Molecular characterization of Mycobacterium tuberculosis cystathionine gamma synthase--apo- and holoforms.

作者: Baisakhee Saha , Somnath Mukherjee , Amit Kumar Das

DOI: 10.1016/J.IJBIOMAC.2009.02.007

关键词:

摘要: Multiple probes like absorbance, circular dichroism, fluorescence and biochemical changes have been exploited to understand the role of PLP (pyridoxal 5' phosphate) in guanidine hydrochloride (GdnHCl) mediated unfolding refolding processes cystathionine gamma synthase from Mycobacterium tuberculosis (MtCGS). Unfolding by GdnHCl inactivates enzyme due loss ketoenamine tautomer. Though induces difference secondary structure content, it is unable provide stabilizing effect during overall process. But tertiary stability protein thereby counteracting deleterious denaturant. In silico modelling cofactor docking insights into molecular enzyme.

参考文章(31)
Hideyuki Hayashi, Yasushi Inoue, Seiki Kuramitsu, Yoshimasa Morino, Hiroyuki Kagamiyama, Effects of replacement of tryptophan-140 by phenylalanine or glycine on the function of Escherichia coli aspartate aminotransferase. Biochemical and Biophysical Research Communications. ,vol. 167, pp. 407- 412 ,(1990) , 10.1016/0006-291X(90)92037-Z
Anne H. Datko, John Giovanelli, S. Harvey Mudd, Homocysteine Biosynthesis in Green Plants Journal of Biological Chemistry. ,vol. 249, pp. 1139- 1155 ,(1974) , 10.1016/S0021-9258(19)42953-0
Esen Wooff, Stephen Ll. Michell, Stephen V. Gordon, Mark A. Chambers, Stoyan Bardarov, William R. Jacobs, R. Glyn Hewinson, Paul R. Wheeler, Functional genomics reveals the sole sulphate transporter of the Mycobacterium tuberculosis complex and its relevance to the acquisition of sulphur in vivo Molecular Microbiology. ,vol. 43, pp. 653- 663 ,(2002) , 10.1046/J.1365-2958.2002.02771.X
Stephen Guggenheim, Martin Flavin, Cystathionine γ-Synthase from Salmonella Journal of Biological Chemistry. ,vol. 246, pp. 3562- 3568 ,(1971) , 10.1016/S0021-9258(18)62166-0
Marshall M. Kaplan, Martin Flavin, Cystathionine γ-Synthetase of Salmonella CATALYTIC PROPERTIES OF A NEW ENZYME IN BACTERIAL METHIONINE BIOSYNTHESIS Journal of Biological Chemistry. ,vol. 241, pp. 5781- 5789 ,(1966) , 10.1016/S0021-9258(18)96341-6
Stéphane RAVANEL, Bertrand GAKIÈRE, Dominique JOB, Roland DOUCE, Cystathionine gamma-synthase from Arabidopsis thaliana: purification and biochemical characterization of the recombinant enzyme overexpressed in Escherichia coli. Biochemical Journal. ,vol. 331, pp. 639- 648 ,(1998) , 10.1042/BJ3310639
Roman A. Laskowski, David S. Moss, Janet M. Thornton, Main-chain bond lengths and bond angles in protein structures. Journal of Molecular Biology. ,vol. 231, pp. 1049- 1067 ,(1993) , 10.1006/JMBI.1993.1351
Clemens Steegborn, Bernd Laber, Albrecht Messerschmidt, Robert Huber, Tim Clausen, Crystal structures of cystathionine gamma-synthase inhibitor complexes rationalize the increased affinity of a novel inhibitor. Journal of Molecular Biology. ,vol. 311, pp. 789- 801 ,(2001) , 10.1006/JMBI.2001.4880
Sara Benci, Silvia Vaccari, Andrea Mozzarelli, Paul F. Cook, Time-resolved fluorescence of O-acetylserine sulfhydrylase Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology. ,vol. 1429, pp. 317- 330 ,(1999) , 10.1016/S0167-4838(98)00229-5
Barbara Campanini, Samanta Raboni, Simona Vaccari, Lei Zhang, Paul F. Cook, Theodore L. Hazlett, Andrea Mozzarelli, Stefano Bettati, Surface-exposed Tryptophan Residues Are Essential for O-Acetylserine Sulfhydrylase Structure, Function, and Stability Journal of Biological Chemistry. ,vol. 278, pp. 37511- 37519 ,(2003) , 10.1074/JBC.M305138200