1J7X

CRYSTAL STRUCTURE OF A FUNCTIONAL UNIT OF INTERPHOTORECEPTOR RETINOID-BINDING PROTEIN (IRBP)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the functional unit of interphotoreceptor retinoid binding protein.

Loew, A.Gonzalez-Fernandez, F.

(2002) Structure 10: 43-49


  • PubMed Abstract: 
  • Interphotoreceptor retinoid binding protein (IRBP), the major soluble component of the interphotoreceptor matrix, is critical to the function, integrity, and development of the vertebrate retina. Although its role is poorly understood, IRBP has been ...

    Interphotoreceptor retinoid binding protein (IRBP), the major soluble component of the interphotoreceptor matrix, is critical to the function, integrity, and development of the vertebrate retina. Although its role is poorly understood, IRBP has been thought to protect 11-cis retinal and all-trans retinol while facilitating their exchange between the photoreceptors and retinal-pigmented epithelium. We determined the X-ray structure of one of the functional units, or modules, of Xenopus laevis IRBP to 1.8 A resolution by multiwavelength anomalous dispersion. The monomeric protein consists of two domains separated by a hydrophobic ligand binding site. A structural homology to the recently solved photosystem II D1 C-terminal-processing protease and the enoyl-CoA isomerase/hydratase family suggests the utility of a common fold used in diverse settings, ranging from proteolysis to fatty acid isomerization to retinoid transport.


    Organizational Affiliation

    Department of Biochemistry, University of Texas, Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA. andreas.loew@abbott.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
INTERPHOTORECEPTOR RETINOID-BINDING PROTEIN
A
302Xenopus laevisMutation(s): 0 
Gene Names: rbp3
Find proteins for Q7SZI7 (Xenopus laevis)
Go to UniProtKB:  Q7SZI7
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.205 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 63.144α = 90.00
b = 65.756β = 90.00
c = 68.174γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
REFMACrefinement
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-02-20
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance