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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：Q01831 New Search
10PDB entries
11Biological assembly
12chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
28JM Cryo-EM structure of the human holo-TFIIH and XPC initial encounter complex Deposited 2026-02-03 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain I 1–940（940 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 1 ZN ZINC ION × 7 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Leica EM GP2
Resolution 3.29 Å
28JS Cryo-EM structure of the human holo-TFIIH-XPC complex bound to bulky lesion-mimic DNA (composite map) Deposited 2026-02-03 Assembly 1 Protein–DNA Heteromer；Protein × 11 PDB declaration: 13-meric（13） Consistent with all polymers
Chain I 1–940（940 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 1 ZN ZINC ION × 5 CA CALCIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Leica EM GP2
Resolution 3.32 Å
28JV Cryo-EM structure of the human holo-TFIIH-XPC complex bound to bulky lesion-mimic DNA (consensus map) Deposited 2026-02-04 Assembly 1 Protein–DNA Heteromer；Protein × 11 PDB declaration: 13-meric（13） Consistent with all polymers
Chain I 1–940（940 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 1 ZN ZINC ION × 5 CA CALCIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Leica EM GP2
Resolution 3.91 Å
28KE Cryo-EM structure of the human holo-TFIIH-XPC-XPA complex bound to bulky lesion-mimic DNA Deposited 2026-02-04 Assembly 1 Protein–DNA Heteromer；Protein × 10 PDB declaration: 12-meric（12） Consistent with all polymers
Chain I 1–940（940 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 1 ZN ZINC ION × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Leica EM GP2
Resolution 3.60 Å
2GGM Human centrin 2 xeroderma pigmentosum group C protein complex Deposited 2006-03-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 847–863（17 aa） Fragment：Centrin Binding Region (residues 846-862)
Not recorded CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；2.5-3.2 M (NH4)2SO4, 0.1-0.4 M Na2HPO4, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.35 Å R-free 0.245
2GGM Human centrin 2 xeroderma pigmentosum group C protein complex Deposited 2006-03-24 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 847–863（17 aa） Fragment：Centrin Binding Region (residues 846-862)
Not recorded CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；2.5-3.2 M (NH4)2SO4, 0.1-0.4 M Na2HPO4, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.35 Å R-free 0.245
2OBH Centrin-XPC peptide Deposited 2006-12-19 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 846–862（17 aa） Fragment：XPC fragment (Residues: 847-863)
Chain D 846–862（17 aa） Fragment：XPC fragment (Residues: 847-863)
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 9；298 K；30% MPEG 550, 0.1M NaCl, 0.1M Bicine pH 9.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 1.80 Å R-free 0.265
2RVB Solution structure of the complex between XPC acidic domain and TFIIH p62 PH domain Deposited 2015-07-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 109–156（48 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.8；305 K；Ionic strength (raw mmCIF value) 0.02；Pressure ambient
NMR sample composition 0.4 mM [U-99% 13C; U-99% 15N] XPC acidic domain-1, 0.48 mM TFIIH p62 PH domain-2, 20 mM potassium phosphate-3, 5 mM [U-2H] DTT-4, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 0.4 mM [U-99% 13C; U-99% 15N] XPC acidic domain-5, 0.48 mM TFIIH p62 PH domain-6, 20 mM potassium phosphate-7, 5 mM [U-2H] DTT-8, 100% D2O | 100% D2O
NMR sample composition 0.4 mM [U-99% 13C; U-99% 15N] TFIIH p62 PH domain-9, 0.48 mM XPC acidic domain-10, 20 mM potassium phosphate-11, 5 mM [U-2H] DTT-12, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 0.4 mM [U-99% 13C; U-99% 15N] TFIIH p62 PH domain-13, 0.48 mM XPC acidic domain-14, 20 mM potassium phosphate-15, 5 mM [U-2H] DTT-16, 100% D2O | 100% D2O
Resolution not provided
9PCP NER dual incision complex - NoG Deposited 2025-06-28 Assembly 1 Protein–DNA Heteromer；Protein × 13 PDB declaration: 15-meric（15） Consistent with all polymers
Chain H 1–940（940 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 1 ZN ZINC ION × 6 CA CALCIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
9PD3 NER dual incision complex - DuIS Deposited 2025-06-30 Assembly 1 Protein–DNA Heteromer；Protein × 15 PDB declaration: 17-meric（17） Consistent with all polymers
Chain H 1–940（940 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
9XYU NER complex - C7CAD.ATP Deposited 2025-08-26 Assembly 1 Protein–DNA Heteromer；Protein × 9 PDB declaration: 11-meric（11） Consistent with all polymers
Chain H 1–940（940 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 1 ZN ZINC ION × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.