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Crystallization and preliminary X-ray studies on the core proteins of cellobiohydrolase I and endoglucanase I from Trichoderma reesei. 1993

C Divne, and I Sinning, and J Ståhlberg, and G Pettersson, and M Bailey, and M Siika-aho, and E Margolles-Clark, and T Teeri, and T A Jones
Department of Molecular Biology, Uppsala University Biomedical Centre, Sweden.

The catalytic core domains of cellobiohydrolase I (CBHI) and endoglucanase I (EGI) from Trichoderma reesei have been crystallized using the hanging drop vapour diffusion method. In the case of CBHI, use of polyethylene glycol 20,000, and calcium chloride at low pH produced good quality single crystals suitable for X-ray studies. The crystals belong to a primitive orthorhombic space group with unit cell dimensions a = 84.0 A, b = 86.2 A, c = 111.8 A, and diffract beyond 2.0 A resolution. Bipyramidal crystals of EGI core were grown from ammonium sulphate at pH 7.5. The crystals are tetragonal, either P4(1)22 or the enantiomorph P4(3)22, with cell dimensions a = b = 101.8 A and c = 198.0 A, and at best diffract to a resolution of 2.5 A.

UI MeSH Term Description Entries
D007202 Indicators and Reagents Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant & Hackh's Chemical Dictionary, 5th ed, p301, p499) Indicator,Reagent,Reagents,Indicators,Reagents and Indicators
D011092 Polyethylene Glycols Polymers of ETHYLENE OXIDE and water, and their ethers. They vary in consistency from liquid to solid depending on the molecular weight indicated by a number following the name. They are used as SURFACTANTS, dispersing agents, solvents, ointment and suppository bases, vehicles, and tablet excipients. Some specific groups are NONOXYNOLS, OCTOXYNOLS, and POLOXAMERS. Macrogols,Polyoxyethylenes,Carbowax,Macrogol,Polyethylene Glycol,Polyethylene Oxide,Polyethyleneoxide,Polyglycol,Glycol, Polyethylene,Glycols, Polyethylene,Oxide, Polyethylene,Oxides, Polyethylene,Polyethylene Oxides,Polyethyleneoxides,Polyglycols,Polyoxyethylene
D011487 Protein Conformation The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain). Conformation, Protein,Conformations, Protein,Protein Conformations
D002122 Calcium Chloride A salt used to replenish calcium levels, as an acid-producing diuretic, and as an antidote for magnesium poisoning. Calcium Chloride Dihydrate,Calcium Chloride, Anhydrous
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
D006026 Glycoside Hydrolases Any member of the class of enzymes that catalyze the cleavage of the glycosidic linkage of glycosides and the addition of water to the resulting molecules. Endoglycosidase,Exoglycosidase,Glycohydrolase,Glycosidase,Glycosidases,Glycoside Hydrolase,Endoglycosidases,Exoglycosidases,Glycohydrolases,Hydrolase, Glycoside,Hydrolases, Glycoside
D000645 Ammonium Sulfate Sulfuric acid diammonium salt. It is used in CHEMICAL FRACTIONATION of proteins. Sulfate, Ammonium
D014242 Trichoderma A mitosporic fungal genus frequently found in soil and on wood. It is sometimes used for controlling pathogenic fungi. Its teleomorph is HYPOCREA. Trichodermas
D043366 Cellulose 1,4-beta-Cellobiosidase An exocellulase with specificity for the hydrolysis of 1,4-beta-D-glucosidic linkages in CELLULOSE and cellotetraose. It catalyzes the hydrolysis of terminal non-reducing ends of beta-D-glucosides with release of CELLOBIOSE. Exo-Cellobiohydrolase,1,4-beta-D-Glucan Cellobiohydrolase,Beta-Glucancellobiohydrolase,CEL1 Protein,CbhI Protein,Cellobiohydrolase,Cellobiohydrolase A,Cellobiohydrolase I,Cellobiohydrolase II,Exoglucanase II,1,4 beta D Glucan Cellobiohydrolase,1,4-beta-Cellobiosidase, Cellulose,Beta Glucancellobiohydrolase,Cellobiohydrolase, 1,4-beta-D-Glucan,Cellulose 1,4 beta Cellobiosidase,Exo Cellobiohydrolase
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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