Počet záznamů: 1
Monoclonal antibodies specific for the empty conformation of HLA-DR1 reveal aspects of the conformational change associated with peptide binding
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SYSNO ASEP 0105351 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Monoclonal antibodies specific for the empty conformation of HLA-DR1 reveal aspects of the conformational change associated with peptide binding Překlad názvu Monoklonální protilátky specifické pro prázdnou konformaci HLA-DR1 ukazují aspekty konformační změny spojené s vazbou peptidů Tvůrce(i) Carven, G. J. (US)
Chitta, S. (US)
Hilgert, Ivan (UMG-J)
Rushe, M. M. (US)
Baggio, R. F. (US)
Palmer, M. (US)
Arenas, J. E. (US)
Strominger, J. L. (US)
Hořejší, Václav (UMG-J) RID
Santambrogio, L. (US)
Stern, L. J. (US)Zdroj.dok. Journal of Biological Chemistry. - : Elsevier - ISSN 0021-9258
Roč. 279, č. 16 (2004), s. 16561-16570Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova immunoreceptor ; signalling Vědní obor RIV EC - Imunologie CEP LN00A026 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy CEZ AV0Z5052915 - UMG-J Anotace Class II major histocompatibility complex (MHC) proteins bind peptides and present them at the cell surface for interaction with CD4+ T cells as part of the system by which the immune system surveys the body for signs of infection. Peptide binding is known to induce conformational changes in class II MHC proteins on the basis of a variety of hydrodynamic and spectroscopic approaches, but the changes have not been clearly localized within the overall class II MHC structure. To map the peptide-induced conformational change for HLA-DR1, a common human class II MHC variant, we generated a series of monoclonal antibodies recognizing the beta subunit that are specific for the empty conformation. Each antibody reacted with the empty but not the peptide-loaded form, for both soluble recombinant protein and native protein expressed at the cell surface. Antibody binding epitopes were characterized using overlapping peptides and alanine scanning substitutions and were localized to two distinct regions of the protein. The pattern of key residues within the epitopes suggested that the two epitope regions undergo substantial conformational alteration during peptide binding. These results illuminate aspects of the structure of the empty forms and the nature of the peptide-induced conformational change Pracoviště Ústav molekulární genetiky Kontakt Nikol Škňouřilová, nikol.sknourilova@img.cas.cz, Tel.: 241 063 217 Rok sběru 2005
Počet záznamů: 1