CLIP-region mediated interaction of Invariant chain with MHC class I molecules
- 27 April 2006
- journal article
- Published by Wiley in FEBS Letters
- Vol. 580 (13) , 3112-3116
- https://doi.org/10.1016/j.febslet.2006.04.060
Abstract
An association between the MHC class II chaperone molecule Invariant chain (Ii) and MHC class I molecules is known to occur, but the basis of the interaction is undetermined. Evidence is presented here that the CLIP region of Ii is involved in this interaction. A peptide encoding residues 91–99 of CLIP (MRMATPLLM) stabilised multiple MHC class I alleles, with the methionine residue at position 99 having a crucial role in binding to H2-Kb, whereas methionine at position 91 also appeared important in binding to RT1-Aa. Ii can also be detected in the class I MHC peptide loading complex. These data provide an explanation for the association of Ii and MHC class I moleculesKeywords
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