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LdtMav2, a nonclassical transpeptidase and susceptibility of Mycobacterium avium to carbapenems.


ABSTRACT: AIM:Mycobacterium avium infections, especially in immune-compromised individuals, present a significant challenge as therapeutic options are limited. In this study, we investigated if M. avium genome encodes nonclassical transpeptidases and if newer carbapenems are effective against this mycobacteria. MATERIALS & METHODS:Biochemical and microbiological approaches were used to identify and characterize a nonclassical transpeptidase, namely L,D-transpeptidase, in M. avium. RESULTS & CONCLUSION:We describe the biochemical and physiological attributes of a L,D-transpeptidase in M. avium, LdtMav2. Suggestive of a constitutive requirement, levels of LdtMav2, a L,D-transpeptidase in M. avium, remain constant during exponential and stationary phases of growth. Among ?-lactam antibacterials, only a subset of carbapenems inhibit LdtMav2 and tebipenem, a new oral carbapenem, inhibits growth of M. avium.

SUBMITTER: Mattoo R 

PROVIDER: S-EPMC5619143 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature

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Ldt<sub>Mav2</sub>, a nonclassical transpeptidase and susceptibility of Mycobacterium avium to carbapenems.

Mattoo Rohini R   Lloyd Evan P EP   Kaushik Amit A   Kumar Pankaj P   Kumar Pankaj P   Brunelle Julie L JL   Townsend Craig A CA   Lamichhane Gyanu G  

Future microbiology 20170530


<h4>Aim</h4>Mycobacterium avium infections, especially in immune-compromised individuals, present a significant challenge as therapeutic options are limited. In this study, we investigated if M. avium genome encodes nonclassical transpeptidases and if newer carbapenems are effective against this mycobacteria.<h4>Materials & methods</h4>Biochemical and microbiological approaches were used to identify and characterize a nonclassical transpeptidase, namely L,D-transpeptidase, in M. avium.<h4>Result  ...[more]

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