期刊
MOLECULAR IMMUNOLOGY
卷 54, 期 3-4, 页码 386-396出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.molimm.2013.01.004
关键词
Tryptophan fluorescence; Thermal denaturation; Major histocompatibility complex class I molecules; Ligand binding kinetics; Protein folding; Protein glycosylation
资金
- Jacobs University
- Deutsche Forschungsgemeinschaft
- DAAD (German Academic Exchange Service)
When major histocompatibility complex (MHC) class I molecules bind peptide, they change their conformation and their dynamics. The structure and properties of the peptide-empty class I are still largely unknown. We have investigated the thermal denaturation of the murine class I allotypes H-2D(b) and H-2K(b) through the fluorescence of their intrinsic tryptophans, and we find that it occurs via an empty form that can also be produced by folding denatured recombinant class I molecules. It rapidly binds exogenous peptides. Our data demonstrate that the empty form of class I is a distinct conformational state with at least transient stability. (c) 2013 Elsevier Ltd. All rights reserved.
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