Replication protein A 32 kDa subunit
Homo sapiens
State in the Current Structure
| Assembly | Oligomeric State | Construct | Mutations and Modifications | Ligands, Ions and Associated Components | Method and Experimental Conditions | Structure Quality |
|---|---|---|---|---|---|---|
| 1 | Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count | Chain A; UniProt 172–270 | Fragment:RPA32 C-terminal domain | Large T antigen × 1 (P03070) | SOLUTION NMR NMR measurement conditions:pH 7;298 K;Ionic strength (raw mmCIF value) 0.03 M;Pressure ambient NMR sample composition:0.2mM RPA32C U-15N, 0.6mM Tag-OBD, 20mM Tris buffer pH 7.0, 2 mM DTT, 5mM MgCl2, 90% H2O, 10% D2O | 90% H2O/10% D2O NMR sample composition:0.2mM Tag-OBD U-15N, 0.6mM RPA32C, 20mM Tris buffer pH 7.0, 2mM DTT, 5mM MgCl2, 90% H2O, 10% D2O | 90% H2O/10% D2O | Resolution not provided |
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 1Z1D | Assembly / Oligomeric State | Construct | Mutations and Modifications | Ligands, Ions and Non-polymers | Method and Experimental Conditions | Structure Quality |
|---|---|---|---|---|---|---|---|
| 1DPU SOLUTION STRUCTURE OF THE C-TERMINAL DOMAIN OF HUMAN RPA32 COMPLEXED WITH UNG2(73-88) Deposited 1999-12-27 | Different construct Different experimental conditions | Assembly 1 Protein heterocomplex Heteromer;Protein × 2 PDB declaration: dimeric |
Chain A
202–270(69 aa)
Fragment:C-TERMINAL DOMAIN (RESIDUES 172-270)
|
Not recorded | No recorded non-water small molecule |
SOLUTION NMR
NMR measurement conditions
pH 7;298 K;Ionic strength (raw mmCIF value) 25mM PHOSPHATE, 50mM NACL;Pressure AMBIENT
NMR sample composition
1MM RPA32(172-270) U- 15N,13C; 1.2 MM UNG2(73- 88) NA; 25MM PHOSPHATE BUFFER NA; 50MM NACL; 5 MM DTT NA
|
Resolution not provided |
| 1L1O Structure of the human Replication Protein A (RPA) trimerization core Deposited 2002-02-19 | 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 × 6 PDB declaration: hexameric |
Chain B
44–171(128 aa)
Fragment:RPA32 central domain (residues 44-171)
Chain E
44–171(128 aa)
Fragment:RPA32 central domain (residues 44-171)
|
Not recorded | ZN ZINC ION × 2 |
X-RAY DIFFRACTION
X-ray crystallization conditions
VAPOR DIFFUSION, SITTING DROP;pH 7.8;300 K;0.1 M Hepes, 9% glycerol, and 1.6 M ammonium sulfate, pH 7.8, VAPOR DIFFUSION, SITTING DROP, temperature 300K
|
Resolution 2.80 Å R-free 0.282 |
| 1QUQ COMPLEX OF REPLICATION PROTEIN A SUBUNITS RPA14 AND RPA32 Deposited 1999-07-02 | Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein heterocomplex Heteromer;Protein × 4 PDB declaration: tetrameric |
Chain A
43–171(129 aa)
Fragment:CENTRAL DOMAIN, RESIDUES 43-171
Chain C
43–171(129 aa)
Fragment:CENTRAL DOMAIN, RESIDUES 43-171
|
Not recorded | No recorded non-water small molecule |
X-RAY DIFFRACTION
X-ray crystallization conditions
pH 6.5;0.1 M MES, 0.75 M AMMONIUM SULPHATE, 20% PEG 8K, 10 MM DTT., pH 6.50
|
Resolution 2.50 Å R-free 0.291 |
| 1QUQ COMPLEX OF REPLICATION PROTEIN A SUBUNITS RPA14 AND RPA32 Deposited 1999-07-02 | Different construct Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 2 Protein heterocomplex Heteromer;Protein × 2 PDB declaration: dimeric |
Chain C
43–171(129 aa)
Fragment:CENTRAL DOMAIN, RESIDUES 43-171
|
Not recorded | No recorded non-water small molecule |
X-RAY DIFFRACTION
X-ray crystallization conditions
pH 6.5;0.1 M MES, 0.75 M AMMONIUM SULPHATE, 20% PEG 8K, 10 MM DTT., pH 6.50
|
Resolution 2.50 Å R-free 0.291 |
| 1QUQ COMPLEX OF REPLICATION PROTEIN A SUBUNITS RPA14 AND RPA32 Deposited 1999-07-02 | Different construct Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 3 Protein heterocomplex Heteromer;Protein × 2 PDB declaration: dimeric |
Chain A
43–171(129 aa)
Fragment:CENTRAL DOMAIN, RESIDUES 43-171
|
Not recorded | No recorded non-water small molecule |
X-RAY DIFFRACTION
X-ray crystallization conditions
pH 6.5;0.1 M MES, 0.75 M AMMONIUM SULPHATE, 20% PEG 8K, 10 MM DTT., pH 6.50
|
Resolution 2.50 Å R-free 0.291 |
| 2PI2 Full-length Replication protein A subunits RPA14 and RPA32 Deposited 2007-04-12 | Different construct 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
1–270(270 aa)
|
Not recorded | DIO 1,4-DIETHYLENE DIOXIDE × 1 |
X-RAY DIFFRACTION
X-ray crystallization conditions
VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;10% dioxane, 0.1 M MES pH 6.5, 39% saturated ammonium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 293K
|
Resolution 2.00 Å R-free 0.255 |
| 2PI2 Full-length Replication protein A subunits RPA14 and RPA32 Deposited 2007-04-12 | Different construct 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
1–270(270 aa)
|
Not recorded | DIO 1,4-DIETHYLENE DIOXIDE × 1 |
X-RAY DIFFRACTION
X-ray crystallization conditions
VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;10% dioxane, 0.1 M MES pH 6.5, 39% saturated ammonium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 293K
|
Resolution 2.00 Å R-free 0.255 |
| 2PI2 Full-length Replication protein A subunits RPA14 and RPA32 Deposited 2007-04-12 | Different construct Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 3 Protein heterocomplex Heteromer;Protein × 2 PDB declaration: dimeric |
Chain C
1–270(270 aa)
|
Not recorded | DIO 1,4-DIETHYLENE DIOXIDE × 1 |
X-RAY DIFFRACTION
X-ray crystallization conditions
VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;10% dioxane, 0.1 M MES pH 6.5, 39% saturated ammonium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 293K
|
Resolution 2.00 Å R-free 0.255 |
| 2PI2 Full-length Replication protein A subunits RPA14 and RPA32 Deposited 2007-04-12 | Different construct Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 4 Protein heterocomplex Heteromer;Protein × 2 PDB declaration: dimeric |
Chain D
1–270(270 aa)
|
Not recorded | DIO 1,4-DIETHYLENE DIOXIDE × 1 |
X-RAY DIFFRACTION
X-ray crystallization conditions
VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;10% dioxane, 0.1 M MES pH 6.5, 39% saturated ammonium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 293K
|
Resolution 2.00 Å R-free 0.255 |
| 2PQA Crystal Structure of Full-length Human RPA 14/32 Heterodimer Deposited 2007-05-01 | Different construct Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein heterocomplex Heteromer;Protein × 2 PDB declaration: dimeric |
Chain A
42–172(131 aa)
Fragment:UNP residues 42-172
|
Not recorded | No recorded non-water small molecule |
X-RAY DIFFRACTION
X-ray crystallization conditions
VAPOR DIFFUSION, HANGING DROP;pH 9;293 K;0.1 M Bicine pH 9, 20% saturated ammonium sulfate, 10% acetonitrile, VAPOR DIFFUSION, HANGING DROP, temperature 293K, pH 9.0
|
Resolution 2.50 Å R-free 0.280 |
| 2PQA Crystal Structure of Full-length Human RPA 14/32 Heterodimer Deposited 2007-05-01 | Different construct Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 2 Protein heterocomplex Heteromer;Protein × 2 PDB declaration: dimeric |
Chain C
42–172(131 aa)
Fragment:UNP residues 42-172
|
Not recorded | No recorded non-water small molecule |
X-RAY DIFFRACTION
X-ray crystallization conditions
VAPOR DIFFUSION, HANGING DROP;pH 9;293 K;0.1 M Bicine pH 9, 20% saturated ammonium sulfate, 10% acetonitrile, VAPOR DIFFUSION, HANGING DROP, temperature 293K, pH 9.0
|
Resolution 2.50 Å R-free 0.280 |
| 2Z6K Crystal structure of full-length human RPA14/32 heterodimer Deposited 2007-08-03 | Different construct Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein heterocomplex Heteromer;Protein × 2 PDB declaration: dimeric |
Chain A
1–270(270 aa)
Fragment:residues 42-175
|
Not recorded | No recorded non-water small molecule |
X-RAY DIFFRACTION
X-ray crystallization conditions
EVAPORATION;pH 5.9;293 K;0.95M KNa tartrate, 0.1M MES, 10mM DTT, pH 5.9, EVAPORATION, temperature 293K
|
Resolution 3.00 Å R-free 0.269 |
| 2Z6K Crystal structure of full-length human RPA14/32 heterodimer Deposited 2007-08-03 | Different construct Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 2 Protein heterocomplex Heteromer;Protein × 2 PDB declaration: dimeric |
Chain B
1–270(270 aa)
Fragment:residues 42-175
|
Not recorded | No recorded non-water small molecule |
X-RAY DIFFRACTION
X-ray crystallization conditions
EVAPORATION;pH 5.9;293 K;0.95M KNa tartrate, 0.1M MES, 10mM DTT, pH 5.9, EVAPORATION, temperature 293K
|
Resolution 3.00 Å R-free 0.269 |
| 3KDF X-ray Crystal Structure of the Human Replication Protein A Complex from Wheat Germ Cell Free Expression Deposited 2009-10-22 | 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 × 4 PDB declaration: tetrameric |
Chain B
41–172(132 aa)
Fragment:Residues 41-172
Chain D
41–172(132 aa)
Fragment:Residues 41-172
|
Mutation:A41S Non-standard monomer:Yes (specific site not provided by mmCIF) Mutation:A41S Non-standard monomer:Yes (specific site not provided by mmCIF) | EDO 1,2-ETHANEDIOL × 7 |
X-RAY DIFFRACTION
X-ray crystallization conditions
VAPOR DIFFUSION, SITTING DROP;pH 7;293 K;11% PEG 8000, 50 mM BisTris-propane pH 7.0, 50 mM NaCl, 5 mM HEPES pH 7.0, 0.3 mM TCEP, VAPOR DIFFUSION, SITTING DROP, temperature 293K
|
Resolution 1.98 Å R-free 0.206 |
| 3KDF X-ray Crystal Structure of the Human Replication Protein A Complex from Wheat Germ Cell Free Expression Deposited 2009-10-22 | Different construct Different mutation/modification 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
41–172(132 aa)
Fragment:Residues 41-172
|
Mutation:A41S Non-standard monomer:Yes (specific site not provided by mmCIF) | EDO 1,2-ETHANEDIOL × 2 |
X-RAY DIFFRACTION
X-ray crystallization conditions
VAPOR DIFFUSION, SITTING DROP;pH 7;293 K;11% PEG 8000, 50 mM BisTris-propane pH 7.0, 50 mM NaCl, 5 mM HEPES pH 7.0, 0.3 mM TCEP, VAPOR DIFFUSION, SITTING DROP, temperature 293K
|
Resolution 1.98 Å R-free 0.206 |
| 3KDF X-ray Crystal Structure of the Human Replication Protein A Complex from Wheat Germ Cell Free Expression Deposited 2009-10-22 | Different construct Different mutation/modification Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 3 Protein heterocomplex Heteromer;Protein × 2 PDB declaration: dimeric |
Chain D
41–172(132 aa)
Fragment:Residues 41-172
|
Mutation:A41S Non-standard monomer:Yes (specific site not provided by mmCIF) | EDO 1,2-ETHANEDIOL × 5 |
X-RAY DIFFRACTION
X-ray crystallization conditions
VAPOR DIFFUSION, SITTING DROP;pH 7;293 K;11% PEG 8000, 50 mM BisTris-propane pH 7.0, 50 mM NaCl, 5 mM HEPES pH 7.0, 0.3 mM TCEP, VAPOR DIFFUSION, SITTING DROP, temperature 293K
|
Resolution 1.98 Å R-free 0.206 |
| 4MQV Crystal complex of Rpa32c and Smarcal1 N-terminus Deposited 2013-09-16 | Different construct Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein heterocomplex Heteromer;Protein × 2 PDB declaration: dimeric |
Chain A
202–270(69 aa)
Fragment:C-Terminal domain, UNP residues 202-270
|
Not recorded | No recorded non-water small molecule |
X-RAY DIFFRACTION
X-ray crystallization conditions
VAPOR DIFFUSION;pH 8;298 K;25% PEG 4000, 0.2M Sodium Acetate, pH 8.0, VAPOR DIFFUSION, temperature 298K
|
Resolution 1.95 Å R-free 0.220 |
| 4MQV Crystal complex of Rpa32c and Smarcal1 N-terminus Deposited 2013-09-16 | Different construct Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 2 Protein heterocomplex Heteromer;Protein × 2 PDB declaration: dimeric |
Chain C
202–270(69 aa)
Fragment:C-Terminal domain, UNP residues 202-270
|
Not recorded | No recorded non-water small molecule |
X-RAY DIFFRACTION
X-ray crystallization conditions
VAPOR DIFFUSION;pH 8;298 K;25% PEG 4000, 0.2M Sodium Acetate, pH 8.0, VAPOR DIFFUSION, temperature 298K
|
Resolution 1.95 Å R-free 0.220 |
| 4OU0 Crystal Structure of RPA32C Deposited 2014-02-14 | 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
202–270(69 aa)
Fragment:UNP RESIDUES 202-270
|
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 4.5;294 K;50 mM Sodium Acetate, 20% PEG 3350, pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 294K
|
Resolution 1.40 Å R-free 0.238 |
| 8RK2 Human Replication protein A (RPA; trimeric core) - ssDNA complex Deposited 2023-12-22 | Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein heterocomplex Heteromer;Protein × 3 PDB declaration: trimeric |
Chain B
1–270(270 aa)
|
Not recorded | No recorded non-water small molecule |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.20 Å |
| 9MJ5 Catalytic domain of human DNA polymerase alpha in complex with DNA and RPA Deposited 2024-12-13 | Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein–DNA Heteromer;Protein × 4 PDB declaration: hexameric |
Chain B
35–270(236 aa)
|
Not recorded | ZN ZINC ION × 1 MG MAGNESIUM ION × 1 DCP 2'-DEOXYCYTIDINE-5'-TRIPHOSPHATE × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 7.7
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.50 Å |
| 9PD3 NER dual incision complex - DuIS Deposited 2025-06-30 | Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein–DNA Heteromer;Protein × 15 PDB declaration: 17-meric |
Chain O
1–270(270 aa)
|
Not recorded | SF4 IRON/SULFUR CLUSTER × 1 ZN ZINC ION × 7 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.30 Å |
| 9PD4 NER dual incision complex - DuIM Deposited 2025-06-30 | Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein–DNA Heteromer;Protein × 14 PDB declaration: hexadecameric |
Chain O
1–270(270 aa)
|
Not recorded | SF4 IRON/SULFUR CLUSTER × 1 ZN ZINC ION × 7 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.40 Å |
13 other PDB entries and 23 assemblies. Open the comparison page and filter oligomeric states
View Construct and Data Evidence
| UniProt name | RFA2_HUMAN |
| Isoform | — |
| PDB entities | 1 |
| Chains and sequence ranges | Author chain A; PDBConstruct 5–103; UniProt 172–270 |