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Characterization of the MurT/GatD complex in Mycobacterium tuberculosis towards validating a novel anti-tubercular drug target

Maitra, A; Nukala, S; Dickman, R; Martin, LT; Munshi, T; Gupta, A; Shepherd, AJ; ... Bhakta, S; + view all (2021) Characterization of the MurT/GatD complex in Mycobacterium tuberculosis towards validating a novel anti-tubercular drug target. JAC-Antimicrobial Resistance , 3 (1) 10.1093/jacamr/dlab028. (In press). Green open access

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Abstract

OBJECTIVES: Identification and validation of novel therapeutic targets is imperative to tackle the rise of drug resistance in tuberculosis. An essential Mur ligase-like gene (Rv3712), expected to be involved in cell-wall peptidoglycan (PG) biogenesis and conserved across mycobacteria, including the genetically depleted Mycobacterium leprae, was the primary focus of this study. METHODS: Biochemical analysis of Rv3712 was performed using inorganic phosphate release assays. The operon structure was identified using reverse-transcriptase PCR and a transcription/translation fusion vector. In vivo mycobacterial protein fragment complementation assays helped generate the interactome. RESULTS: Rv3712 was found to be an ATPase. Characterization of its operon revealed a mycobacteria-specific promoter driving the co-transcription of Rv3712 and Rv3713. The two gene products were found to interact with each other in vivo. Sequence-based functional assignments reveal that Rv3712 and Rv3713 are likely to be the mycobacterial PG precursor-modifying enzymes MurT and GatD, respectively. An in vivo network involving Mtb-MurT, regulatory proteins and cell division proteins was also identified. CONCLUSIONS: Understanding the role of the enzyme complex in the context of PG metabolism and cell division, and the implications for antimicrobial resistance and host immune responses will facilitate the design of therapeutics that are targeted specifically to M. tuberculosis.

Type: Article
Title: Characterization of the MurT/GatD complex in Mycobacterium tuberculosis towards validating a novel anti-tubercular drug target
Open access status: An open access version is available from UCL Discovery
DOI: 10.1093/jacamr/dlab028
Publisher version: https://doi.org/10.1093/jacamr/dlab028
Language: English
Additional information: © The Author(s) 2021. Published by Oxford University Press on behalf of the British Society for Antimicrobial Chemotherapy. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Structural and Molecular Biology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > UCL School of Pharmacy
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > UCL School of Pharmacy > Pharma and Bio Chemistry
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL GOS Institute of Child Health
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL GOS Institute of Child Health > Infection, Immunity and Inflammation Dept
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10124319
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