1qf3
From Proteopedia
| Line 1: | Line 1: | ||
[[Image:1qf3.jpg|left|200px]] | [[Image:1qf3.jpg|left|200px]] | ||
| - | + | <!-- | |
| - | + | The line below this paragraph, containing "STRUCTURE_1qf3", creates the "Structure Box" on the page. | |
| - | + | You may change the PDB parameter (which sets the PDB file loaded into the applet) | |
| - | + | or the SCENE parameter (which sets the initial scene displayed when the page is loaded), | |
| - | | | + | or leave the SCENE parameter empty for the default display. |
| - | | | + | --> |
| - | + | {{STRUCTURE_1qf3| PDB=1qf3 | SCENE= }} | |
| - | + | ||
| - | + | ||
| - | }} | + | |
'''PEANUT LECTIN COMPLEXED WITH METHYL-BETA-GALACTOSE''' | '''PEANUT LECTIN COMPLEXED WITH METHYL-BETA-GALACTOSE''' | ||
| Line 29: | Line 26: | ||
[[Category: Surolia, A.]] | [[Category: Surolia, A.]] | ||
[[Category: Vijayan, M.]] | [[Category: Vijayan, M.]] | ||
| - | [[Category: | + | [[Category: Carbohydrate specificity]] |
| - | [[Category: | + | [[Category: Lectin]] |
| - | [[Category: | + | [[Category: Legume lectin]] |
| - | [[Category: | + | [[Category: Methyl-beta- galactose]] |
| - | [[Category: | + | [[Category: Water bridge]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:11:22 2008'' | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 03:11, 3 May 2008
PEANUT LECTIN COMPLEXED WITH METHYL-BETA-GALACTOSE
Overview
The crystal structures of complexes of peanut lectin with methyl-beta-galactose and N-acetyllactosamine have been determined at 2.8 and 2.7 A, respectively. These, and the complexes involving lactose and the T-antigenic disaccharide reported previously, permit a detailed characterization of peanut-lectin-carbohydrate association and the role of water molecules therein. The water molecules in the combining site are substantially conserved in the four complexes. The role of interacting sugar hydroxyl groups, when absent, are often mimicked by ordered water molecules not only at the primary combining site, but also at the site of the second sugar ring. The similarity of peanut-lectin-sugar interactions with those in other galactose/N-acetylgalactosamine-specific lectins also extend to a substantial degree to water bridges. The comparative study provides a structural explanation for the exclusive specificity of peanut lectin for galactose at the monosaccharide level, compared with that of the other lectins for galactose as well as N-acetylgalactosamine. The complexes also provide a qualitative structural rationale for differences in the strengths of binding of peanut lectin to different sugars.
About this Structure
1QF3 is a Single protein structure of sequence from Arachis hypogaea. Full crystallographic information is available from OCA.
Reference
Structures of the complexes of peanut lectin with methyl-beta-galactose and N-acetyllactosamine and a comparative study of carbohydrate binding in Gal/GalNAc-specific legume lectins., Ravishankar R, Suguna K, Surolia A, Vijayan M, Acta Crystallogr D Biol Crystallogr. 1999 Aug;55(Pt 8):1375-82. PMID:10417405 Page seeded by OCA on Sat May 3 06:11:22 2008
