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Crystallization and preliminary X-ray analysis of Alicyclobacillus acidocaldarius endoglucanase CelA. 2003

Kelvin Eckert, and Heidi A Ernst, and Erwin Schneider, and Sine Larsen, and Leila Lo Leggio
Humboldt Universität zu Berlin, Institut für Biologie, Bakterienphysiologie, Chausseestrasse 117, D-10115 Berlin, Germany.

Crystallization of a family 9 beta-1,4-glucanase from the thermoacidophilic bacterium Alicyclobacillus acidocaldarius CelA is reported. Thin plates can be obtained by hanging-drop vapour-diffusion crystallization in high concentrations (60%) of MPD. These crystals are unusual in that they do not bind the dye IZIT in the mother liquor and do not appear to dissolve in water after three weeks or in the storage buffer after 2 d. The crystals diffract weakly and the diffraction pattern is compatible with crystal disorder in one direction. After testing several crystals at the ESRF beamlines ID14-1 and ID14-2, a crystal was found which gave ordered diffraction in all directions. A full data set was collected to 3.0 A resolution, which allowed unambiguous determination of the space group as P2(1)2(1)2 and the unit-cell parameters as a = 85, b = 129.7, c = 48.6 A. Initial promising results from molecular-replacement searches are reported.

UI MeSH Term Description Entries
D008958 Models, Molecular Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures. Molecular Models,Model, Molecular,Molecular Model
D002480 Cellulase An endocellulase with specificity for the hydrolysis of 1,4-beta-glucosidic linkages in CELLULOSE, lichenin, and cereal beta-glucans. Endo-1,4-beta-Glucanase,Cellulysin,Endoglucanase,Endoglucanase A,Endoglucanase C,Endoglucanase E,Endoglucanase IV,Endoglucanase Y,beta-1,4-Glucan-4-Glucanohydrolase,Endo 1,4 beta Glucanase,beta 1,4 Glucan 4 Glucanohydrolase
D003460 Crystallization The formation of crystalline substances from solutions or melts. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Crystalline Polymorphs,Polymorphism, Crystallization,Crystal Growth,Polymorphic Crystals,Crystal, Polymorphic,Crystalline Polymorph,Crystallization Polymorphism,Crystallization Polymorphisms,Crystals, Polymorphic,Growth, Crystal,Polymorph, Crystalline,Polymorphic Crystal,Polymorphisms, Crystallization,Polymorphs, Crystalline
D003627 Data Interpretation, Statistical Application of statistical procedures to analyze specific observed or assumed facts from a particular study. Data Analysis, Statistical,Data Interpretations, Statistical,Interpretation, Statistical Data,Statistical Data Analysis,Statistical Data Interpretation,Analyses, Statistical Data,Analysis, Statistical Data,Data Analyses, Statistical,Interpretations, Statistical Data,Statistical Data Analyses,Statistical Data Interpretations
D001407 Bacillus A genus of BACILLACEAE that are spore-forming, rod-shaped cells. Most species are saprophytic soil forms with only a few species being pathogenic. Bacillus bacterium
D012984 Software Sequential operating programs and data which instruct the functioning of a digital computer. Computer Programs,Computer Software,Open Source Software,Software Engineering,Software Tools,Computer Applications Software,Computer Programs and Programming,Computer Software Applications,Application, Computer Software,Applications Software, Computer,Applications Softwares, Computer,Applications, Computer Software,Computer Applications Softwares,Computer Program,Computer Software Application,Engineering, Software,Open Source Softwares,Program, Computer,Programs, Computer,Software Application, Computer,Software Applications, Computer,Software Tool,Software, Computer,Software, Computer Applications,Software, Open Source,Softwares, Computer Applications,Softwares, Open Source,Source Software, Open,Source Softwares, Open,Tool, Software,Tools, Software
D018360 Crystallography, X-Ray The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) X-Ray Crystallography,Crystallography, X Ray,Crystallography, Xray,X Ray Crystallography,Xray Crystallography,Crystallographies, X Ray,X Ray Crystallographies

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