2HVA

Solution Structure of the haem-binding protein p22HBP


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A Novel Haem-binding Interface in the 22 kDa Haem-binding Protein p22HBP.

Gell, D.A.Westman, B.J.Gorman, D.Liew, C.K.Welch, J.J.Weiss, M.J.Mackay, J.P.

(2006) J.Mol.Biol. 362: 287-297

  • DOI: 10.1016/j.jmb.2006.07.010

  • PubMed Abstract: 
  • The 22 kDa haem-binding protein, p22HBP, is highly expressed in erythropoietic tissues and binds to a range of metallo- and non-metalloporphyrin molecules with similar affinities, suggesting a role in haem regulation or synthesis. We have determined ...

    The 22 kDa haem-binding protein, p22HBP, is highly expressed in erythropoietic tissues and binds to a range of metallo- and non-metalloporphyrin molecules with similar affinities, suggesting a role in haem regulation or synthesis. We have determined the three-dimensional solution structure of p22HBP and mapped the porphyrin-binding site, which comprises a number of loops and a alpha-helix all located on a single face of the molecule. The structure of p22HBP is related to the bacterial multi-drug resistance protein BmrR, and is the first protein with this fold to be identified in eukaryotes. Strikingly, the porphyrin-binding site in p22HBP is located in a similar position to the drug-binding site of BmrR. These similarities suggest that the broad ligand specificity observed for both BmrR and p22HBP may result from a conserved ligand interaction mechanism. Taken together, these data suggest that the both the fold and its associated function, that of binding to a broad range of small hydrophobic molecules, are ancient, and have been adapted throughout evolution for a variety of purposes.


    Organizational Affiliation

    School of Molecular and Microbial Biosciences, University of Sydney, NSW 2006, Australia. dagell@usyd.edu.au




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heme-binding protein 1
A
192Mus musculusMutation(s): 0 
Gene Names: Hebp1 (Hbp)
Find proteins for Q9R257 (Mus musculus)
Go to UniProtKB:  Q9R257
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the least restraint violations 
  • Olderado: 2HVA Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-08-08
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance