Biological Assembly 1  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PQS (software)

Biological Assembly 2  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 24.55 kDa 
• Atom Count: 1703 
• Residue Count: 203 
• Unique protein chains: 1

1W9G

Structure of ERH (Enhencer of Rudimentary Gene)

• DOI: 10.2210/pdb1W9G/pdb

• Classification: ERH(ENHANCER OF RUDIMENTARY HOMOLOG)
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2004-10-13 Released: 2005-04-06 
• Deposition Author(s): Wan, C., Tempel, W., Liu, Z., Wang, B.-C., Rose, R.B.

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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 

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

• PubMed: 15794639 
• 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). 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ENHANCER OF RUDIMENTARY HOMOLOG	A, B	104	Homo sapiens	Mutation(s): 0  Gene Names: ERH
Find proteins for P84090 (Homo sapiens) Explore P84090  Go to UniProtKB:  P84090
NIH Common Fund Data Resources
PHAROS:  P84090 GTEx:  ENSG00000100632

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 = 45.48	α = 90
b = 62.676	β = 117.96
c = 48.564	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
MOSFLM	data scaling
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-10-13 
• Released Date: 2005-04-06 
Deposition Author(s): Wan, C., Tempel, W., Liu, Z., Wang, B.-C., Rose, R.B.

Revision History 

• 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