1W9G

Structure of ERH (Enhencer of Rudimentary Gene)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.199 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of the Conserved Transcriptional Repressor Enhancer of Rudimentary Homolog

Wan, C.Tempel, W.Liu, Z.Wang, B.-C.Rose, R.B.

(2005) Biochemistry 44: 5017

  • DOI: 10.1021/bi047785w
  • Primary Citation of Related Structures:  
    1W9G

  • PubMed Abstract: 
  • erh (enhancer of rudimentary homolog) is a ubiquitously expressed transcriptional coregulator that is highly conserved among eukaryotes, from humans to plants to protozoa. Functions attributed to erh include enhancement of pyrimidine biosynthesis, a role in cell cycle regulation, and repression of the tissue-specific transcription factor HNF-1 (hepatocyte nuclear factor-1) through binding the coactivator DCoH (dimerization cofactor of HNF1) ...

    erh (enhancer of rudimentary homolog) is a ubiquitously expressed transcriptional coregulator that is highly conserved among eukaryotes, from humans to plants to protozoa. Functions attributed to erh include enhancement of pyrimidine biosynthesis, a role in cell cycle regulation, and repression of the tissue-specific transcription factor HNF-1 (hepatocyte nuclear factor-1) through binding the coactivator DCoH (dimerization cofactor of HNF1). No homologous sequences, other than erh orthologs, have been identified, and little is known about the interactions of erh. To further elucidate its function, we determined the crystal structure of erh to 2.0 A resolution. The erh structure is a novel alpha + beta fold consisting of a four-stranded antiparallel beta sheet with three amphipathic alpha helices situated on one face of the beta sheet. Structure-based searches of the Protein Data Bank, like sequence-based searches, failed to identify paralogs. We present structural and biochemical evidence that erh functions as a dimer. The dimer interface consists of a beta sandwich composed of the beta sheet from each monomer. Many of the surface residues of erh are conserved, including patches of hydrophobic and charged residues, suggesting protein-protein interaction interfaces. Two putative CKII phosphorylation sites are highly ordered in the structure and are predicted to disrupt dimerization and protein-protein interactions.


    Organizational Affiliation

    Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, North Carolina 27695-7622, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ENHANCER OF RUDIMENTARY HOMOLOGA, B104Homo sapiensMutation(s): 0 
Gene Names: ERH
UniProt & NIH Common Fund Data Resources
Find proteins for P84090 (Homo sapiens)
Explore P84090 
Go to UniProtKB:  P84090
PHAROS:  P84090
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.199 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.48α = 90
b = 62.676β = 117.96
c = 48.564γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
MOSFLMdata scaling
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-04-06
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance