1QZE

HHR23a protein structure based on residual dipolar coupling data


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

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This is version 1.2 of the entry. See complete history


Literature

DNA-repair protein hHR23a alters its protein structure upon binding proteasomal subunit S5a

Walters, K.J.Lech, P.J.Goh, A.M.Wang, Q.Howley, P.M.

(2003) Proc Natl Acad Sci U S A 100: 12694-12699

  • DOI: 10.1073/pnas.1634989100
  • Primary Citation of Related Structures:  
    1OQY, 1QZE

  • PubMed Abstract: 
  • The Rad23 family of proteins, including the human homologs hHR23a and hHR23b, stimulates nucleotide excision repair and has been shown to provide a novel link between proteasome-mediated protein degradation and DNA repair. In this work, we illustrate how ...

    The Rad23 family of proteins, including the human homologs hHR23a and hHR23b, stimulates nucleotide excision repair and has been shown to provide a novel link between proteasome-mediated protein degradation and DNA repair. In this work, we illustrate how the proteasomal subunit S5a regulates hHR23a protein structure. By using NMR spectroscopy, we have elucidated the structure and dynamic properties of the 40-kDa hHR23a protein and show it to contain four structured domains connected by flexible linker regions. In addition, we reveal that these domains interact in an intramolecular fashion, and by using residual dipolar coupling data in combination with chemical shift perturbation analysis, we present the hHR23a structure. By itself, hHR23a adopts a closed conformation defined by the interaction of an N-terminal ubiquitin-like domain with two ubiquitin-associated domains. Interestingly, binding of the proteasomal subunit S5a disrupts the hHR23a interdomain interactions and thereby causes it to adopt an opened conformation.


    Organizational Affiliation

    Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA. walte048@umn.edu



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
UV excision repair protein RAD23 homolog A A368Homo sapiensMutation(s): 0 
Gene Names: RAD23A
Find proteins for P54725 (Homo sapiens)
Explore P54725 
Go to UniProtKB:  P54725
NIH Common Fund Data Resources
PHAROS:  P54725
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 
  • OLDERADO: 1QZE Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-10-21
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance