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Monu, Laxman S Meena
Discovery of novel secreted enzymes and proteins in Mycobacterium tuberculosis (M. tuberculosis) are imperative to understanding the pathogenic system for pathogenesis requires attention. Till date, the groups of these secreted enzymes are not meaningfully characterized in terms of M. tuberculosis. In this way, cutinase, a small lipolytic protein, exists in both bacteria and fungi as well which have a potential catalytic activity. During our search, we have found a few genes of M. tuberculosis demonstrating a same significant lipase action as fungi Fusarium solani cutinase contain...
April 2016: Applied Biochemistry and Biotechnology
Parameswaran Saravanan, Hindupur Avinash, Vikash Kumar Dubey, Sanjukta Patra
Cell wall and lipid metabolism plays a vital role in the survival and infection of Mycobacterium tuberculosis. Increase in the incidences of life-threatening multidrug-resistant (MDR) and extreme drug-resistant (XDR) tuberculosis worsens the existing scenario and urge the need of new druggable targets and new drugs. Targeting Rv3802c, an essential cell wall lipase, can open up a new arsenal to fight the dreadful opportunistic pathogen. Our current study highlights the essentiality of Rv3802c. Its 3D structure is predicted for the first time which provides insight in identifying the ligand binding sites...
September 2012: Journal of Molecular Graphics & Modelling
Nicholas P West, Katie M Cergol, Millie Xue, Elizabeth J Randall, Warwick J Britton, Richard J Payne
The first targeted inhibitors of an essential M. tuberculosis cell wall lipase, Rv3802c, are described. Lead compounds exhibited nanomolar inhibition of the enzyme, and encouraging antibacterial activity against M. tuberculosis in vitro, supporting Rv3802c as a novel TB drug target.
May 14, 2011: Chemical Communications: Chem Comm
Paul K Crellin, Julian P Vivian, Judith Scoble, Frances M Chow, Nicholas P West, Rajini Brammananth, Nicholas I Proellocks, Adam Shahine, Jerome Le Nours, Matthew C J Wilce, Warwick J Britton, Ross L Coppel, Jamie Rossjohn, Travis Beddoe
The highly complex and unique mycobacterial cell wall is critical to the survival of Mycobacteria in host cells. However, the biosynthetic pathways responsible for its synthesis are, in general, incompletely characterized. Rv3802c from Mycobacterium tuberculosis is a partially characterized phospholipase/thioesterase encoded within a genetic cluster dedicated to the synthesis of core structures of the mycobacterial cell wall, including mycolic acids and arabinogalactan. Enzymatic assays performed with purified recombinant proteins Rv3802c and its close homologs from Mycobacterium smegmatis (MSMEG_6394) and Corynebacterium glutamicum (NCgl2775) show that they all have significant lipase activities that are inhibited by tetrahydrolipstatin, an anti-obesity drug that coincidently inhibits mycobacterial cell wall biosynthesis...
September 24, 2010: Journal of Biological Chemistry
Xavier Meniche, Cécile Labarre, Célia de Sousa-d'Auria, Emilie Huc, Françoise Laval, Marielle Tropis, Nicolas Bayan, Damien Portevin, Christophe Guilhot, Mamadou Daffé, Christine Houssin
Corynebacterineae are gram-positive bacteria that possess a true outer membrane composed of mycolic acids and other lipids. Little is known concerning the modulation of mycolic acid composition and content in response to changes in the bacterial environment, especially temperature variations. To address this question, we investigated the function of the Rv3802c gene, a gene conserved in Corynebacterineae and located within a gene cluster involved in mycolic acid biosynthesis. We showed that the Rv3802 ortholog is essential in Mycobacterium smegmatis, while its Corynebacterium glutamicum ortholog, NCgl2775, is not...
December 2009: Journal of Bacteriology
Sarah K Parker, Robert M Barkley, John G Rino, Michael L Vasil
The cell wall of M. tuberculosis is central to its success as a pathogen. Mycolic acids are key components of this cell wall. The genes involved in joining the alpha and mero mycolates are located in a cluster, beginning with Rv3799c and extending at least until Rv3804c. The role of each enzyme encoded by these five genes is fairly well understood, except for Rv3802c. Rv3802 is one of seven putative cutinases encoded by the genome of M. tuberculosis. In phytopathogens, cutinases hydrolyze the waxy layer of plants, cutin...
2009: PloS One
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