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Crystallization and preliminary X-ray analysis of NAD kinase from Mycobacterium tuberculosis H37Rv. 2001

S Mori, and S Kawai, and B Mikami, and K Murata
Department of Basic and Applied Molecular Biotechnology, Graduate School of Kyoto University, Uji, Kyoto 611-0011, Japan.

NAD kinase from Mycobacterium tuberculosis H37Rv utilizes ATP or inorganic polyphosphate [poly(P)] as a phosphoryl donor for the phosphorylation of NAD. The enzyme overexpressed in Escherichia coli was purified and crystallized by means of the hanging-drop vapour-diffusion method with polyethylene glycol 4000 as the precipitant. Preliminary X-ray analysis of the resultant crystals revealed they belonged to the monoclinic space group C2 and had unit-cell parameters a = 140.0, b = 69.3, c = 106.3 A, beta = 130.1 degrees. The molecular weight of the NAD kinase is 35 kDa; assuming that a crystal contains two subunits of the NAD kinase in an asymmetric unit, the solvent content V(sol) is 0.62. X-ray diffraction data to 2.99 A have been collected from the native crystal.

UI MeSH Term Description Entries
D009169 Mycobacterium tuberculosis A species of gram-positive, aerobic bacteria that produces TUBERCULOSIS in humans, other primates, CATTLE; DOGS; and some other animals which have contact with humans. Growth tends to be in serpentine, cordlike masses in which the bacilli show a parallel orientation. Mycobacterium tuberculosis H37Rv
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
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
D017853 Phosphotransferases (Alcohol Group Acceptor) A group of enzymes that transfers a phosphate group onto an alcohol group acceptor. EC 2.7.1.
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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