2P34

Crystal structure of a lectin from Canavalia maritima seeds (CML) in complex with man1-4man-OMe

2P34 の概要

• エントリーDOI: 10.2210/pdb2p34/pdb
• 分子名称: Lectin, alpha-D-mannopyranose-(1-4)-methyl alpha-D-mannopyranoside, MANGANESE (II) ION, ... (5 entities in total)
• 機能のキーワード: canavalia maritima lectin, dimannoside, plant protein
• 由来する生物種: Canavalia maritima
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 103782.14

構造登録者

Moreno, F.B.M.B.,Bezerra, G.A.,Oliveira, T.M.,Souza, E.P.,Rocha, B.A.M.,Benevides, R.G.,Delatorre, P.,Cavada, B.S.,de Azevedo Jr., W. (登録日: 2007-03-08, 公開日: 2008-01-22, 最終更新日: 2024-02-21)

主引用文献

Bezerra, G.A.,Oliveira, T.M.,Moreno, F.B.M.B.,de Souza, E.P.,da Rocha, B.A.M.,Benevides, R.G.,Delatorre, P.,de Azevedo Jr., W.F.,Cavada, B.S.
Structural analysis of Canavalia maritima and Canavalia gladiata lectins complexed with different dimannosides: new insights into the understanding of the structure-biological activity relationship in legume lectins.
J.Struct.Biol., 160:168-176, 2007

PubMed Abstract: Plant lectins, especially those purified from species of the Leguminosae family, represent the best studied group of carbohydrate-binding proteins. The legume lectins from Diocleinae subtribe are highly similar proteins that present significant differences in the potency/efficacy of their biological activities. The structural studies of the interactions between lectins and sugars may clarify the origin of the distinct biological activities observed in this high similar class of proteins. In this way, this work presents a crystallographic study of the ConM and CGL (agglutinins from Canavalia maritima and Canavalia gladiata, respectively) in the following complexes: ConM/CGL:Man(alpha1-2)Man(alpha1-O)Me, ConM/CGL:Man(alpha1-3)Man(alpha1-O)Me and ConM/CGL:Man(alpha1-4)Man(alpha1-O)Me, which crystallized in different conditions and space group from the native proteins. The structures were solved by molecular replacement, presenting satisfactory values for R(factor) and R(free). Comparisons between ConM, CGL and ConA (Canavalia ensiformis lectin) binding mode with the dimannosides in subject, presented different interactions patterns, which may account for a structural explanation of the distincts biological properties observed in the lectins of Diocleinae subtribe.

PubMed: 17881248
DOI: 10.1016/j.jsb.2007.07.012

実験手法

X-RAY DIFFRACTION (2.1 Å)