1fzo
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(New page: 200px<br /><applet load="1fzo" size="450" color="white" frame="true" align="right" spinBox="true" caption="1fzo, resolution 1.80Å" /> '''MHC CLASS I NATURAL ...)
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Revision as of 13:25, 20 November 2007
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MHC CLASS I NATURAL MUTANT H-2KBM8 HEAVY CHAIN COMPLEXED WITH BETA-2 MICROGLOBULIN AND SENDAI VIRUS NUCLEOPROTEIN
Overview
The K(bm1) and K(bm8) natural mutants of the murine MHC class I molecule, H-2K(b) were originally identified by allograft rejection. They also bind, viral peptides VSV8 and SEV9 with high affinity, but their peptide, complexes have substantially decreased thermostability, and the K(bm1), complexes do not elicit alloreactive T cell responses. Crystal structures, of the four mutant complexes at 1.7-1.9 A resolution are similar to the, corresponding wild-type K(b) structures, except in the vicinity of the, mutated residues, which alter the electrostatic potential, topology, hydrogen bonding, and local water structure of the peptide binding groove., Thus, these natural K(b) mutations define the minimal perturbations in the, peptide environment that alter antigen presentation to T cells and abolish, alloreactivity.
About this Structure
1FZO is a Protein complex structure of sequences from Mus musculus with NAG, PO4, MRD and MPD as ligands. Full crystallographic information is available from OCA.
Reference
The crystal structures of K(bm1) and K(bm8) reveal that subtle changes in the peptide environment impact thermostability and alloreactivity., Rudolph MG, Speir JA, Brunmark A, Mattsson N, Jackson MR, Peterson PA, Teyton L, Wilson IA, Immunity. 2001 Mar;14(3):231-42. PMID:11290333
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