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8ttb

Cryo-EM structure of the PP2A:B55-ARPP19 complex

Method: ELECTRON MICROSCOPY Dmax: 116.4 Å Quality: GOOD
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1. Protein Identity and Related Structures Protein Identity & Related Structures

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

Homo sapiens

UniProt P30153

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 Not recorded 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） cAMP-regulated phosphoprotein 19 × 1 （P56211） 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

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 8TTB 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 ligand/ion 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 ligand/ion 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 ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain A 9–46（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 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 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 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 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 Different structure-quality metrics 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 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 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 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
8TWE Cryo-EM structure of the PP2A:B55-FAM122A complex, B55 body Deposited 2023-08-21 Different ligand/ion 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 oligomeric state 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 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 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 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 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 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 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） 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 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） 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 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） 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 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） 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
9N0Z PP2A-B55 Holoenzyme with B55i Deposited 2025-01-24 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） 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 3.50 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） cAMP-regulated phosphoprotein 19 × 1 （P56211） 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

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 8TTB 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 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
8TWE Cryo-EM structure of the PP2A:B55-FAM122A complex, B55 body Deposited 2023-08-21 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 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 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 experimental conditions 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 experimental conditions 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 ligand/ion Different experimental conditions 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 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 No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.71 Å
9N0Z PP2A-B55 Holoenzyme with B55i Deposited 2025-01-24 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 No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 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 5–450； 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 Non-standard monomer：Yes (specific site not provided by mmCIF) 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） cAMP-regulated phosphoprotein 19 × 1 （P56211） 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

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 8TTB 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 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） 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 mutation/modification 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 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 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 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 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 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 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 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 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 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 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 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 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 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）
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 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）
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 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）
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 mutation/modification 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 mutation/modification 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 mutation/modification 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 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 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 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 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 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 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 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 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 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 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 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）
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 mutation/modification 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 mutation/modification 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 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）
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 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 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 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 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 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 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 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 mutation/modification 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 3.50 Å
7K36 Cryo-EM structure of STRIPAK complex Deposited 2020-09-10 Different mutation/modification 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 mutation/modification 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 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）
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 mutation/modification 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 mutation/modification 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 mutation/modification 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 mutation/modification 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 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
8TWE Cryo-EM structure of the PP2A:B55-FAM122A complex, B55 body Deposited 2023-08-21 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) 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 oligomeric state 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 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）
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 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）
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 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）
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 mutation/modification 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 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) 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 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) 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 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）
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 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）
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 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）
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 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）
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 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）
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 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）
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
9N0Z PP2A-B55 Holoenzyme with B55i Deposited 2025-01-24 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）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 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 Different structure-quality metrics 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 mutation/modification 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

cAMP-regulated phosphoprotein 19

Homo sapiens

UniProt P56211

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 D； UniProt 1–112 Non-standard monomer：Yes (specific site not provided by mmCIF) 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） Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform × 1 （P67775） 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

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.

No other PDB entry for the same UniProt protein was found.

View Construct and Data Evidence
UniProt name ARP19_HUMAN
Isoform —
PDB entities 4
Chains and sequence ranges Author chain D； PDBConstruct 3–114； UniProt 1–112

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

SAXS profile for 8ttb

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8ttb
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8ttb
Deposition date deposition_date2023-08-13
Structure title titleCryo-EM structure of the PP2A:B55-ARPP19 complex
Keywords keywordsProtein Phosphatase 2A:B55 holoenzyme, ARPP19 inhibitor, cell cycle regulation, SIGNALING PROTEIN, HYDROLASE; SIGNALING PROTEIN,HYDROLASE
Experimental Method methodELECTRON MICROSCOPY
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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier37.26 Å
Radius of gyration Rg (electron density) rg_electron36.60 Å
Forward intensity I(0) i0373650000.00
Molecular weight molecular_weight156660.0 kDa
Excluded volume excluded_volume195880 ų
Envelope volume envelope_volume251320 ų
Hydration-shell volume shell_volume55656 ų
Envelope diameter envelope_diameter128.8 Å
Shell Rg shell_rg44.27 Å
Envelope Rg envelope_rg35.93 Å
Shape Rg shape_rg36.58 Å
Total Rg total_rg37.14 Å
Total atoms total_atoms21924
Residues n_residues1374
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 Å−1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3
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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax116.4 Å
Rg (real space) rg_real37.04 Å
Rg uncertainty (real space) rg_real_error0.72 Å
I(0) (real space) i0_real3.7360e+08
I(0) uncertainty (real space) i0_real_error5.9860e+06
Rg (reciprocal space) rg_reciprocal37.18 Å
I(0) (reciprocal space) i0_reciprocal373700000.0000
Solution quality estimate total_estimate0.8980
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary52.6 Å
Skewness Skewness skewness0.065
Kurtosis Kurtosis kurtosis-0.572
Angular range angular_range— – 0.2100 Å−1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha67970000.0000
Real-space data points n_real_points43
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.919; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.986; Smooth: 0.927
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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (6)

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8. Citations (1)

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9. Files and Curves (10)