Structural studies on peanut lectin complexed with disaccharides involving different linkages: further insights into the structure and interactions of the lectinNatchiar, S.K., Srinivas, O., Mitra, N., Surolia, A., Jayaraman, N., Vijayan, M.
(2006) Acta Crystallogr D Biol Crystallogr 62: 1413-1421
- PubMed: 17057347
- DOI: 10.1107/S0907444906035712
- Primary Citation of Related Structures:
2DV9, 2DVA, 2DVB, 2DVD, 2DVF, 2DVG
- PubMed Abstract:
- Crystal structure of peanut lectin, a protein with an unusual quaternary structure
Banerjee, R., Mande, S.C., Ganesh, V., Das, K., Dhanaraj, V., Mahanta, S.K., Suguna, K., Surolia, A., Vijayan, M.
(1994) Proc Natl Acad Sci U S A 91: 227
- Conformation, protein-carbohydrate interactions and a novel subunit association in the refined structure of peanut lectin-lactose complex
Banerjee, R., Das, K., Ravishankar, R., Suguna, K., Surolia, A., Vijayan, M.
(1996) J Mol Biol 259: 281
- The Specificity of Peanut Agglutinin for Thomsen-Friedenreich Antigen is Mediated by Water-Bridges
Ravishankar, R., Ravindran, M., Suguna, K., Surolia, A., Vijayan, M.
(1997) Curr Sci 72: 855
- Structural plasticity of peanut lectin: an X-ray analysis involving variation in pH, ligand binding and crystal structure
Natchiar, S.K., Jeyaprakash, A.A., Ramya, T.N., Thomas, C.J., Suguna, K., Surolia, A., Vijayan, M.
(2004) Acta Crystallogr D Biol Crystallogr 60: 211
- Multivalency in Lectins. A Crystallographic Modellin and Light-Scattering Study Involving Peanut Lectin and a Bivalent Ligand
Natchiar, S.K., Srinivas, O., Nivedita, M., Sagarika, D., Jayaraman, N., Surolia, A., Vijayan, M.
(2006) Curr Sci 90: 1230
Crystal structures of peanut lectin complexed with Galbeta1-3Gal, methyl-T-antigen, Galbeta1-6GalNAc, Galalpha1-3Gal and Galalpha1-6Glc and that of a crystal grown in the presence of Galalpha1-3Galbeta1-4Gal have been determined using data collected at 100 K ...
Crystal structures of peanut lectin complexed with Galbeta1-3Gal, methyl-T-antigen, Galbeta1-6GalNAc, Galalpha1-3Gal and Galalpha1-6Glc and that of a crystal grown in the presence of Galalpha1-3Galbeta1-4Gal have been determined using data collected at 100 K. The use of water bridges as a strategy for generating carbohydrate specificity was previously deduced from the complexes of the lectin with lactose (Galbeta1-4Glc) and T-antigen (Galbeta1-3GalNAc). This has been confirmed by the analysis of the complexes with Galbeta1-3Gal and methyl-T-antigen (Galbeta1-3GalNAc-alpha-OMe). A detailed analysis of lectin-sugar interactions in the complexes shows that they are more extensive when the beta-anomer is involved in the linkage. As expected, the second sugar residue is ill-defined when the linkage is 1-->6. There are more than two dozen water molecules which occur in the hydration shells of all structures determined at resolutions better than 2.5 A. Most of them are involved in stabilizing the structure, particularly loops. Water molecules involved in lectin-sugar interactions are also substantially conserved. The lectin molecule is fairly rigid and does not appear to be affected by changes in temperature.
Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India.