Structure of Human RPC62 (partial)

Experimental Data Snapshot

  • Resolution: 2.95 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.229 

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This is version 1.2 of the entry. See complete history


Structure-Function Analysis of Hrpc62 Provides Insights Into RNA Polymerase III Transcription

Lefevre, S.Dumay-Odelot, H.El Ayoubi, L.Budd, A.Legrand, P.Pinaud, N.Teichmann, M.Fribourg, S.

(2011) Nat Struct Mol Biol 18: 352

  • DOI: https://doi.org/10.1038/nsmb.1996
  • Primary Citation of Related Structures:  
    2XUB, 2XV4

  • PubMed Abstract: 

    The 17-subunit human RNA polymerase III (hPol III) transcribes small, untranslated RNA genes that are involved in the regulation of transcription, splicing and translation. hPol III subunits hRPC62, hRPC39 and hRPC32 form a stable ternary subcomplex required for promoter-specific transcription initiation by hPol III. Here, we report the crystal structure of hRPC62. This subunit folds as a four-tandem extended winged helix (eWH) protein that is structurally related to the transcription factor TFIIEα N terminus. Through biochemical analyses, we mapped the protein-protein interactions of hRPC62, hRPC32 and hRPC39. In addition, we demonstrated that hRPC62 and hRPC39 bind single-stranded and duplex DNA, respectively, in a sequence-independent manner. Overall, we shed light on structural similarities between the hPol III-specific subunit hRPC62 and TFIIEα and propose specific functions for hRPC39 and hRPC62 in transcription initiation by hPol III.

  • Organizational Affiliation

    Institut Européen de Chimie et Biologie, Pessac, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASE III SUBUNIT RPC3A [auth S]534Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9BUI4 (Homo sapiens)
Explore Q9BUI4 
Go to UniProtKB:  Q9BUI4
GTEx:  ENSG00000186141 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9BUI4
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.95 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.229 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 162.54α = 90
b = 69.92β = 112.84
c = 75.97γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-03-02
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance