9n0z

PP2A-B55 Holoenzyme with B55i

Method: ELECTRON MICROSCOPY D_max: 121.6 Å Quality: REASONABLE

▼

1. Protein Identity and Related Structures Protein Identity & Related Structures

Serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform

Homo sapiens

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric（4） Consistent with protein copy count	Chain A； UniProt 9–589	Fragment：residues 9-589	Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform × 1 （P63151） Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform × 1 （P67775） B55i inhibitor peptide × 1	ELECTRON MICROSCOPY cryo-EM buffer：pH 8 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 3.50 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 9N0Z	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1B3U CRYSTAL STRUCTURE OF CONSTANT REGULATORY DOMAIN OF HUMAN PP2A, PR65ALPHA Deposited 1998-12-14	Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–588（588 aa） Fragment：65 KD REGULATORY SUBUNIT	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 5.5；pH 5.5	Resolution 2.30 Å R-free 0.268
1B3U CRYSTAL STRUCTURE OF CONSTANT REGULATORY DOMAIN OF HUMAN PP2A, PR65ALPHA Deposited 1998-12-14	Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain not uniquely mapped Reference range not declared Fragment：65 KD REGULATORY SUBUNIT	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 5.5；pH 5.5	Resolution 2.30 Å R-free 0.268
2PKG Structure of a complex between the A subunit of protein phosphatase 2A and the small t antigen of SV40 Deposited 2007-04-17	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 10–589（580 aa）	Not recorded	ZN ZINC ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；290 K；0.2 M MgCl2, 4.5% PEG10000 (w/v), 0.1 M HEPES pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 3.30 Å R-free 0.312
2PKG Structure of a complex between the A subunit of protein phosphatase 2A and the small t antigen of SV40 Deposited 2007-04-17	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 10–589（580 aa）	Not recorded	ZN ZINC ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；290 K；0.2 M MgCl2, 4.5% PEG10000 (w/v), 0.1 M HEPES pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 3.30 Å R-free 0.312
3C5W Complex between PP2A-specific methylesterase PME-1 and PP2A core enzyme Deposited 2008-02-01	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 9–46（38 aa） Chain A 400–589（190 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；290 K；25% w/v PEG3350, 100 mM ammonium citrate, and 5 mM DTT, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 2.80 Å R-free 0.263
3DW8 Structure of a Protein Phosphatase 2A Holoenzyme with B55 subunit Deposited 2008-07-21	Different construct Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 9–589（581 aa） Fragment：A delta 8: Residues 9-589	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；290 K；7-10% PEG 35000, 0.10-0.15 M Sodium citrate pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 2.85 Å R-free 0.285
3DW8 Structure of a Protein Phosphatase 2A Holoenzyme with B55 subunit Deposited 2008-07-21	Different construct Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain D 9–589（581 aa） Fragment：A delta 8: Residues 9-589	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；290 K；7-10% PEG 35000, 0.10-0.15 M Sodium citrate pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 2.85 Å R-free 0.285
3K7V Protein phosphatase 2A core complex bound to dinophysistoxin-1 Deposited 2009-10-13	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–589（589 aa）	Not recorded	SO4 SULFATE ION × 3 XT1 (2R)-3-[(2S,5R,6R,8S)-8-{(1R,2E)-3-[(2R,4a'R,5R,6'S,8'R,8a'S)-6'-{(1S,3S)-3-[(2S,3R,6R,11R)-3,11-dimethyl-1,7-dioxaspiro[5.5]undec-2-yl]-1-hydroxybutyl}-8'-hydroxy-7'-methylideneoctahydro-3H,3'H-spiro[furan-2,2'-pyrano[3,2-b]pyran]-5-yl]-1-methylprop-2-en-1-yl}-5-hydroxy-10-methyl-1,7-dioxaspiro[5.5]undec-10-en-2-yl]-2-hydroxy-2-methylpropanoic acid × 1 MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；0.2 M LITHIUM SULFATE, 1.5 M AMMONIUM SULFATE, 0.1 M TRIS-CL, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.85 Å R-free 0.262
3K7W Protein phosphatase 2A core complex bound to dinophysistoxin-2 Deposited 2009-10-13	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–589（589 aa）	Not recorded	SO4 SULFATE ION × 3 XT2 (2R)-2-hydroxy-3-[(2S,5R,6R,8S)-5-hydroxy-8-{(1R,2E)-3-[(2R,4a'R,5R,6'S,8'R,8a'S)-8'-hydroxy-6'-{(1S,3S)-1-hydroxy-3-[( 2S,6R,11S)-11-methyl-1,7-dioxaspiro[5.5]undec-2-yl]butyl}-7'-methylideneoctahydro-3H,3'H-spiro[furan-2,2'-pyrano[3,2-b]p yran]-5-yl]-1-methylprop-2-en-1-yl}-10-methyl-1,7-dioxaspiro[5.5]undec-10-en-2-yl]-2-methylpropanoic acid × 1 MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；0.2 M LITHIUM SULFATE, 1.5 M AMMONIUM SULFATE, 0.1 M TRIS-CL, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.96 Å R-free 0.263
4I5L Structural mechanism of trimeric PP2A holoenzyme involving PR70: insight for Cdc6 dephosphorylation Deposited 2012-11-28	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 9–589（581 aa） Fragment：PP2A A alpha subunit (9-589)	Not recorded	PEG DI(HYDROXYETHYL)ETHER × 8 CA CALCIUM ION × 2 MN MANGANESE (II) ION × 2 MLI MALONATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5；292 K；0.1M Na Malonate, 12% PEG 3350 + 6.2mg/mL protein in buffer Tris, 150mM NaCl , pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 292K	Resolution 2.43 Å R-free 0.228
4I5L Structural mechanism of trimeric PP2A holoenzyme involving PR70: insight for Cdc6 dephosphorylation Deposited 2012-11-28	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric	Chain D 9–589（581 aa） Fragment：PP2A A alpha subunit (9-589)	Not recorded	PEG DI(HYDROXYETHYL)ETHER × 3 CA CALCIUM ION × 2 MN MANGANESE (II) ION × 2 MLI MALONATE ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5；292 K；0.1M Na Malonate, 12% PEG 3350 + 6.2mg/mL protein in buffer Tris, 150mM NaCl , pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 292K	Resolution 2.43 Å R-free 0.228
4I5N Structural mechanism of trimeric PP2A holoenzyme involving PR70: insight for Cdc6 dephosphorylation Deposited 2012-11-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 9–589（581 aa） Fragment：PP2A A alpha subunit (9-589)	Non-standard monomer：Yes (specific site not provided by mmCIF)	CA CALCIUM ION × 2 MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.75；296 K；0.03M Succinic acid with 7% PEG 3350. Protein (6.2mg/mL) in 10mM tris pH 8.0, 150mM NaCl, 5mM DTT, 1mM CaCl2, VAPOR DIFFUSION, HANGING DROP, temperature 296K	Resolution 2.80 Å R-free 0.250
4I5N Structural mechanism of trimeric PP2A holoenzyme involving PR70: insight for Cdc6 dephosphorylation Deposited 2012-11-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric	Chain D 9–589（581 aa） Fragment：PP2A A alpha subunit (9-589)	Non-standard monomer：Yes (specific site not provided by mmCIF)	CA CALCIUM ION × 2 MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.75；296 K；0.03M Succinic acid with 7% PEG 3350. Protein (6.2mg/mL) in 10mM tris pH 8.0, 150mM NaCl, 5mM DTT, 1mM CaCl2, VAPOR DIFFUSION, HANGING DROP, temperature 296K	Resolution 2.80 Å R-free 0.250
5W0W Crystal structure of Protein Phosphatase 2A bound to TIPRL Deposited 2017-06-01	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 9–589（581 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	MN MANGANESE (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.2；292 K；0.1M citric acid pH 5.2, 9% PEG4000, 0.2M sodium acetate	Resolution 3.80 Å R-free 0.246
5W0W Crystal structure of Protein Phosphatase 2A bound to TIPRL Deposited 2017-06-01	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain D 9–589（581 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	MN MANGANESE (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.2；292 K；0.1M citric acid pH 5.2, 9% PEG4000, 0.2M sodium acetate	Resolution 3.80 Å R-free 0.246
5W0W Crystal structure of Protein Phosphatase 2A bound to TIPRL Deposited 2017-06-01	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain G 9–589（581 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	MN MANGANESE (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.2；292 K；0.1M citric acid pH 5.2, 9% PEG4000, 0.2M sodium acetate	Resolution 3.80 Å R-free 0.246
5W0W Crystal structure of Protein Phosphatase 2A bound to TIPRL Deposited 2017-06-01	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 4 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain J 9–589（581 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	MN MANGANESE (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.2；292 K；0.1M citric acid pH 5.2, 9% PEG4000, 0.2M sodium acetate	Resolution 3.80 Å R-free 0.246
6IUR A phosphatase complex STRN3-PP2Aa Deposited 2018-11-30	Different construct Different mutation/modification Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 8–589（582 aa） Fragment：UNP residues 8-589 Chain B 8–589（582 aa） Fragment：UNP residues 8-589	Not recorded	TME PROPANE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289 K；0.1M BIS-TRIS propane pH 9.0, 8.5% PEG20000	Resolution 3.33 Å R-free 0.249
6IUR A phosphatase complex STRN3-PP2Aa Deposited 2018-11-30	Different construct Different mutation/modification Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain E 8–589（582 aa） Fragment：UNP residues 8-589 Chain F 8–589（582 aa） Fragment：UNP residues 8-589	Not recorded	TME PROPANE × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289 K；0.1M BIS-TRIS propane pH 9.0, 8.5% PEG20000	Resolution 3.33 Å R-free 0.249
6NTS Protein Phosphatase 2A (Aalpha-B56alpha-Calpha) holoenzyme in complex with a Small Molecule Activator of PP2A (SMAP) Deposited 2019-01-30	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–589（589 aa）	Not recorded	L2J N-[(1R,2R,3S)-2-hydroxy-3-(10H-phenoxazin-10-yl)cyclohexyl]-4-(trifluoromethoxy)benzene-1-sulfonamide × 1 MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.02 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.63 Å
7CUN The structure of human Integrator-PP2A complex Deposited 2020-08-23	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain P 1–589（589 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	ZN ZINC ION × 2 MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.50 Å
7K36 Cryo-EM structure of STRIPAK complex Deposited 2020-09-10	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric	Chain A 1–589（589 aa）	Not recorded	MN MANGANESE (II) ION × 2 ZN ZINC ION × 2 IHP INOSITOL HEXAKISPHOSPHATE × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å
7PKS Structural basis of Integrator-mediated transcription regulation Deposited 2021-08-26	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 30 PDB declaration: 31-meric	Chain p 1–589（589 aa）	Not recorded	MG MAGNESIUM ION × 1 ZN ZINC ION × 10 MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.60 Å
7SOY The structure of the PP2A-B56gamma1 holoenzyme-PME-1 complex Deposited 2021-11-01	Different construct Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–589（589 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.40 Å
7YCX The structure of INTAC-PEC complex Deposited 2022-07-02	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 31 PDB declaration: 34-meric	Chain P 1–589（589 aa）	Not recorded	ZN ZINC ION × 10 MN MANGANESE (II) ION × 2 MG MAGNESIUM ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.18 Å
8RBX Structure of Integrator-PP2A bound to a paused RNA polymerase II-DSIF-NELF-nucleosome complex Deposited 2023-12-05	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 43 PDB declaration: 46-meric	Chain p 1–589（589 aa）	Not recorded	ZN ZINC ION × 10 MG MAGNESIUM ION × 1 MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.10 Å
8RBZ Structure of Integrator-PP2A-SOSS-CTD post-termination complex Deposited 2023-12-05	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric	Chain p 1–589（589 aa）	Not recorded	ZN ZINC ION × 2 MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.70 Å
8RC4 Structure of Integrator-PP2A complex Deposited 2023-12-06	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: 16-meric	Chain p 1–589（589 aa）	Not recorded	MN MANGANESE (II) ION × 2 ZN ZINC ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.10 Å
8SO0 Cryo-EM structure of the PP2A:B55-FAM122A complex Deposited 2023-04-28	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 9–589（581 aa）	Not recorded	FE FE (III) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8；CHAPSO was added only immediately prior to vitrification cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
8TTB Cryo-EM structure of the PP2A:B55-ARPP19 complex Deposited 2023-08-13	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 9–589（581 aa）	Not recorded	FE FE (III) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8；CHAPSO was added only immediately prior to vitrification cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.77 Å
8TWE Cryo-EM structure of the PP2A:B55-FAM122A complex, B55 body Deposited 2023-08-21	Different construct Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 9–589（581 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8；CHAPSO was added only immediately prior to vitrification cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.55 Å
8TWI Cryo-EM structure of the PP2A:B55-FAM122A complex, PP2Ac body Deposited 2023-08-21	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 9–589（581 aa）	Not recorded	FE FE (III) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8；CHAPSO was added only immediately prior to vitrification cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.69 Å
8U1X The structure of the PP2A-B56Delta holoenzyme mutant - E197K Deposited 2023-09-04	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–589（589 aa）	Not recorded	MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.70 Å
8U89 The structure of the PP2A-B56Delta holoenzyme mutant - E197K Deposited 2023-09-16	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–589（589 aa）	Not recorded	MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å
8UO5 Protein Phosphatase 2A B55 subunit in complex with IER5 Deposited 2023-10-19	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–589（589 aa）	Not recorded	FE FE (III) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.6 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.27 Å
8UWB Crystal structure of PP2A PPP2R1A-PPP2CA-PPP2R5E phosphatase. Deposited 2023-11-06	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–589（589 aa） Chain D 1–589（589 aa）	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.77；297 K；23% (w/v) PEG 20k, 0.1 M BIS-TRIS pH 5.77	Resolution 3.15 Å R-free 0.263
8UWB Crystal structure of PP2A PPP2R1A-PPP2CA-PPP2R5E phosphatase. Deposited 2023-11-06	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–589（589 aa） Chain D 1–589（589 aa）	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.77；297 K；23% (w/v) PEG 20k, 0.1 M BIS-TRIS pH 5.77	Resolution 3.15 Å R-free 0.263
8YJB Cryo-EM structure of the human DSS1-INTAC complex Deposited 2024-03-01	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain P 1–589（589 aa）	Not recorded	ZN ZINC ION × 2 MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.10 Å
9C6B PP2A:B55-p107 substrate complex Deposited 2024-06-07	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 9–589（581 aa） Fragment：residues 9-589	Not recorded	FE2 FE (II) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.60 Å
9C7T PP2A:B55-Eya3 substrate complex Deposited 2024-06-11	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 9–589（581 aa） Fragment：residues 9-589	Not recorded	FE2 FE (II) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.70 Å
9MIP CryoEM structure of the Protein Phasphatase 2A (Aalpha-B56gamma-Calpha) holoenzyme complex Deposited 2024-12-13	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–589（589 aa）	Not recorded	MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.40 Å
9MZW PP2A-B55 holoenzyme Deposited 2025-01-23	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 9–589（581 aa） Fragment：residues 9-589	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.16 Å
9N0Y PP2A-B55 Holoenzyme with Eya3 Deposited 2025-01-24	Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 9–589（581 aa） Fragment：residues 9-589	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.71 Å
9VD9 Cryo-EM structure of the human DSS1-INTAC-PEC complex Deposited 2025-06-07	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 35 PDB declaration: 38-meric	Chain P 1–589（589 aa）	Not recorded	ZN ZINC ION × 10 MN MANGANESE (II) ION × 2 MG MAGNESIUM ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.60 Å

34 other PDB entries and 44 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	2AAA_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–584； UniProt 9–589

Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform

Homo sapiens

UniProt P63151

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric（4） Consistent with protein copy count	Chain B； UniProt 2–447	Not recorded	Serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform × 1 （P30153） Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform × 1 （P67775） B55i inhibitor peptide × 1	ELECTRON MICROSCOPY cryo-EM buffer：pH 8 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 3.50 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 9N0Z	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
3DW8 Structure of a Protein Phosphatase 2A Holoenzyme with B55 subunit Deposited 2008-07-21	Different construct Different mutation/modification Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 1–447（447 aa）	Mutation：I310V	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；290 K；7-10% PEG 35000, 0.10-0.15 M Sodium citrate pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 2.85 Å R-free 0.285
3DW8 Structure of a Protein Phosphatase 2A Holoenzyme with B55 subunit Deposited 2008-07-21	Different construct Different mutation/modification Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain E 1–447（447 aa）	Mutation：I310V	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；290 K；7-10% PEG 35000, 0.10-0.15 M Sodium citrate pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 2.85 Å R-free 0.285
8SO0 Cryo-EM structure of the PP2A:B55-FAM122A complex Deposited 2023-04-28	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 2–447（446 aa）	Not recorded	FE FE (III) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8；CHAPSO was added only immediately prior to vitrification cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
8TTB Cryo-EM structure of the PP2A:B55-ARPP19 complex Deposited 2023-08-13	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 2–447（446 aa）	Not recorded	FE FE (III) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8；CHAPSO was added only immediately prior to vitrification cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.77 Å
8TWE Cryo-EM structure of the PP2A:B55-FAM122A complex, B55 body Deposited 2023-08-21	Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 2–447（446 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8；CHAPSO was added only immediately prior to vitrification cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.55 Å
8UO5 Protein Phosphatase 2A B55 subunit in complex with IER5 Deposited 2023-10-19	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 1–447（447 aa）	Not recorded	FE FE (III) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.6 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.27 Å
9C6B PP2A:B55-p107 substrate complex Deposited 2024-06-07	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 2–447（446 aa）	Not recorded	FE2 FE (II) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.60 Å
9C7T PP2A:B55-Eya3 substrate complex Deposited 2024-06-11	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 2–447（446 aa）	Not recorded	FE2 FE (II) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.70 Å
9MZW PP2A-B55 holoenzyme Deposited 2025-01-23	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain B 2–447（446 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.16 Å
9N0Y PP2A-B55 Holoenzyme with Eya3 Deposited 2025-01-24	Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 2–447（446 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.71 Å

9 other PDB entries and 10 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	2ABA_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 6–451； UniProt 2–447

Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform

Homo sapiens

UniProt P67775

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric（4） Consistent with protein copy count	Chain C； UniProt 1–309	Not recorded	Serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform × 1 （P30153） Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform × 1 （P63151） B55i inhibitor peptide × 1	ELECTRON MICROSCOPY cryo-EM buffer：pH 8 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 3.50 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 9N0Z	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
2IAE Crystal structure of a protein phosphatase 2A (PP2A) holoenzyme. Deposited 2006-09-07	Different construct Different mutation/modification Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa） Fragment：Calpha subunit	Mutation：D88N Non-standard monomer：Yes (specific site not provided by mmCIF)	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；298 K；0.1M MES, pH 7.0, 50mM NaCl, 1.4M ammonium sulfate, 0.2M LiCl, 2% 1,6-diaminohexane, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 3.50 Å R-free 0.316
2IAE Crystal structure of a protein phosphatase 2A (PP2A) holoenzyme. Deposited 2006-09-07	Different construct Different mutation/modification Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 1–309（309 aa） Fragment：Calpha subunit	Mutation：D88N Non-standard monomer：Yes (specific site not provided by mmCIF)	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；298 K；0.1M MES, pH 7.0, 50mM NaCl, 1.4M ammonium sulfate, 0.2M LiCl, 2% 1,6-diaminohexane, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 3.50 Å R-free 0.316
2IE3 Structure of the Protein Phosphatase 2A Core Enzyme Bound to Tumor-inducing Toxins Deposited 2006-09-17	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa） Fragment：catalytic subunit	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；0.2 mM lithium sulfate, 1.5 M ammonium sulfate, 0.1 M Tris-Cl pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.80 Å R-free 0.264
2IE4 Structure of the Protein Phosphatase 2A Core Enzyme Bound to okadaic acid Deposited 2006-09-17	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 1–309（309 aa） Fragment：catalytic subunit	Not recorded	MN MANGANESE (II) ION × 2 OKA OKADAIC ACID × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；0.2 mM lithium sulfate, 1.5 M ammonium sulfate, 0.1 M Tris-Cl pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.60 Å R-free 0.230
2NPP Structure of the Protein Phosphatase 2A Holoenzyme Deposited 2006-10-28	Different construct Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 1–309（309 aa） Fragment：catalytic subunit	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；277.5 K；15% PEG 8000, 0.1 M Tris-Cl pH 8.5, and 0.2 M magnesium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 277.5K	Resolution 3.30 Å R-free 0.299
2NPP Structure of the Protein Phosphatase 2A Holoenzyme Deposited 2006-10-28	Different construct Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa） Fragment：catalytic subunit	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；277.5 K；15% PEG 8000, 0.1 M Tris-Cl pH 8.5, and 0.2 M magnesium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 277.5K	Resolution 3.30 Å R-free 0.299
2NYL Crystal structure of Protein Phosphatase 2A (PP2A) holoenzyme with the catalytic subunit carboxyl terminus truncated Deposited 2006-11-20	Different construct Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 2–294（293 aa）	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；277 K；10-15% PEG8000, 0.1 M Tris-Cl, 0.2 M magnesium sulfate, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K	Resolution 3.80 Å R-free 0.335
2NYL Crystal structure of Protein Phosphatase 2A (PP2A) holoenzyme with the catalytic subunit carboxyl terminus truncated Deposited 2006-11-20	Different construct Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 2–294（293 aa）	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；277 K；10-15% PEG8000, 0.1 M Tris-Cl, 0.2 M magnesium sulfate, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K	Resolution 3.80 Å R-free 0.335
2NYM Crystal Structure of Protein Phosphatase 2A (PP2A) with C-terminus truncated catalytic subunit Deposited 2006-11-21	Different construct Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 2–294（293 aa）	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；277 K；10-15% PEG8000, 0.1 M Tris-Cl, 0.2 M magnesium sulfate, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K	Resolution 3.60 Å R-free 0.331
2NYM Crystal Structure of Protein Phosphatase 2A (PP2A) with C-terminus truncated catalytic subunit Deposited 2006-11-21	Different construct Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 2–294（293 aa）	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；277 K；10-15% PEG8000, 0.1 M Tris-Cl, 0.2 M magnesium sulfate, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K	Resolution 3.60 Å R-free 0.331
3C5W Complex between PP2A-specific methylesterase PME-1 and PP2A core enzyme Deposited 2008-02-01	Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；290 K；25% w/v PEG3350, 100 mM ammonium citrate, and 5 mM DTT, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 2.80 Å R-free 0.263
3DW8 Structure of a Protein Phosphatase 2A Holoenzyme with B55 subunit Deposited 2008-07-21	Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；290 K；7-10% PEG 35000, 0.10-0.15 M Sodium citrate pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 2.85 Å R-free 0.285
3DW8 Structure of a Protein Phosphatase 2A Holoenzyme with B55 subunit Deposited 2008-07-21	Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；290 K；7-10% PEG 35000, 0.10-0.15 M Sodium citrate pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 2.85 Å R-free 0.285
3FGA Structural Basis of PP2A and Sgo interaction Deposited 2008-12-05	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain C 1–309（309 aa）	Mutation：D88N	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions EVAPORATION；pH 7；295 K；0.2 M SCTD, 20% w/v Polyethylene glycol 3,350, pH 7, EVAPORATION, temperature 295K	Resolution 2.70 Å R-free 0.277
3K7V Protein phosphatase 2A core complex bound to dinophysistoxin-1 Deposited 2009-10-13	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 1–309（309 aa）	Not recorded	SO4 SULFATE ION × 3 XT1 (2R)-3-[(2S,5R,6R,8S)-8-{(1R,2E)-3-[(2R,4a'R,5R,6'S,8'R,8a'S)-6'-{(1S,3S)-3-[(2S,3R,6R,11R)-3,11-dimethyl-1,7-dioxaspiro[5.5]undec-2-yl]-1-hydroxybutyl}-8'-hydroxy-7'-methylideneoctahydro-3H,3'H-spiro[furan-2,2'-pyrano[3,2-b]pyran]-5-yl]-1-methylprop-2-en-1-yl}-5-hydroxy-10-methyl-1,7-dioxaspiro[5.5]undec-10-en-2-yl]-2-hydroxy-2-methylpropanoic acid × 1 MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；0.2 M LITHIUM SULFATE, 1.5 M AMMONIUM SULFATE, 0.1 M TRIS-CL, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.85 Å R-free 0.262
3K7W Protein phosphatase 2A core complex bound to dinophysistoxin-2 Deposited 2009-10-13	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 1–309（309 aa）	Not recorded	SO4 SULFATE ION × 3 XT2 (2R)-2-hydroxy-3-[(2S,5R,6R,8S)-5-hydroxy-8-{(1R,2E)-3-[(2R,4a'R,5R,6'S,8'R,8a'S)-8'-hydroxy-6'-{(1S,3S)-1-hydroxy-3-[( 2S,6R,11S)-11-methyl-1,7-dioxaspiro[5.5]undec-2-yl]butyl}-7'-methylideneoctahydro-3H,3'H-spiro[furan-2,2'-pyrano[3,2-b]p yran]-5-yl]-1-methylprop-2-en-1-yl}-10-methyl-1,7-dioxaspiro[5.5]undec-10-en-2-yl]-2-methylpropanoic acid × 1 MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；0.2 M LITHIUM SULFATE, 1.5 M AMMONIUM SULFATE, 0.1 M TRIS-CL, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.96 Å R-free 0.263
3P71 Crystal structure of the complex of LCMT-1 and PP2A Deposited 2010-10-11	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 1–309（309 aa） Fragment：CATALYTIC SUBUNIT ALPHA ISOFORM	Not recorded	PEG DI(HYDROXYETHYL)ETHER × 1 AN6 5'-{[(3S)-3-amino-3-carboxypropyl](ethyl)amino}-5'-deoxyadenosine × 1 MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.2；291 K；PROTEIN COMPLEX (~5 MG/ML), 100MM TRIS-HCL, 22-26% V/V PEG 4000, 200 MM SODIUM ACETATE, 5 MM DTT, pH 8.2, VAPOR DIFFUSION, SITTING DROP, temperature 291K	Resolution 2.70 Å R-free 0.249
4I5L Structural mechanism of trimeric PP2A holoenzyme involving PR70: insight for Cdc6 dephosphorylation Deposited 2012-11-28	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa）	Not recorded	PEG DI(HYDROXYETHYL)ETHER × 8 CA CALCIUM ION × 2 MN MANGANESE (II) ION × 2 MLI MALONATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5；292 K；0.1M Na Malonate, 12% PEG 3350 + 6.2mg/mL protein in buffer Tris, 150mM NaCl , pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 292K	Resolution 2.43 Å R-free 0.228
4I5L Structural mechanism of trimeric PP2A holoenzyme involving PR70: insight for Cdc6 dephosphorylation Deposited 2012-11-28	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 1–309（309 aa）	Not recorded	PEG DI(HYDROXYETHYL)ETHER × 3 CA CALCIUM ION × 2 MN MANGANESE (II) ION × 2 MLI MALONATE ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5；292 K；0.1M Na Malonate, 12% PEG 3350 + 6.2mg/mL protein in buffer Tris, 150mM NaCl , pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 292K	Resolution 2.43 Å R-free 0.228
4I5N Structural mechanism of trimeric PP2A holoenzyme involving PR70: insight for Cdc6 dephosphorylation Deposited 2012-11-28	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa）	Not recorded	CA CALCIUM ION × 2 MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.75；296 K；0.03M Succinic acid with 7% PEG 3350. Protein (6.2mg/mL) in 10mM tris pH 8.0, 150mM NaCl, 5mM DTT, 1mM CaCl2, VAPOR DIFFUSION, HANGING DROP, temperature 296K	Resolution 2.80 Å R-free 0.250
4I5N Structural mechanism of trimeric PP2A holoenzyme involving PR70: insight for Cdc6 dephosphorylation Deposited 2012-11-28	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 1–309（309 aa）	Not recorded	CA CALCIUM ION × 2 MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.75；296 K；0.03M Succinic acid with 7% PEG 3350. Protein (6.2mg/mL) in 10mM tris pH 8.0, 150mM NaCl, 5mM DTT, 1mM CaCl2, VAPOR DIFFUSION, HANGING DROP, temperature 296K	Resolution 2.80 Å R-free 0.250
4IYP structure of the nPP2Ac-alpha4 complex Deposited 2013-01-29	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 6–153（148 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；291 K；12-15% PEG3350 (v/v), 0.3 M Na/K tartrate, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K	Resolution 2.80 Å R-free 0.222
4LAC Crystal Structure of Protein Phosphatase 2A (PP2A) and PP2A phosphatase activator (PTPA) complex with ATPgammaS Deposited 2013-06-19	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa）	Not recorded	PEG DI(HYDROXYETHYL)ETHER × 1 MN MANGANESE (II) ION × 2 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 1 MES 2-(N-MORPHOLINO)-ETHANESULFONIC ACID × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；298 K；0.1M MES at pH6.5 and 10-12% PEG20,000, 1mM ATPgammaS, VAPOR DIFFUSION, SITTING DROP, temperature 298K	Resolution 2.82 Å R-free 0.242
4NY3 Human PTPA in complex with peptide Deposited 2013-12-10	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 304–309（6 aa） Fragment：UNP Residues 304-309	Not recorded	SO4 SULFATE ION × 5 GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；277 K；2 M (NH4)2SO4 and 0.1 M HEPES pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K	Resolution 1.80 Å R-free 0.185
4NY3 Human PTPA in complex with peptide Deposited 2013-12-10	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain D 304–309（6 aa） Fragment：UNP Residues 304-309	Not recorded	SO4 SULFATE ION × 5 GOL GLYCEROL × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；277 K；2 M (NH4)2SO4 and 0.1 M HEPES pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K	Resolution 1.80 Å R-free 0.185
5W0W Crystal structure of Protein Phosphatase 2A bound to TIPRL Deposited 2017-06-01	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.2；292 K；0.1M citric acid pH 5.2, 9% PEG4000, 0.2M sodium acetate	Resolution 3.80 Å R-free 0.246
5W0W Crystal structure of Protein Phosphatase 2A bound to TIPRL Deposited 2017-06-01	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain F 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.2；292 K；0.1M citric acid pH 5.2, 9% PEG4000, 0.2M sodium acetate	Resolution 3.80 Å R-free 0.246
5W0W Crystal structure of Protein Phosphatase 2A bound to TIPRL Deposited 2017-06-01	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain I 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.2；292 K；0.1M citric acid pH 5.2, 9% PEG4000, 0.2M sodium acetate	Resolution 3.80 Å R-free 0.246
5W0W Crystal structure of Protein Phosphatase 2A bound to TIPRL Deposited 2017-06-01	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 4 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain L 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.2；292 K；0.1M citric acid pH 5.2, 9% PEG4000, 0.2M sodium acetate	Resolution 3.80 Å R-free 0.246
6NTS Protein Phosphatase 2A (Aalpha-B56alpha-Calpha) holoenzyme in complex with a Small Molecule Activator of PP2A (SMAP) Deposited 2019-01-30	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–301（301 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	L2J N-[(1R,2R,3S)-2-hydroxy-3-(10H-phenoxazin-10-yl)cyclohexyl]-4-(trifluoromethoxy)benzene-1-sulfonamide × 1 MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.02 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.63 Å
7CUN The structure of human Integrator-PP2A complex Deposited 2020-08-23	Different oligomeric state Different ligand/ion Different experimental conditions	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain Q 1–309（309 aa）	Not recorded	ZN ZINC ION × 2 MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.50 Å
7K36 Cryo-EM structure of STRIPAK complex Deposited 2020-09-10	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric	Chain C 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 2 ZN ZINC ION × 2 IHP INOSITOL HEXAKISPHOSPHATE × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å
7PKS Structural basis of Integrator-mediated transcription regulation Deposited 2021-08-26	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 30 PDB declaration: 31-meric	Chain q 1–309（309 aa）	Not recorded	MG MAGNESIUM ION × 1 ZN ZINC ION × 10 MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.60 Å
7SOY The structure of the PP2A-B56gamma1 holoenzyme-PME-1 complex Deposited 2021-11-01	Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.40 Å
7YCX The structure of INTAC-PEC complex Deposited 2022-07-02	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 31 PDB declaration: 34-meric	Chain Q 1–309（309 aa）	Not recorded	ZN ZINC ION × 10 MN MANGANESE (II) ION × 2 MG MAGNESIUM ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.18 Å
8RBX Structure of Integrator-PP2A bound to a paused RNA polymerase II-DSIF-NELF-nucleosome complex Deposited 2023-12-05	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 43 PDB declaration: 46-meric	Chain q 1–309（309 aa）	Not recorded	ZN ZINC ION × 10 MG MAGNESIUM ION × 1 MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.10 Å
8RBZ Structure of Integrator-PP2A-SOSS-CTD post-termination complex Deposited 2023-12-05	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric	Chain q 1–309（309 aa）	Not recorded	ZN ZINC ION × 2 MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.70 Å
8RC4 Structure of Integrator-PP2A complex Deposited 2023-12-06	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: 16-meric	Chain q 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 2 ZN ZINC ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.10 Å
8SO0 Cryo-EM structure of the PP2A:B55-FAM122A complex Deposited 2023-04-28	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	FE FE (III) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8；CHAPSO was added only immediately prior to vitrification cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
8TTB Cryo-EM structure of the PP2A:B55-ARPP19 complex Deposited 2023-08-13	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	FE FE (III) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8；CHAPSO was added only immediately prior to vitrification cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.77 Å
8TWE Cryo-EM structure of the PP2A:B55-FAM122A complex, B55 body Deposited 2023-08-21	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8；CHAPSO was added only immediately prior to vitrification cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.55 Å
8TWI Cryo-EM structure of the PP2A:B55-FAM122A complex, PP2Ac body Deposited 2023-08-21	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	FE FE (III) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8；CHAPSO was added only immediately prior to vitrification cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.69 Å
8U1X The structure of the PP2A-B56Delta holoenzyme mutant - E197K Deposited 2023-09-04	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.70 Å
8U89 The structure of the PP2A-B56Delta holoenzyme mutant - E197K Deposited 2023-09-16	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å
8UO5 Protein Phosphatase 2A B55 subunit in complex with IER5 Deposited 2023-10-19	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa）	Not recorded	FE FE (III) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.6 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.27 Å
8UWB Crystal structure of PP2A PPP2R1A-PPP2CA-PPP2R5E phosphatase. Deposited 2023-11-06	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa） Chain F 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.77；297 K；23% (w/v) PEG 20k, 0.1 M BIS-TRIS pH 5.77	Resolution 3.15 Å R-free 0.263
8UWB Crystal structure of PP2A PPP2R1A-PPP2CA-PPP2R5E phosphatase. Deposited 2023-11-06	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa） Chain F 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.77；297 K；23% (w/v) PEG 20k, 0.1 M BIS-TRIS pH 5.77	Resolution 3.15 Å R-free 0.263
8YJB Cryo-EM structure of the human DSS1-INTAC complex Deposited 2024-03-01	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain Q 1–309（309 aa）	Not recorded	ZN ZINC ION × 2 MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.10 Å
9C6B PP2A:B55-p107 substrate complex Deposited 2024-06-07	Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	FE2 FE (II) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.60 Å
9C7T PP2A:B55-Eya3 substrate complex Deposited 2024-06-11	Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	FE2 FE (II) ION × 1 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.70 Å
9J5I Pathogen effector forms a phosphatase holoenzyme complex with host core enzyme to promote disease Deposited 2024-08-12	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain C 1–309（309 aa） Chain F 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.38 Å
9J5K Pathogen effector forms a phosphatase holoenzyme complex with host core enzyme to promote disease Deposited 2024-08-12	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain C 1–309（309 aa） Chain F 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.39 Å
9J5N Pathogen effector forms a phosphatase holoenzyme complex with host core enzyme to promote disease Deposited 2024-08-13	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
9J5R Pathogen effector forms a phosphatase holoenzyme complex with host core enzyme to promote disease Deposited 2024-08-13	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
9MF5 CryoEM structure of the Protein Phosphatase 2A (Abeta-B56gamma-Calpha) holoenzyme complex Deposited 2024-12-09	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.20 Å
9MIP CryoEM structure of the Protein Phasphatase 2A (Aalpha-B56gamma-Calpha) holoenzyme complex Deposited 2024-12-13	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.40 Å
9MZW PP2A-B55 holoenzyme Deposited 2025-01-23	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–309（309 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.16 Å
9N0Y PP2A-B55 Holoenzyme with Eya3 Deposited 2025-01-24	Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 1–309（309 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.71 Å
9O04 CryoEM structure of the FBXO42-CCDC6-PP2Ac degradasome Deposited 2025-04-02	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: 14-meric	Chain D 1–309（309 aa） Chain E 1–309（309 aa） Chain I 1–309（309 aa） Chain J 1–309（309 aa） Chain K 1–309（309 aa） Chain L 1–309（309 aa） Chain M 1–309（309 aa） Chain N 1–309（309 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF)	MN MANGANESE (II) ION × 16	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5；20 mM HEPES pH 7.5, 200 mM NaCl, 1 mM TCEP pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.20 Å
9O0L CryoEM structure of the CCDC6-PP2Ac multimer Deposited 2025-04-02	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain D 1–309（309 aa） Chain E 1–309（309 aa） Chain F 1–309（309 aa） Chain G 1–309（309 aa） Chain I 1–309（309 aa） Chain J 1–309（309 aa） Chain K 1–309（309 aa） Chain L 1–309（309 aa）	Not recorded	MN MANGANESE (II) ION × 16	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5；20 mM HEPES pH 7.5, 200 mM NaCl, 1 mM TCEP pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.50 Å
9VD9 Cryo-EM structure of the human DSS1-INTAC-PEC complex Deposited 2025-06-07	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 35 PDB declaration: 38-meric	Chain Q 1–309（309 aa）	Not recorded	ZN ZINC ION × 10 MN MANGANESE (II) ION × 2 MG MAGNESIUM ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.60 Å

49 other PDB entries and 61 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	PP2AA_HUMAN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 3–311； UniProt 1–309

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

Download Download SAXS (.dat) P(r) (.pr.out) CIF

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	9n0z
Deposition date deposition_date	2025-01-24
Structure title title	PP2A-B55 Holoenzyme with B55i
Keywords keywords	Phosphatase, EYA family, Myc stabilization, peptide inhibitor, ONCOPROTEIN, ONCOPROTEIN-INHIBITOR complex; ONCOPROTEIN/INHIBITOR
Experimental Method method	ELECTRON MICROSCOPY

▼

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	38.79 Å
Radius of gyration Rg (electron density) rg_electron	38.11 Å
Forward intensity I(0) i0	360046000.00
Molecular weight molecular_weight	154340.0 kDa
Excluded volume excluded_volume	193230 Å³
Envelope volume envelope_volume	268710 Å³
Hydration-shell volume shell_volume	57356 Å³
Envelope diameter envelope_diameter	132.0 Å
Shell Rg shell_rg	45.42 Å
Envelope Rg envelope_rg	37.40 Å
Shape Rg shape_rg	38.08 Å
Total Rg total_rg	38.67 Å
Total atoms total_atoms	10847
Residues n_residues	1355
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

▼

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	121.6 Å
Rg (real space) rg_real	38.54 Å
Rg uncertainty (real space) rg_real_error	0.85 Å
I(0) (real space) i0_real	3.6000e+08
I(0) uncertainty (real space) i0_real_error	5.6200e+06
Rg (reciprocal space) rg_reciprocal	38.70 Å
I(0) (reciprocal space) i0_reciprocal	360100000.0000
Solution quality estimate total_estimate	0.6977
Solution quality rating solution_quality	REASONABLE a REASONABLE solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	53.4 Å
Skewness Skewness skewness	0.064
Kurtosis Kurtosis kurtosis	-0.576
Angular range angular_range	— – 0.2050 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	64940000.0000
Real-space data points n_real_points	42
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.918; Stabil: 1.000; Sysdev: 0.132; Positv: 1.000; Valcen: 0.991; Smooth: 0.925

▶

5. Crystallography and Experiment 5. Crystallography & Experiment

▶

6. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Description description	Serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform
Molecular weight formula_weight	64958.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	10847

GHMSLYPIAVLIDELRNEDVQLRLNSIKKLSTIALALGVERTRSELLPFLTDTIYDEDEVLLALAEQLGTFTTLVGGPEYVHCLLPPLESLATVEETVVRDKAVESLRAISHEHSPSDLEAHFVPLVKRLAGGDWFTSRTSACGLFSVCYPRVSSAVKAELRQYFRNLCSDDTPMVRRAAASKLGEFAKVLELDNVKSEIIPMFSNLASDEQDSVRLLAVEACVNIAQLLPQEDLEALVMPTLRQAAEDKSWRVRYMVADKFTELQKAVGPEITKTDLVPAFQNLMKDCEAEVRAAASHKVKEFCENLSADCRENVIMSQILPCIKELVSDANQHVKSALASVIMGLSPILGKDNTIEHLLPLFLAQLKDECPEVRLNIISNLDCVNEVIGIRQLSQSLLPAIVELAEDAKWRVRLAIIEYMPLLAGQLGVEFFDEKLNSLCMAWLVDHVYAIREAATSNLKKLVEKFGKEWAHATIIPKVLAMSGDPNYLHRMTTLFCINVLSEVCGQDITTKHMLPTVLRMAGDPVANVRFNVAKSLQKIGPILDNSTLQSEVKPILEKLTQDQDVDVKYFAQEALTVLSLA

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Homo sapiens

Entity 2 Entity 2 polymer

Description description	Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform
Molecular weight formula_weight	52101.3 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

GHMGSAGAGGGNDIQWCFSQVKGAVDDDVAEADIISTVEFNHSGELLATGDKGGRVVIFQQEQENKIQSHSRGEYNVYSTFQSHEPEFDYLKSLEIEEKINKIRWLPQKNAAQFLLSTNDKTIKLWKISERDKRPEGYNLKEEDGRYRDPTTVTTLRVPVFRPMDLMVEASPRRIFANAHTYHINSISINSDYETYLSADDLRINLWHLEITDRSFNIVDIKPANMEELTEVITAAEFHPNSCNTFVYSSSKGTIRLCDMRASALCDRHSKLFEEPEDPSNRSFFSEIISSISDVKFSHSGRYMMTRDYLSVKIWDLNMENRPVETYQVHEYLRSKLCSLYENDCIFDKFECCWNGSDSVVMTGSYNNFFRMFDRNTKRDITLEASRENNKPRTVLKPRKVCASGKRKKDEISVDSLDFNKKILHTAWHPKENIIAVATTNNLYIFQDKVN

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Homo sapiens

Entity 3 Entity 3 polymer

Description description	Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform
Molecular weight formula_weight	35831.3 kDa
EC 编号 ec_number	3.1.3.16
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

GHMDEKVFTKELDQWIEQLNECKQLSESQVKSLCEKAKEILTKESNVQEVRCPVTVCGDVHGQFHDLMELFRIGGKSPDTNYLFMGDYVDRGYYSVETVTLLVALKVRYRERITILRGNHESRQITQVYGFYDECLRKYGNANVWKYFTDLFDYLPLTALVDGQIFCLHGGLSPSIDTLDHIRALDRLQEVPHEGPMCDLLWSDPDDRGGWGISPRGAGYTFGQDISETFNHANGLTLVSRAHQLVMEGYNWCHDRNVVTIFSAPNYCYRCGNQAAIMELDDTLKYSFLQFDPAPRRGEPHVTRRTPDYFL

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Homo sapiens

Entity 4 Entity 4 polymer

Description description	B55i inhibitor peptide
Molecular weight formula_weight	4229.1 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D

LLELAKKKLKELEEEEPDPDLRKKTLVRNMIKKLE

▶

8. Citations (1)

▶

Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	—

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	3.500 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

Resolution resolution	3.50 Å
Resolution测定方法 resolution_method	—
颗粒数 num_particles	171051

fit	/app/data/saxs_computation/n0/9n0z/9n0z.fit
pddf	/app/data/pr_computation/n0/9n0z/9n0z.pr.out
profile	/app/data/saxs_computation/n0/9n0z/9n0z.dat

PP2A-B55 Holoenzyme with B55i

1. Protein Identity and Related Structures Protein Identity & Related Structures

Serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform

State in the Current Structure

Other States of the Same Protein in the Database

Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform

State in the Current Structure

Other States of the Same Protein in the Database

Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

冷冻电镜 EM 3D

6. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

Entity 2 Entity 2 polymer

Polymer Polymer

来源 Source

Entity 3 Entity 3 polymer

Polymer Polymer

来源 Source

Entity 4 Entity 4 polymer

Polymer Polymer

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)