4CVU

Structure of Fungal beta-mannosidase from Glycoside Hydrolase Family 2 of Trichoderma harzianum

4CVU の概要

• エントリーDOI: 10.2210/pdb4cvu/pdb
• 関連するPDBエントリー: 4UOJ
• 分子名称: BETA-MANNOSIDASE, DI(HYDROXYETHYL)ETHER, CALCIUM ION, ... (13 entities in total)
• 機能のキーワード: hydrolase
• 由来する生物種: TRICHODERMA HARZIANUM
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 114394.12

構造登録者

Muniz, J.R.C.,Aparicio, R.,Santos, J.C.,Nascimento, A.S.,Golubev, A.M.,Polikarpov, I. (登録日: 2014-03-31, 公開日: 2014-07-09, 最終更新日: 2024-11-20)

主引用文献

Nascimento, A.S.,Muniz, J.R.,Aparicio, R.,Golubev, A.M.,Polikarpov, I.
Insights into the structure and function of fungal beta-mannosidases from glycoside hydrolase family 2 based on multiple crystal structures of the Trichoderma harzianum enzyme.
FEBS J., 281:4165-4178, 2014

PubMed Abstract: Hemicellulose is an important part of the plant cell wall biomass, and is relevant to cellulosic ethanol technologies. β-Mannosidases are enzymes capable of cleaving nonreducing residues of β-d-mannose from β-d-mannosides and hemicellulose mannose-containing polysaccharides, such as mannans and galactomannans. β-Mannosidases are distributed between glycoside hydrolase (GH) families 1, 2, and 5, and only a handful of the enzymes have been structurally characterized to date. The only published X-ray structure of a GH family 2 mannosidase is that of the bacterial Bacteroides thetaiotaomicron enzyme. No structures of eukaryotic mannosidases of this family are currently available. To fill this gap, we set out to solve the structure of Trichoderma harzianum GH family 2 β-mannosidase and to refine it to 1.9-Å resolution. Structural comparisons of the T. harzianum GH2 β-mannosidase highlight similarities in its structural architecture with other members of GH family 2, reveal the molecular mechanism of β-mannoside binding and recognition, and shed light on its putative galactomannan-binding site.

PubMed: 24975648
DOI: 10.1111/febs.12894

実験手法

X-RAY DIFFRACTION (1.9 Å)