Download MendeleyCrystal structure of a lectin from Canavalia maritima (ConM) in complex with trehalose and maltose reveals relevant mutation in ConA-like lectins
Delatorre, P., Rocha, B.A.M., Gadelha, C.A.A., Santi-Gadelha, T., Cajazeiras, J.B., Souza, E.P., Nascimento, K.S., Freire, V.N., Sampaio, A.H., Azevedo Jr., W.F., Cavada, B.S.(2006) J Struct Biol 154: 280-286
- PubMed: 16677825
- DOI: https://doi.org/10.1016/j.jsb.2006.03.011
- Primary Citation of Related Structures:
2CY6, 2CYF - PubMed Abstract:
The crystal structure of Canavalia maritima lectin (ConM) complexed with trehalose and maltose revealed relevant point mutations in ConA-like lectins. ConM with the disaccharides and other ConA-like lectins complexed with carbohydrates demonstrated significant differences in the position of H-bonds. The main difference in the ConM structure is the replacement of Pro202 by Ser202, a residue that promotes the approximation of Tyr12 to the carbohydrate-binding site. The O-6' of the second glucose ring in maltose interacts with Tyr12, while in trehalose the interaction is established by the O-2' and Tyr12, explaining the higher affinity of ConM for disaccharides compared to monosaccharides.
Organizational Affiliation:
Departamento de Bioquímica e Biologia Molecular--Universidade Federal do Ceará, Brazil.
