2CN2

Crystal Structures of Clostridium thermocellum Xyloglucanase

2CN2 の概要

• エントリーDOI: 10.2210/pdb2cn2/pdb
• 関連するPDBエントリー: 2CN3
• 分子名称: BETA-1,4-XYLOGLUCAN HYDROLASE, CADMIUM ION (3 entities in total)
• 機能のキーワード: hydrolase, gh74 family, xyloglucanase, glycosylhydrolase
• 由来する生物種: CLOSTRIDIUM THERMOCELLUM
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 329084.95

構造登録者

Martinez-Fleites, C.,Taylor, E.J.,Guerreiro, C.I.,Prates, J.A.M.,Ferreira, L.M.A.,Fontes, C.M.G.A.,Baumann, M.J.,Brumer, H.,Davies, G.J. (登録日: 2006-05-17, 公開日: 2006-05-22, 最終更新日: 2024-11-06)

主引用文献

Martinez-Fleites, C.,Guerreiro, C.I.,Baumann, M.J.,Taylor, E.J.,Prates, J.A.M.,Ferreira, L.M.A.,Fontes, C.M.G.A.,Brumer, H.,Davies, G.J.
Crystal Structures of Clostridium Thermocellum Xyloglucanase, Xgh74A, Reveal the Structural Basis for Xyloglucan Recognition and Degradation.
J.Biol.Chem., 281:24922-, 2006

PubMed Abstract: The enzymatic degradation of the plant cell wall is central both to the natural carbon cycle and, increasingly, to environmentally friendly routes to biomass conversion, including the production of biofuels. The plant cell wall is a complex composite of cellulose microfibrils embedded in diverse polysaccharides collectively termed hemicelluloses. Xyloglucan is one such polysaccharide whose hydrolysis is catalyzed by diverse xyloglucanases. Here we present the structure of the Clostridium thermocellum xyloglucanase Xgh74A in both apo and ligand-complexed forms. The structures, in combination with mutagenesis data on the catalytic residues and the kinetics and specificity of xyloglucan hydrolysis reveal a complex subsite specificity accommodating seventeen monosaccharide moieties of the multibranched substrate in an open substrate binding terrain.

PubMed: 16772298
DOI: 10.1074/JBC.M603583200

実験手法

X-RAY DIFFRACTION (2.1 Å)