2JCQ

The hyaluronan binding domain of murine CD44 in a Type A complex with an HA 8-mer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.25 Å
  • R-Value Free: 0.156 
  • R-Value Work: 0.130 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structures of the Cd44-Hyaluronan Complex Provide Insight Into a Fundamental Carbohydrate-Protein Interaction.

Banerji, S.Wright, A.J.Noble, M.E.M.Mahoney, D.J.Campbell, I.D.Day, A.J.Jackson, D.G.

(2008) Nat.Struct.Mol.Biol. 14: 234

  • DOI: 10.1038/nsmb1201
  • Primary Citation of Related Structures:  
  • Also Cited By: 4MRF, 4MRH, 4MRG, 4MRE, 4MRD

  • PubMed Abstract: 
  • Regulation of transient interactions between cells and the ubiquitous matrix glycosaminoglycan hyaluronan is crucial to such fundamental processes as embryonic development and leukocyte homing. Cd44, the primary cell surface receptor for hyaluronan, ...

    Regulation of transient interactions between cells and the ubiquitous matrix glycosaminoglycan hyaluronan is crucial to such fundamental processes as embryonic development and leukocyte homing. Cd44, the primary cell surface receptor for hyaluronan, binds ligand via a lectin-like fold termed the Link module, but only after appropriate functional activation. The molecular details of the Cd44-hyaluronan interaction and hence the structural basis for this activation are unknown. Here we present the first crystal structure of Cd44 complexed with hyaluronan. This reveals that the interaction with hyaluronan is dominated by shape and hydrogen-bonding complementarity and identifies two conformational forms of the receptor that differ in orientation of a crucial hyaluronan-binding residue (Arg45, equivalent to Arg41 in human CD44). Measurements by NMR indicate that the conformational transition can be induced by hyaluronan binding, providing further insight into possible mechanisms for regulation of Cd44.


    Organizational Affiliation

    Medical Research Council Human Immunology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CD44 ANTIGEN
A
154Mus musculusMutation(s): 0 
Gene Names: Cd44 (Ly-24)
Find proteins for P15379 (Mus musculus)
Go to UniProtKB:  P15379
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
BDP
Query on BDP

Download SDF File 
Download CCD File 
A
BETA-D-GLUCOPYRANURONIC ACID
D-GLUCURONIC ACID
C6 H10 O7
AEMOLEFTQBMNLQ-QIUUJYRFSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.25 Å
  • R-Value Free: 0.156 
  • R-Value Work: 0.130 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 30.794α = 90.00
b = 82.051β = 117.89
c = 32.278γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
REFMACrefinement
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-01-30
    Type: Initial release
  • Version 1.1: 2016-08-24
    Type: Atomic model, Database references, Derived calculations, Non-polymer description, Other, Refinement description, Source and taxonomy, Structure summary, Version format compliance