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Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases: SPOPBTB/3-box

Method: X-RAY DIFFRACTION D_max: 131.5 Å Quality: GOOD

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

Speckle-type POZ protein

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric（2） Consistent with protein copy count	Chain A； UniProt 172–329 Chain B； UniProt 172–329	Fragment：UNP residues 172-329 Non-standard monomer：Yes (specific site not provided by mmCIF)	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 2.50 Å R-free 0.256
2	Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric（2） Consistent with protein copy count	Chain C； UniProt 172–329 Chain D； UniProt 172–329	Fragment：UNP residues 172-329 Non-standard monomer：Yes (specific site not provided by mmCIF)	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 2.50 Å R-free 0.256

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 3HTM	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
2CR2 Solution structure of N-terminal domain of speckle-type POZ protein Deposited 2005-05-20	Different construct Different mutation/modification 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 28–173（146 aa） Fragment：math domain	Not recorded	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 7；298 K；Ionic strength (raw mmCIF value) 120mM；Pressure ambient NMR sample composition 1.25mM math domain U-13C,15N; 20mM TrisHCl, 100mM NaCl, 1mM DTT, 0.02% NaN3 \| 90% H2O/10% D2O	Resolution not provided
3HQI Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases: SPOPMATHx/BTB/3-box-PucSBC1 Deposited 2009-06-07	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 28–329（302 aa） Fragment：UNP residues 28-329 Chain B 28–329（302 aa） Fragment：UNP residues 28-329	Mutation：D140G Mutation：D140G	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；pH 5.5, VAPOR DIFFUSION, HANGING DROP	Resolution 2.62 Å R-free 0.275
3HQL Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases:SPOPMATHx-PucSBC1_pep2 Deposited 2009-06-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 28–166（139 aa） Fragment：UNP residues 28-166	Mutation：D140G	SO4 SULFATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 1.66 Å R-free 0.258
3HQL Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases:SPOPMATHx-PucSBC1_pep2 Deposited 2009-06-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 28–166（139 aa） Fragment：UNP residues 28-166	Mutation：D140G	SO4 SULFATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 1.66 Å R-free 0.258
3HQM Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases: SPOPMATHx-CiSBC2 Deposited 2009-06-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 28–166（139 aa） Fragment：UNP residues 28-166	Mutation：D140G	SO4 SULFATE ION × 2	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.74 Å R-free 0.218
3HQM Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases: SPOPMATHx-CiSBC2 Deposited 2009-06-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 28–166（139 aa） Fragment：UNP residues 28-166	Mutation：D140G	SO4 SULFATE ION × 2	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.74 Å R-free 0.218
3HSV Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases: SPOPMATHx-MacroH2ASBCpep2 Deposited 2009-06-10	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 A 28–166（139 aa） Chain B 28–166（139 aa）	Mutation：D140G Mutation：D140G	ZN ZINC ION × 3 SO4 SULFATE ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.43 Å R-free 0.206
3HU6 Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases: SPOPMATHx/BTB/3-box-PucSBC1 Deposited 2009-06-13	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 28–329（302 aa） Fragment：UNP residues 28-329 Chain B 28–329（302 aa） Fragment：UNP residues 28-329	Mutation：D140G Mutation：D140G	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.70 Å R-free 0.296
3IVB Structures of SPOP-Substrate Complexes: Insights into Architectures of BTB-Cul3 Ubiquitin Ligases: SPOPMATH-MacroH2ASBCpep1 Deposited 2009-08-31	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 28–166（139 aa） Fragment：UNP residues 28-166	Not recorded	ZN ZINC ION × 5 CL CHLORIDE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.6；298 K；10-20% PEG3350, 0.1 M Tris pH 7.6, 50 mM zinc acetate. Cryoprotection 30% PEG400, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.75 Å R-free 0.247
3IVQ Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases: SPOPMATH-CiSBC2 Deposited 2009-09-01	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 28–166（139 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.6；298 K；28% PME 550, 0.1 M BTP, Cryoprotection: 35% PME 550, pH 6.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.10 Å R-free 0.279
3IVQ Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases: SPOPMATH-CiSBC2 Deposited 2009-09-01	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 28–166（139 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.6；298 K；28% PME 550, 0.1 M BTP, Cryoprotection: 35% PME 550, pH 6.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.10 Å R-free 0.279
3IVV Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases: SPOPMATH-PucSBC1_pep1 Deposited 2009-09-01	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 28–166（139 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；22% PME 550, 0.1 M HEPES, Cryoprotection: 30% glycerol, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.25 Å R-free 0.199
4EOZ Crystal structure of the SPOP BTB domain complexed with the Cul3 N-terminal domain Deposited 2012-04-16	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 177–319（143 aa） Fragment：BTB domain from SPOP, unp residues 177-319 Chain C 177–319（143 aa） Fragment：BTB domain from SPOP, unp residues 177-319	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；298 K；0.025M Hepes pH 6.5, 0.1M MgCl2, 13% PEG 2000, 11% 2,4-Methyl-2-Pentanediol, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.40 Å R-free 0.263
4EOZ Crystal structure of the SPOP BTB domain complexed with the Cul3 N-terminal domain Deposited 2012-04-16	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 177–319（143 aa） Fragment：BTB domain from SPOP, unp residues 177-319	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；298 K；0.025M Hepes pH 6.5, 0.1M MgCl2, 13% PEG 2000, 11% 2,4-Methyl-2-Pentanediol, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.40 Å R-free 0.263
4EOZ Crystal structure of the SPOP BTB domain complexed with the Cul3 N-terminal domain Deposited 2012-04-16	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 177–319（143 aa） Fragment：BTB domain from SPOP, unp residues 177-319	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；298 K；0.025M Hepes pH 6.5, 0.1M MgCl2, 13% PEG 2000, 11% 2,4-Methyl-2-Pentanediol, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.40 Å R-free 0.263
4HS2 Crystal Structure of the Human SPOP C-terminal Domain Deposited 2012-10-29	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 270–374（105 aa） Fragment：C-terminal domain (UNP residues 270-374)	Mutation：L273D, L282D, L285K	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；291 K；26% PEG 1500, 7% isopropanol, 0.1M CaCl2, 0.1M imidazole pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 1.53 Å R-free 0.151
4J8Z Crystal Structure of the Human SPOP BTB Domain Deposited 2013-02-15	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 169–374（206 aa） Fragment：SPOP BTB domain, UNP residues 178-374	Mutation：Y353E	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；291 K；32% PEG3350, 17% isopropanol, 0.1M tris-HCl, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K	Resolution 2.42 Å R-free 0.255
4J8Z Crystal Structure of the Human SPOP BTB Domain Deposited 2013-02-15	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain B 169–374（206 aa） Fragment：SPOP BTB domain, UNP residues 178-374	Mutation：Y353E	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；291 K；32% PEG3350, 17% isopropanol, 0.1M tris-HCl, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K	Resolution 2.42 Å R-free 0.255
4O1V SPOP Promotes Tumorigenesis by Acting as a Key Regulatory Hub in Kidney Cancer Deposited 2013-12-16	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 28–166（139 aa） Fragment：MATH domain (UNP residues 28-166)	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；298 K；100 mM Tris, 100 mM sodium malonate, 36% PEG400, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.00 Å R-free 0.221
6F8F Co-crystal structure of SPOP MATH domain and human Pdx1 fragment Deposited 2017-12-13	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain D 28–166（139 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；277 K；0.1 M HEPES pH 6.5, 10% (w/v) PEG6000 (final pH 7.0)	Resolution 2.00 Å R-free 0.274
6F8G Co-crystal structure of SPOP MATH domain and hamster Pdx1 fragment Deposited 2017-12-13	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 28–166（139 aa） Chain B 28–166（139 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；295 K；0.1 M Imidazole-HCl pH 8.0, 30% (w/v) MPD, 10% (w/v) PEG-4000	Resolution 2.03 Å R-free 0.262
6F8G Co-crystal structure of SPOP MATH domain and hamster Pdx1 fragment Deposited 2017-12-13	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 28–166（139 aa） Chain D 28–166（139 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；295 K；0.1 M Imidazole-HCl pH 8.0, 30% (w/v) MPD, 10% (w/v) PEG-4000	Resolution 2.03 Å R-free 0.262
6F8G Co-crystal structure of SPOP MATH domain and hamster Pdx1 fragment Deposited 2017-12-13	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 28–166（139 aa） Chain D 28–166（139 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；295 K；0.1 M Imidazole-HCl pH 8.0, 30% (w/v) MPD, 10% (w/v) PEG-4000	Resolution 2.03 Å R-free 0.262
6I41 Co-crystal structure of human SPOP MATH domain (wild-type) and human BRD3 fragment Deposited 2018-11-08	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 28–166（139 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；294 K；100 mM Tris pH 8.5, 200 mM NaCl, 25% (w/v) PEG3350	Resolution 1.90 Å R-free 0.238
6I5P Co-crystal structure of human SPOP MATH domain (E47K) and human BRD3 fragment Deposited 2018-11-14	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 28–166（139 aa）	Mutation：E47K	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；294 K；200mM Ammonium Acetate, 100mM Tris pH 8.5, 25% (w/v) PEG 3350	Resolution 1.81 Å R-free 0.227
6I5P Co-crystal structure of human SPOP MATH domain (E47K) and human BRD3 fragment Deposited 2018-11-14	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 28–166（139 aa）	Mutation：E47K	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；294 K；200mM Ammonium Acetate, 100mM Tris pH 8.5, 25% (w/v) PEG 3350	Resolution 1.81 Å R-free 0.227
6I5P Co-crystal structure of human SPOP MATH domain (E47K) and human BRD3 fragment Deposited 2018-11-14	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 28–166（139 aa）	Mutation：E47K	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；294 K；200mM Ammonium Acetate, 100mM Tris pH 8.5, 25% (w/v) PEG 3350	Resolution 1.81 Å R-free 0.227
6I5P Co-crystal structure of human SPOP MATH domain (E47K) and human BRD3 fragment Deposited 2018-11-14	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 4 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain G 28–166（139 aa）	Mutation：E47K	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；294 K；200mM Ammonium Acetate, 100mM Tris pH 8.5, 25% (w/v) PEG 3350	Resolution 1.81 Å R-free 0.227
6I68 Co-crystal structure of human SPOP MATH domain (M117V) and human BRD3 fragment Deposited 2018-11-15	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 28–166（139 aa）	Mutation：M117V	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；294 K；200 mM Sodium formate, 100 mM Bis Tris propane pH 7.5, 20% (w/v) PEG 3350	Resolution 1.85 Å R-free 0.237
6I68 Co-crystal structure of human SPOP MATH domain (M117V) and human BRD3 fragment Deposited 2018-11-15	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 28–166（139 aa）	Mutation：M117V	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；294 K；200 mM Sodium formate, 100 mM Bis Tris propane pH 7.5, 20% (w/v) PEG 3350	Resolution 1.85 Å R-free 0.237
6I68 Co-crystal structure of human SPOP MATH domain (M117V) and human BRD3 fragment Deposited 2018-11-15	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 28–166（139 aa）	Mutation：M117V	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；294 K；200 mM Sodium formate, 100 mM Bis Tris propane pH 7.5, 20% (w/v) PEG 3350	Resolution 1.85 Å R-free 0.237
6I68 Co-crystal structure of human SPOP MATH domain (M117V) and human BRD3 fragment Deposited 2018-11-15	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 4 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain G 28–166（139 aa）	Mutation：M117V	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；294 K；200 mM Sodium formate, 100 mM Bis Tris propane pH 7.5, 20% (w/v) PEG 3350	Resolution 1.85 Å R-free 0.237
6I7A Co-crystal structure of human SPOP MATH domain (D140N) and human BRD3 fragment Deposited 2018-11-16	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 28–166（139 aa） Chain E 28–166（139 aa）	Mutation：D140N Mutation：D140N	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；294 K；200 mM Sodium chloride, 100 mM HEPES pH 7.0, 20% (w/v) PEG 6000	Resolution 2.20 Å R-free 0.234
6I7A Co-crystal structure of human SPOP MATH domain (D140N) and human BRD3 fragment Deposited 2018-11-16	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain C 28–166（139 aa） Chain G 28–166（139 aa）	Mutation：D140N Mutation：D140N	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；294 K；200 mM Sodium chloride, 100 mM HEPES pH 7.0, 20% (w/v) PEG 6000	Resolution 2.20 Å R-free 0.234
7D3D Crystal structure of SPOP bound with a peptide Deposited 2020-09-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 28–166（139 aa） Fragment：UNP residues 28-166	Not recorded	GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289 K；200 mM sodium acetate trihydrate, pH 7.0, 20%(w/v) polyethylene glycol 3350	Resolution 1.45 Å R-free 0.189
7D3D Crystal structure of SPOP bound with a peptide Deposited 2020-09-18	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 28–166（139 aa） Fragment：UNP residues 28-166	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289 K；200 mM sodium acetate trihydrate, pH 7.0, 20%(w/v) polyethylene glycol 3350	Resolution 1.45 Å R-free 0.189
7KLZ Structure of SPOP MATH domain in complex with a Geminin peptide Deposited 2020-11-01	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 29–166（138 aa） Fragment：MATH domain	Mutation：D140G	PO4 PHOSPHATE ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；295 K；One microliter of the protein complex in 20 mM Tris-HCl, pH 7.6, 50 mM NaCl and 5 mM dithiothreitol was mixed with on microliter of 0.2 M ammonium citrate dibasic and 20% (W/V) PEG 3350	Resolution 3.40 Å R-free 0.241
7KLZ Structure of SPOP MATH domain in complex with a Geminin peptide Deposited 2020-11-01	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 29–166（138 aa） Fragment：MATH domain	Mutation：D140G	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；295 K；One microliter of the protein complex in 20 mM Tris-HCl, pH 7.6, 50 mM NaCl and 5 mM dithiothreitol was mixed with on microliter of 0.2 M ammonium citrate dibasic and 20% (W/V) PEG 3350	Resolution 3.40 Å R-free 0.241
7LIN X-ray structure of SPOP MATH domain (D140G) in complex with a 53BP1 peptide Deposited 2021-01-27	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 29–166（138 aa） Fragment：MATH domain	Mutation：D140G	SO4 SULFATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；SPOP MATH was at 24 mg/ml and 1:5 protein:53BP1 peptide molar ratio. Crystals were grown by the hanging drop method, mixing 2 ul of the protein sample in 20 mM Tris-HCl, pH 7.6, 150 mM NaCl, 5 mM DTT and 2 ul of the reservoir solution for the drop. The reservoir solution was 0.5 ml. Reservoir solution: 0.1 M sodium citrate tribasic dihydrate, pH 5.6, 0.2 M (NH4)2SO4, 1 M Li2SO4	Resolution 1.44 Å R-free 0.186
7LIO X-ray structure of SPOP MATH domain (S119D) in complex with a 53BP1 peptide Deposited 2021-01-27	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 29–166（138 aa） Fragment：MATH domain	Mutation：S119D	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；SPOP MATH (S119D) was at a concentration of 20 mg/ml with a 1:5 protein:53BP1 peptide molar ratio. Crystals were grown by the hanging drop method, mixing 2 ul of the protein sample in 20 mM Tris-HCl, pH 7.6, 150 mM NaCl, 5 mM DTT and 2 ul of the reservoir solution for the drop. The reservoir solution was 0.5 ml of 2 M (NH4)2SO4.	Resolution 3.01 Å R-free 0.277
7LIO X-ray structure of SPOP MATH domain (S119D) in complex with a 53BP1 peptide Deposited 2021-01-27	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 29–166（138 aa） Fragment：MATH domain	Mutation：S119D	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；SPOP MATH (S119D) was at a concentration of 20 mg/ml with a 1:5 protein:53BP1 peptide molar ratio. Crystals were grown by the hanging drop method, mixing 2 ul of the protein sample in 20 mM Tris-HCl, pH 7.6, 150 mM NaCl, 5 mM DTT and 2 ul of the reservoir solution for the drop. The reservoir solution was 0.5 ml of 2 M (NH4)2SO4.	Resolution 3.01 Å R-free 0.277
7LIP X-ray structure of SPOP MATH domain (D140G) Deposited 2021-01-27	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 29–166（138 aa） Fragment：MATH domain	Mutation：D140G	SO4 SULFATE ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；Reservoir solution: 0.1 M sodium citrate tribasic dihydrate, pH 5.6, 0.2 M (NH4)2SO4, 1 M Li2SO4. Two ul of the protein at 24 mg/ml in 20 mM Tris-HCl, pH 7.6, 150 mM NaCl, 5 mM DTT was mixed with 2 ul of the reservoir solution. The reservoir solution was 0.5 ml.	Resolution 1.48 Å R-free 0.205
7LIQ X-ray structure of SPOP MATH domain (S119A) Deposited 2021-01-27	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 29–166（138 aa） Fragment：MATH domain	Mutation：S119A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；Crystals were grown by the hanging drop method, mixing 2 ul of the SPOP MATH S119A at 20 mg/ml in 20 mM Tris-HCl, pH 7.6, 150 mM NaCl, 5 mM DTT and 2 ul of the reservoir solution for the drop. The reservoir solution was 0.2 M (NH4)2SO4, 0.1 M BIS-Tris, pH 6.5, 25% (w/v) PEG 3,350).	Resolution 1.98 Å R-free 0.225
8DWS Full-length E47K SPOP Deposited 2022-08-02	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 7 PDB declaration: heptameric	Chain A 1–374（374 aa） Chain B 1–374（374 aa） Chain D 1–374（374 aa） Chain E 1–374（374 aa） Chain F 1–374（374 aa） Chain G 1–374（374 aa） Chain H 1–374（374 aa）	Mutation：E47K Mutation：E47K Mutation：E47K Mutation：E47K Mutation：E47K Mutation：E47K Mutation：E47K	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5；20 mM HEPES pH 7.5, 400 mM NaCl, 5 mM DTT cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.73 Å
8DWT SPOP W22R Form 2 Deposited 2022-08-02	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 12 PDB declaration: dodecameric	Chain A 2–374（373 aa） Chain B 2–374（373 aa） Chain C 2–374（373 aa） Chain D 2–374（373 aa） Chain E 2–374（373 aa） Chain F 2–374（373 aa） Chain G 2–374（373 aa） Chain H 2–374（373 aa） Chain I 2–374（373 aa） Chain J 2–374（373 aa） Chain K 2–374（373 aa） Chain L 2–374（373 aa）	Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5；20 mM HEPES pH 7.5, 400 mM NaCl, 5 mM DTT cryo-EM vitrification conditions Cryogen ETHANE	Resolution 6.20 Å
8DWU SPOP W22R Form 1 Deposited 2022-08-02	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 9 PDB declaration: nonameric	Chain A 1–374（374 aa） Chain B 1–374（374 aa） Chain C 1–374（374 aa） Chain D 1–374（374 aa） Chain E 1–374（374 aa） Chain F 1–374（374 aa） Chain H 1–374（374 aa） Chain I 1–374（374 aa） Chain J 1–374（374 aa）	Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R Mutation：W22R	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5；20 mM HEPES pH 7.5, 400 mM NaCl, 5 mM DTT cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.40 Å
8DWV Full-length wild type SPOP Deposited 2022-08-02	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric	Chain A 1–373（373 aa） Chain B 1–373（373 aa） Chain E 1–373（373 aa） Chain F 1–373（373 aa） Chain G 1–373（373 aa） Chain H 1–373（373 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5；20 mM HEPES pH 7.5, 400 mM NaCl, 5 mM DTT cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.60 Å
9HFV MyD88 peptide_2 bound to SPOP MATH domain Deposited 2024-11-18	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 28–166（139 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291 K；10% w/v PEG 20,000, 20% v/v PEG MME 550, 0.03 M magnesium chloride, 0.03 M calcium chloride, 0.1 M MOPS/HEPES-Na pH 7.5	Resolution 1.45 Å R-free 0.214
9HGG SETD2 peptide bound to SPOP MATH domain Deposited 2024-11-19	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 28–166（139 aa）	Not recorded	MG MAGNESIUM ION × 5	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291 K；10% w/v PEG 20 000, 20% v/v PEG MME 550, 0.03 M sodium fluoride, 0.03 M sodium bromide, 0.1 M MES/imidazole pH 6.5	Resolution 1.90 Å R-free 0.256
9OUT SPOP double donut locally refined MATH domains Deposited 2025-05-29	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 15 PDB declaration: pentadecameric	Chain A 1–374（374 aa） Chain B 1–374（374 aa） Chain C 1–374（374 aa） Chain D 1–374（374 aa） Chain E 1–374（374 aa） Chain F 1–374（374 aa） Chain G 1–374（374 aa） Chain H 1–374（374 aa） Chain I 1–374（374 aa） Chain J 1–374（374 aa） Chain K 1–374（374 aa） Chain L 1–374（374 aa） Chain M 1–374（374 aa） Chain N 1–374（374 aa） Chain P 1–374（374 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
9OUU SPOP double donut locally refined MATH domains Deposited 2025-05-29	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 15 PDB declaration: pentadecameric	Chain A 1–373（373 aa） Chain B 1–373（373 aa） Chain C 1–373（373 aa） Chain D 1–373（373 aa） Chain E 1–373（373 aa） Chain F 1–373（373 aa） Chain G 1–373（373 aa） Chain H 1–373（373 aa） Chain I 1–373（373 aa） Chain J 1–373（373 aa） Chain K 1–373（373 aa） Chain L 1–373（373 aa） Chain M 1–373（373 aa） Chain N 1–373（373 aa） Chain P 1–373（373 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
9OUW SPOP double donut locally refined MATH domains Deposited 2025-05-29	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 8 PDB declaration: octameric	Chain A 1–373（373 aa） Chain B 1–373（373 aa） Chain D 1–373（373 aa） Chain F 1–373（373 aa） Chain H 1–373（373 aa） Chain I 1–373（373 aa） Chain J 1–373（373 aa） Chain L 1–373（373 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.20 Å

34 other PDB entries and 52 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	SPOP_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 7–164； UniProt 172–329 Author chain B； PDBConstruct 7–164； UniProt 172–329 Author chain C； PDBConstruct 7–164； UniProt 172–329 Author chain D； PDBConstruct 7–164； UniProt 172–329

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

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	3htm
Deposition date deposition_date	2009-06-11
Structure title title	Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases: SPOPBTB/3-box
Keywords keywords	BTB, SPOP, ubiquitin, ligase, Nucleus, Ubl conjugation pathway, PROTEIN BINDING; PROTEIN BINDING, ligase
Experimental Method method	X-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier	39.81 Å
Radius of gyration Rg (electron density) rg_electron	40.06 Å
Forward intensity I(0) i0	81319800.00
Molecular weight molecular_weight	69409.0 kDa
Excluded volume excluded_volume	84946 Å³
Envelope volume envelope_volume	131570 Å³
Hydration-shell volume shell_volume	28921 Å³
Envelope diameter envelope_diameter	137.6 Å
Shell Rg shell_rg	43.49 Å
Envelope Rg envelope_rg	38.87 Å
Shape Rg shape_rg	40.09 Å
Total Rg total_rg	40.16 Å
Total atoms total_atoms	4756
Residues n_residues	584
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

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

Maximum dimension Dmax dmax	131.5 Å
Rg (real space) rg_real	40.27 Å
Rg uncertainty (real space) rg_real_error	1.50 Å
I(0) (real space) i0_real	8.1320e+07
I(0) uncertainty (real space) i0_real_error	1.6780e+06
Rg (reciprocal space) rg_reciprocal	40.00 Å
I(0) (reciprocal space) i0_reciprocal	81300000.0000
Solution quality estimate total_estimate	0.7700
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	3
Primary peak position r_peak_primary	26.3 Å
Skewness Skewness skewness	0.320
Kurtosis Kurtosis kurtosis	-0.910
Angular range angular_range	— – 0.2000 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	3987000.0000
Real-space data points n_real_points	41
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.635; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.433; Smooth: 0.668

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (2)

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7. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

Domain ID domain_id	3htmA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	710 — Potassium Channel Kv1.1; Chain A
Homologous superfamily homologous superfamily	10 — Potassium Channel Kv1.1; Chain A

Domain ID domain_id	3htmA02
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	250 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	3030 —

Domain ID domain_id	3htmB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	710 — Potassium Channel Kv1.1; Chain A
Homologous superfamily homologous superfamily	10 — Potassium Channel Kv1.1; Chain A

Domain ID domain_id	3htmB02
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	250 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	3030 —

Domain ID domain_id	3htmC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	710 — Potassium Channel Kv1.1; Chain A
Homologous superfamily homologous superfamily	10 — Potassium Channel Kv1.1; Chain A

Domain ID domain_id	3htmC02
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	250 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	3030 —

Domain ID domain_id	3htmD01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	710 — Potassium Channel Kv1.1; Chain A
Homologous superfamily homologous superfamily	10 — Potassium Channel Kv1.1; Chain A

Domain ID domain_id	3htmD02
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	250 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	3030 —

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8. Citations (1)

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Unit-cell length a length_a	36.800 Å
Unit-cell length b length_b	88.700 Å
Unit-cell length c length_c	88.700 Å
Unit-cell angle α angle_alpha	90.80 °
Unit-cell angle β angle_beta	89.30 °
Unit-cell angle γ angle_gamma	89.90 °
Molecules per unit cell Z z_pdb	4

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

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	44.340 Å
R factor r_factor	0.2170
R_work r_work	0.2170
R_free r_free	0.2560

Description description	Speckle-type POZ protein
Molecular weight formula_weight	19295.6 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	5092

Structures of SPOP-Substrate Complexes: Insights into Molecular Architectures of BTB-Cul3 Ubiquitin Ligases: SPOPBTB/3-box

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

Speckle-type POZ protein

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

6. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

Entity 2 Entity 2 water

7. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)

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	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	336

fit	/app/data/saxs_computation/ht/3htm/3htm.fit
pddf	/app/data/pr_computation/ht/3htm/3htm.pr.out
profile	/app/data/saxs_computation/ht/3htm/3htm.dat