Ontology highlight
ABSTRACT:
SUBMITTER: Martinez-Saez N
PROVIDER: S-EPMC4552995 | biostudies-literature | 2015 Aug
REPOSITORIES: biostudies-literature
Martínez-Sáez Nuria N Castro-López Jorge J Valero-González Jessika J Madariaga David D Compañón Ismael I Somovilla Víctor J VJ Salvadó Míriam M Asensio Juan L JL Jiménez-Barbero Jesús J Avenoza Alberto A Busto Jesús H JH Bernardes Gonçalo J L GJ Peregrina Jesús M JM Hurtado-Guerrero Ramón R Corzana Francisco F
Angewandte Chemie (International ed. in English) 20150626 34
The structural features of MUC1-like glycopeptides bearing the Tn antigen (α-O-GalNAc-Ser/Thr) in complex with an anti MUC-1 antibody are reported at atomic resolution. For the α-O-GalNAc-Ser derivative, the glycosidic linkage adopts a high-energy conformation, barely populated in the free state. This unusual structure (also observed in an α-S-GalNAc-Cys mimic) is stabilized by hydrogen bonds between the peptidic fragment and the sugar. The selection of a particular peptide structure by the anti ...[more]