1CRB

CRYSTALLOGRAPHIC STUDIES ON A FAMILY OF CELLULAR LIPOPHILIC TRANSPORT PROTEINS. REFINEMENT OF P2 MYELIN PROTEIN AND THE STRUCTURE DETERMINATION AND REFINEMENT OF CELLULAR RETINOL-BINDING PROTEIN IN COMPLEX WITH ALL-TRANS-RETINOL


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystallographic studies on a family of cellular lipophilic transport proteins. Refinement of P2 myelin protein and the structure determination and refinement of cellular retinol-binding protein in complex with all-trans-retinol.

Cowan, S.W.Newcomer, M.E.Jones, T.A.

(1993) J.Mol.Biol. 230: 1225-1246

  • DOI: 10.1006/jmbi.1993.1238
  • Primary Citation of Related Structures:  1PMP

  • PubMed Abstract: 
  • P2 myelin protein (P2) and cellular retinol binding protein (CRBP) are members of a family of cellular lipophilic transport proteins. P2 has been refined at a resolution of 2.7 A, and CRBP has been solved by molecular replacement and refined to a res ...

    P2 myelin protein (P2) and cellular retinol binding protein (CRBP) are members of a family of cellular lipophilic transport proteins. P2 has been refined at a resolution of 2.7 A, and CRBP has been solved by molecular replacement and refined to a resolution of 2.1 A. The members of this family form a compact three-dimensional structure built up from ten antiparallel strands that fold to form an orthogonal barrel containing the ligand. In P2, the carboxylate group of an oleic acid ligand interacts with the side-chains of two arginine (106 and 126), and one tyrosine (128) residues. The ligand adopts a U-shaped conformation. In CRBP, the all-trans-retinol has a planar conformation with its alcohol group hydrogen bonding to the side-chain of glutamine 108 (equivalent to residue 106 in P2). The local interactions of glutamine 108 explain CRBP's preference for binding retinol rather than retinal. The side-chain of lysine 40 makes a close contact with the isoprene tail of the retinol.


    Related Citations: 
    • Crystallization of and Preliminary X-Ray Data for an Intracellular Vitamin A-Binding Protein from Rat Liver
      Newcomer, M.E.,Liljas, A.,Eriksson, V.,Sundelin, J.,Rask, L.,Peterson, P.A.
      (1981) J.Biol.Chem. 256: 8162
    • Lipid-Binding Proteins: A Family of Fatty Acid and Retinoid Transport Proteins
      Banaszak, L.,Winter, N.,Xu, Z.,Bernlohr, D.A.,Cowan, S.,Jones, T.A.
      (1994) Adv.Protein Chem. 45: 89
    • Crystallographic Refinement of Human Serum Retinol Binding Protein at 2 Angstroms Resolution
      Cowan, S.W.,Newcomer, M.E.,Jones, T.A.
      (1990) Proteins 8: 44
    • The Primary Structure of Piscine (Oncorhynchus Mykiss) Retinol-Binding Protein and a Comparison with the Three-Dimensional Structure of Mammalian Retinol-Binding Protein
      Zapponi, M.C.,Zanotti, G.,Stoppini, M.,Berni, R.
      (1992) Eur.J.Biochem. 210: 937


    Organizational Affiliation

    Department of Molecular Biology, Uppsala University Biomedical Centre, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CELLULAR RETINOL BINDING PROTEIN
A
134Rattus norvegicusGene Names: Rbp1 (Rbp-1)
Find proteins for P02696 (Rattus norvegicus)
Go to UniProtKB:  P02696
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
RTL
Query on RTL

Download SDF File 
Download CCD File 
A
RETINOL
C20 H30 O
FPIPGXGPPPQFEQ-OVSJKPMPSA-N
 Ligand Interaction
CD
Query on CD

Download SDF File 
Download CCD File 
A
CADMIUM ION
Cd
WLZRMCYVCSSEQC-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.188 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 40.090α = 90.00
b = 47.390β = 90.00
c = 69.340γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-12-20
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other