1HLA image
Deposition Date 1987-10-15
Release Date 1988-01-16
Last Version Date 2024-02-07
Entry Detail
PDB ID:
1HLA
Keywords:
HISTOCOMPATIBILITY ANTIGEN
Title:
STRUCTURE OF THE HUMAN CLASS I HISTOCOMPATIBILITY ANTIGEN, HLA-A2
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.50 Å
Space Group:
P 21 21 21
1HLA validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CLASS I HISTOCOMPATIBILITY ANTIGEN (HLA-A2) (ALPHA CHAIN)
Chain IDs:A
Chain Length:270
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P04439 Pfam ID:PF00129, PF07654
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:BETA 2-MICROGLOBULIN
Gene (Uniprot):B2M
Chain IDs:B (auth: M)
Chain Length:97
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P61769 Pfam ID:PF07654
Ligand Molecules
NA
Primary Citation
Structure of the human class I histocompatibility antigen, HLA-A2.
Nature 329 506 512 (1987)
PMID: 3309677 DOI: 10.1038/329506a0

Abstact

The class I histocompatibility antigen from human cell membranes has two structural motifs: the membrane-proximal end of the glycoprotein contains two domains with immunoglobulin-folds that are paired in a novel manner, and the region distal from the membrane is a platform of eight antiparallel beta-strands topped by alpha-helices. A large groove between the alpha-helices provides a binding site for processed foreign antigens. An unknown 'antigen' is found in this site in crystals of purified HLA-A2.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
3HLA