ISDA

Entry Detail

PDB ID:

1I4F

Keywords:

IMMUNE SYSTEM

Title:

CRYSTAL STRUCTURE OF HLA-A*0201/MAGE-A4-PEPTIDE COMPLEX

Biological Source:

Source Organism:

Homo sapiens,

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2001-02-21

Release Date:

2001-07-25

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.40 Å

R-Value Free:

0.17

R-Value Work:

0.13

R-Value Observed:

0.13

Space Group:

P 1 21 1

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:HLA CLASS I HISTOCOMPATIBILITY ANTIGEN, A-2 ALPHA CHAIN
Chain IDs:A
Chain Length:275
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P04439 Pfam ID:PF00129, PF07654

Protein Blast

Polymer Type:polypeptide(L)
Description:BETA-2-MICROGLOBULIN
Chain IDs:B
Chain Length:100
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P61769 Pfam ID:PF07654

Protein Blast

Polymer Type:polypeptide(L)
Description:MELANOMA-ASSOCIATED ANTIGEN 4
Chain IDs:C
Chain Length:10
Number of Molecules:1
Biological Source:

UniProt ID:P43358

Ligand Molecules

1PG

Primary Citation

High-resolution structure of HLA-A*0201 in complex with a tumour-specific antigenic peptide encoded by the MAGE-A4 gene.

Hillig, R.C, Coulie, P.G, Stroobant, V, Saenger, W, Ziegler, A, Hulsmeyer, M, Duffour, M.T, Chaux, P, Lurquin, C, Cornelis, G, Boon, T, van der Bruggen, P.Show

J.Mol.Biol. 310 1167 1176 (2001)

PMID: 11502003 DOI: 10.1006/jmbi.2001.4816

Abstact

The heterotrimeric complex of the human major histocompatibity complex (MHC) molecule HLA-A*0201, beta2-microglobulin and the decameric peptide GVYDGREHTV derived from the melanoma antigen (MAGE-A4 protein has been determined by X-ray crystallography at 1.4 A resolution. MAGE-A4 belongs to a family of genes that are specifically expressed in a variety of tumours. MAGE-A4-derived peptides are presented by MHC molecules at the cell surface to cytotoxic T-lymphocytes. As the HLA-A*0201:MAGE-A4 complex occurs only on tumour cells, it is considered to be an appropriate target for immunotherapy. The structure presented here reveals potential epitopes specific to the complex and indicates which peptide residues could be recognised by T-cell receptors. In addition, as the structure could be refined anisotropically, it was possible to describe the movements of the bound peptide in more detail.

Legend

Protein

Chemical

Disease

Primary Citation of related structures