Deciphering the Non-Equivalence of Serine and Threonine O-Glycosylation Points: Implications for Molecular Recognition of the Tn Antigen by an Anti-Muc1 Antibody.
Martinez-Saez, N., Castro-Lopez, J., Valero-Gonzalez, J., Madariaga, D., Companon, I., Somovilla, V.J., Salvado, M., Asensio, J.L., Jimenez-Barbero, J., Avenoza, A., Busto, J.H., Bernardes, G.J.L., Peregrina, J.M., Hurtado-Guerrero, R., Corzana, F.(2015) Angew Chem Int Ed Engl 54: 9830
- PubMed: 26118689 
- DOI: 10.1002/anie.201502813
- Primary Citation of Related Structures:  
5A2I, 5A2K, 5A2J, 5A2L - PubMed Abstract: 
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 ...