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

Journal Article · · Acta Crystallographica. Section F
 [1];  [2];  [1];
  1. REQUIMTE, Departamento de Química, FCT-UNL, 2829-516 Caparica (Portugal)
  2. CIISA - Faculdade de Medicina Veterinária, Universidade Técnica de Lisboa, Avenida da Universidade Técnica, 1300-477 Lisboa (Portugal)
The N-terminal moiety of C. thermocellum endo-1,4-β-d-xylanase 10B, comprising a carbohydrate-binding module (CBM22-1) and a GH10 E337A mutant domain, has been crystallized in complex with xylohexaose. The crystals belong to the trigonal space group P3{sub 2}21, contain a dimer in the asymmetric unit and diffract to beyond 2.0 Å resolution. 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{sub 2}21 and contain a dimer in the asymmetric unit. The crystals diffracted to beyond 2.0 Å resolution.
OSTI ID:
22360603
Journal Information:
Acta Crystallographica. Section F, Journal Name: Acta Crystallographica. Section F Journal Issue: Pt 8 Vol. 64; ISSN ACSFCL; ISSN 1744-3091
Country of Publication:
United Kingdom
Language:
English