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Overproduction, purification, crystallization and preliminary X-ray characterization of the family 46 carbohydrate-binding module (CBM46) of endo-β-1,4-glucanase B (CelB) from Bacillus halodurans.
- Source :
- Acta Crystallographica: Section F, Structural Biology Communications; Jun2014, Vol. 70 Issue 6, p754-757, 4p
- Publication Year :
- 2014
-
Abstract
- Plant cell-wall polysaccharides offer an abundant energy source utilized by many microorganisms, thus playing a central role in carbon recycling. Aerobic microorganisms secrete carbohydrate-active enzymes (CAZymes) that catabolize this composite structure, comprising cellulose, hemicellulose and lignin, into simple compounds such as glucose. Carbohydrate-binding modules (CBMs) enhance the efficacy of associated CAZYmes. They are organized into families based on primary-sequence homology. CBM family 46 contains more than 40 different members, but has yet to be fully characterized. Here, a recombinant derivative of the C-terminal family 46 CBM module ( BhCBM46) of Bacillus halodurans endo-β-1,4-glucanase B (CelB) was overexpressed in Escherichia coli and purified by immobilized metal-ion affinity chromatography. Preliminary structural characterization was carried out on BhCBM46 crystallized in different conditions. The crystals of BhCBM46 belonged to the tetragonal space group I4<subscript>1</subscript>22. Data were collected for the native form and a selenomethionine derivative to 2.46 and 2.3 Å resolution, respectively. The BhCBM46 structure was determined by a single-wavelength anomalous dispersion experiment using AutoSol from the PHENIX suite. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 2053230X
- Volume :
- 70
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Acta Crystallographica: Section F, Structural Biology Communications
- Publication Type :
- Academic Journal
- Accession number :
- 96408480
- Full Text :
- https://doi.org/10.1107/S2053230X14008395