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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：P54727 New Search
12PDB entries
12Biological 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
1P1A NMR structure of ubiquitin-like domain of hHR23B Deposited 2003-04-11 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–82（82 aa） Fragment：Ubiquitin-like domain
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6；303 K；Ionic strength (raw mmCIF value) 50mM sodium phosphate + 100mM sodium chloride；Pressure ambient
NMR measurement conditions pH 6；303 K；Ionic strength (raw mmCIF value) 50mM sodium phosphate + 100mM sodium chloride；Pressure ambient
NMR measurement conditions pH 6；303 K；Ionic strength (raw mmCIF value) 50mM sodium phosphate + 100mM sodium chloride；Pressure ambient
NMR sample composition 2mM UbL domain 15N,13C; 50mM Sodium Phosphate Buffer with 100mM NaCl | 92.5% H2O, 7.5% D2O
NMR sample composition 2mM UbL domain 15N; 50mM Sodium Phosphate Buffer with 100mM NaCl | 92.5% H2O, 7.5% D2O
NMR sample composition 2mM UbL domain non-labeled; 50mM Sodium Phosphate Buffer with 100mM NaCl | 100% D2O
Resolution not provided
1PVE Solution structure of XPC binding domain of hHR23B Deposited 2003-06-27 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 275–342（68 aa） Fragment：XPC binding domain
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 7；300 K；Ionic strength (raw mmCIF value) 40mM Sodium Phosphate, 160mM Sodium Chloride, 10mM CHAPS；Pressure 1
NMR sample composition 1mM hHR23B(275-342) U-15N, 13C; 40mM phosphate buffer NA; 10mM CHAPS NA | 90% H2O/10% D2O
Resolution not provided
1UEL Solution structure of ubiquitin-like domain of hHR23B complexed with ubiquitin-interacting motif of proteasome subunit S5a Deposited 2003-05-19 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–87（87 aa） Fragment：ubiquitin-like domain (RESIDUES 1-95)
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR sample composition U-15N, U-13C | 20mM potassium phosphate buffer (pH 6.8), 5mM KCl, 90% H2O, 10% D2O
Resolution not provided
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 J 1–409（409 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 J 1–409（409 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
8EBS Initial DNA-lesion (Cy5) binding by XPC and TFIIH Deposited 2022-08-31 Assembly 1 Protein–DNA Heteromer；Protein × 10 PDB declaration: dodecameric（12） Consistent with all polymers
Chain I 1–409（409 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 1 ZN ZINC ION × 5 CA CALCIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.00 Å
8EBV Initial DNA-lesion (AP) binding by XPC and TFIIH complex 1 Deposited 2022-08-31 Assembly 1 Protein–DNA Heteromer；Protein × 10 PDB declaration: dodecameric（12） Consistent with all polymers
Chain I 1–409（409 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 1 ZN ZINC ION × 5 CA CALCIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 7.10 Å
8EBW Initial DNA-lesion (AP) binding by XPC and TFIIH complex2 Deposited 2022-08-31 Assembly 1 Protein–DNA Heteromer；Protein × 10 PDB declaration: dodecameric（12） Consistent with all polymers
Chain I 1–409（409 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 1 ZN ZINC ION × 5 CA CALCIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.60 Å
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 I 1–409（409 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
9VFE Solution structure of XPC binding domain of hHR23B (apo form) Deposited 2025-06-11 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 271–342（72 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 7.4；300 K；Ionic strength (raw mmCIF value) 160；Pressure 1
NMR sample composition 1.1 mM [U-100% 13C; U-100% 15N] UV excision repair protein RAD23 homolog B, 20 mM sodium phosphate, 160 mM sodium chloride, 95% H2O/5% [U-100% 2H] D2O | 95% H2O/5% [U-100% 2H] D2O
Resolution not provided
9VFF Solution structure of XPC binding domain of a hHR23B variant - H274N/H323Q Deposited 2025-06-11 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 271–342（72 aa）
Mutation：H274N, H323Q No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 7.4；300 K；Ionic strength (raw mmCIF value) 160；Pressure 1
NMR sample composition 1.1 mM [U-100% 13C; U-100% 15N] UV excision repair protein RAD23 homolog B, 20 mM sodium phosphate, 160 mM sodium chloride, 5 % v/v [U-100% 2H] D2O, 95 % v/v H2O | 5 % v/v [U-100% 2H] D2O, 95 % v/v H2O
Resolution not provided
9VFG Solution structure of silver bound XPC binding domain of hHR23B (holo form) Deposited 2025-06-11 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 271–342（72 aa）
Not recorded AG SILVER ION × 1 SOLUTION NMR
NMR measurement conditions pH 7.4；300 K；Ionic strength (raw mmCIF value) 0；Pressure 1
NMR sample composition 1.1 mM [U-100% 13C; U-100% 15N] UV excision repair protein RAD23 homolog B, 50 mM HEPES, 5 % [U-100% 2H] D2O, 95 % H2O | 5 % [U-100% 2H] D2O, 95 % H2O
Resolution not provided

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.