1A6A

THE STRUCTURE OF AN INTERMEDIATE IN CLASS II MHC MATURATION: CLIP BOUND TO HLA-DR3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.246 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The structure of an intermediate in class II MHC maturation: CLIP bound to HLA-DR3.

Ghosh, P.Amaya, M.Mellins, E.Wiley, D.C.

(1995) Nature 378: 457-462

  • DOI: 10.1038/378457a0

  • PubMed Abstract: 
  • A complex between HLA-DR3 and a fragment of invariant chain called CLIP was isolated from a human cell line defective in antigen presentation and its X-ray crystal structure determined. Previous data indicate that this complex is an intermediate in c ...

    A complex between HLA-DR3 and a fragment of invariant chain called CLIP was isolated from a human cell line defective in antigen presentation and its X-ray crystal structure determined. Previous data indicate that this complex is an intermediate in class II histocompatibility maturation, occurring between invariant chain-DR3 and antigenic peptide-DR3 complexes. The structure shows that the CLIP fragment binds to DR3 in a way almost identical to that in which antigenic peptides bind class II histocompatibility glycoproteins. The structure is the substrate for the loading of antigenic peptides by an exchange process catalysed by DM.


    Organizational Affiliation

    Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts 02138, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA class II histocompatibility antigen, DR alpha chain
A
176Homo sapiensGene Names: HLA-DRA (HLA-DRA1)
Find proteins for P01903 (Homo sapiens)
Go to Gene View: HLA-DRA
Go to UniProtKB:  P01903
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HLA class II histocompatibility antigen, DR-1 beta chain
B
187Homo sapiensGene Names: HLA-DRB1
Find proteins for P01912 (Homo sapiens)
Go to Gene View: HLA-DRB1
Go to UniProtKB:  P01912
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
HLA class II histocompatibility antigen, gamma chain
C
15Homo sapiensGene Names: CD74 (DHLAG)
Find proteins for P04233 (Homo sapiens)
Go to Gene View: CD74
Go to UniProtKB:  P04233
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
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: 2.75 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.246 
  • Space Group: P 32 1 2
Unit Cell:
Length (Å)Angle (°)
a = 78.450α = 90.00
b = 78.450β = 90.00
c = 159.100γ = 120.00
Software Package:
Software NamePurpose
ROTAVATA/AGROVATAdata reduction
AMoREphasing
DENZOdata reduction
CCP4data scaling
ROTAVATA)data scaling
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-05-27
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance