1i4f
From Proteopedia
CRYSTAL STRUCTURE OF HLA-A*0201/MAGE-A4-PEPTIDE COMPLEX
Contents |
Overview
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.
Disease
Known disease associated with this structure: Abacavir hypersensitivity, susceptibility to OMIM:[142800], Ankylosing spondylitis, susceptibility to, 1 OMIM:[142800], Stevens-Johnson syndrome, susceptibility to OMIM:[142800], Hypoproteinemia, hypercatabolic OMIM:[109700]
About this Structure
1I4F is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.
Reference
High-resolution structure of HLA-A*0201 in complex with a tumour-specific antigenic peptide encoded by the MAGE-A4 gene., Hillig RC, Coulie PG, Stroobant V, Saenger W, Ziegler A, Hulsmeyer M, J Mol Biol. 2001 Jul 27;310(5):1167-76. PMID:11502003 Page seeded by OCA on Fri May 2 19:33:38 2008
