Download MendeleyX-ray crystal structure of the human galectin-3 carbohydrate recognition domain at 2.1-A resolution.
Seetharaman, J., Kanigsberg, A., Slaaby, R., Leffler, H., Barondes, S.H., Rini, J.M.(1998) J Biol Chem 273: 13047-13052
- PubMed: 9582341
- DOI: https://doi.org/10.1074/jbc.273.21.13047
- Primary Citation of Related Structures:
1A3K - PubMed Abstract:
Galectins are a family of lectins which share similar carbohydrate recognition domains (CRDs) and affinity for small beta-galactosides, but which show significant differences in binding specificity for more complex glycoconjugates. We report here the x-ray crystal structure of the human galectin-3 CRD, in complex with lactose and N-acetyllactosamine, at 2.1-A resolution. This structure represents the first example of a CRD determined from a galectin which does not show the canonical 2-fold symmetric dimer organization. Comparison with the published structures of galectins-1 and -2 provides an explanation for the differences in carbohydrate-binding specificity shown by galectin-3, and for the fact that it fails to form dimers by analogous CRD-CRD interactions.
Organizational Affiliation:
Departments of Molecular and Medical Genetics and Biochemistry, University of Toronto, Toronto, Ontario, M5S 1A8, Canada.
