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Purification, crystallization and crystallographic analysis of Clostridium thermocellum endo-1,4-beta-D-xylanase 10B in complex with xylohexaose.

ABSTRACT: The cellulosome of Clostridium thermocellum is a highly organized multi-enzyme complex of cellulases and hemicellulases involved in the hydrolysis of plant cell-wall polysaccharides. The bifunctional multi-modular xylanase Xyn10B is one of the hemicellulase components of the C. thermocellum cellulosome. The enzyme contains an internal glycoside hydrolase family 10 catalytic domain (GH10) and a C-terminal family 1 carbohydrate esterase domain (CE1). The N-terminal moiety of Xyn10B (residues 32-551), comprising a carbohydrate-binding module (CBM22-1) and the GH10 E337A mutant, was crystallized in complex with xylohexaose. The crystals belong to the trigonal space group P3(2)21 and contain a dimer in the asymmetric unit. The crystals diffracted to beyond 2.0 A resolution.

SUBMITTER: Najmudin S 

PROVIDER: S-EPMC2494957 | biostudies-literature | 2008 Aug

REPOSITORIES: biostudies-literature

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Purification, crystallization and crystallographic analysis of Clostridium thermocellum endo-1,4-beta-D-xylanase 10B in complex with xylohexaose.

Najmudin Shabir S   Pinheiro Benedita A BA   Romão Maria J MJ   Prates José A M JA   Fontes Carlos M G A CM  

Acta crystallographica. Section F, Structural biology and crystallization communications 20080705 Pt 8

The cellulosome of Clostridium thermocellum is a highly organized multi-enzyme complex of cellulases and hemicellulases involved in the hydrolysis of plant cell-wall polysaccharides. The bifunctional multi-modular xylanase Xyn10B is one of the hemicellulase components of the C. thermocellum cellulosome. The enzyme contains an internal glycoside hydrolase family 10 catalytic domain (GH10) and a C-terminal family 1 carbohydrate esterase domain (CE1). The N-terminal moiety of Xyn10B (residues 32-55  ...[more]

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