Macromolecule Content

• Total Structure Weight: 8.15 kDa 
• Atom Count: 572 
• Residue Count: 72 
• Unique protein chains: 1

1PVE

Solution structure of XPC binding domain of hHR23B

• DOI: 10.2210/pdb1PVE/pdb
• BMRB: 5868

• Classification: DNA BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2003-06-27 Released: 2004-08-10 
• Deposition Author(s): Kim, B., Ryu, K.-S., Kim, H.J., Choi, B.-S.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: structures with the least restraint violations 

Literature

Solution structure and backbone dynamics of the XPC-binding domain of the human DNA repair protein hHR23B.

Kim, B., Ryu, K.S., Kim, H.J., Cho, S.J., Choi, B.S.

(2005) FEBS J 272: 2467-2476

• PubMed: 15885096 
• DOI: 10.1111/j.1742-4658.2005.04667.x
• Primary Citation of Related Structures:  
  1PVE


• PubMed Abstract: 
  

Human cells contain two homologs of the yeast RAD23 protein, hHR23A and hHR23B, which participate in the DNA repair process. hHR23B houses a domain (residues 277-332, called XPCB) that binds specifically and directly to the xeroderma pigmentosum group C protein (XPC) to initiate nucleotide excision repair (NER). This domain shares sequence homology with a heat shock chaperonin-binding motif that is also found in the stress-inducible yeast phosphoprotein STI1. We determined the solution structure of a protein fragment containing amino acids 275-342 of hHR23B (termed XPCB-hHR23B) and compared it with the previously reported solution structures of the corresponding domain of hHR23A. The periodic positioning of proline residues in XPCB-hHR23B produced kinked alpha helices and assisted in the formation of a compact domain. Although the overall structure of the XPCB domain was similar in both XPCB-hHR23B and XPCB-hHR23A, the N-terminal part (residues 275-283) of XPCB-hHR23B was more flexible than the corresponding part of hHR23A. We tried to infer the characteristics of this flexibility through (15)N-relaxation studies. The hydrophobic surface of XPCB-hHR23B, which results from the diverse distribution of N-terminal region, might give rise to the functional pleiotropy observed in vivo for hHR23B, but not for hHR23A.

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Organizational Affiliation: 

Department of Chemistry, and National Creative Research Initiative Center for the Repair System of Damaged DNA, Korea Advanced Institute of Science and Technology, South Korea.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
UV excision repair protein RAD23 homolog B	A	72	Homo sapiens	Mutation(s): 0  Gene Names: HH23B, RAD23B
Find proteins for P54727 (Homo sapiens) Explore P54727  Go to UniProtKB:  P54727
NIH Common Fund Data Resources
PHAROS:  P54727 GTEx:  ENSG00000119318

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: structures with the least restraint violations 
• OLDERADO: 1PVE Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-06-27 
• Released Date: 2004-08-10 
Deposition Author(s): Kim, B., Ryu, K.-S., Kim, H.J., Choi, B.-S.

Revision History 

• Version 1.0: 2004-08-10
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance