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System for Efficacy and Cytotoxicity Screening of Inhibitors Targeting Intracellular Mycobacterium tuberculosis
09:57

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Published on: April 5, 2017

The Pyridoxal-5'-Phosphate-Dependent Enzymes of Mycobacterium tuberculosis

Alessio Peracchi1, Bienyameen Baker2

  • 1Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma I-43124, Italy.

ACS Infectious Diseases
|January 30, 2026
PubMed

Insights

Pyridoxal 5'-phosphate (PLP)-dependent enzymes are crucial for Mycobacterium tuberculosis survival and pathogenicity. This study catalogs these enzymes, analyzing their roles in metabolism and potential as drug targets for tuberculosis treatment.

Area of Science:

  • Biochemistry
  • Microbiology
  • Enzymology

Background:

  • Pyridoxal 5 -phosphate (PLP) is a vital cofactor for numerous enzymes across all life forms.
  • Tuberculosis (TB) is caused by Mycobacterium tuberculosis, which possesses 45 PLP-dependent enzymes.
  • Many of these enzymes are critical for M. tuberculosis survival, pathogenicity, and are targets of existing drugs like d-cycloserine.

Purpose of the Study:

  • To present and analyze an annotated catalog of PLP-dependent enzymes in M. tuberculosis.
  • To identify key aspects of mycobacterial metabolism reliant on these enzymes.
  • To highlight enzymes with uncertain functions for further research and explore their potential as novel antimycobacterial drug targets.

Main Methods:

  • Bioinformatic analysis of the M. tuberculosis genome to identify PLP-dependent enzymes.
  • Literature review and database mining for existing functional and structural characterizations.
  • Comparative analysis of enzyme roles in mycobacterial metabolism and pathogenicity.

Main Results:

  • A comprehensive catalog of 45 bona fide PLP-dependent enzymes in M. tuberculosis was compiled and analyzed.
  • Key metabolic pathways significantly dependent on PLP-enzymes were identified.
  • Several enzymes with uncharacterized functions were highlighted, alongside an assessment of the therapeutic potential of targeting PLP-dependent enzymes.

Conclusions:

  • PLP-dependent enzymes represent a rich area for understanding M. tuberculosis biology and developing new anti-TB strategies.
  • Further functional characterization of unannotated PLP-enzymes could reveal novel insights into M. tuberculosis pathogenesis.
  • Targeting specific PLP-dependent enzymes holds promise for the development of next-generation antimycobacterial drugs.
Keywords:
Mycobacterium tuberculosisPLPomedrug targetsessential enzymesfunctional annotationsulfur metabolism

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