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Carbonyl Stress in Bacteria: Causes and Consequences

O V Kosmachevskaya1, K B Shumaev, A F Topunov

  • 1Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, 119071, Russia. aftopunov@yandex.ru.

Biochemistry. Biokhimiia
|February 16, 2016
PubMed

Insights

This review details methylglyoxal (MG) synthesis in prokaryotes, linking its accumulation to carbonyl stress. Understanding these pathways aids in evolutionary biology and developing better bacterial producer strains.

Area of Science:

  • Microbiology
  • Biochemistry
  • Metabolic Engineering

Background:

  • Methylglyoxal (MG) is an alpha-reactive carbonyl compound implicated in cellular stress.
  • Prokaryotic MG synthesis pathways share similarities with eukaryotes but include unique reactions like the methylglyoxal synthase reaction.
  • MG accumulation contributes to carbonyl stress, impacting cellular functions.

Purpose of the Study:

  • To review the pathways of methylglyoxal (MG) synthesis in prokaryotes.
  • To explore the role of MG in carbonyl stress and bacterial population dynamics.
  • To highlight the relevance of MG metabolism for evolutionary biology and strain development.

Main Methods:

  • Literature review of prokaryotic methylglyoxal synthesis pathways.
  • Analysis of the methylglyoxal shunt as an alternative glucose catabolism route.
  • Examination of the glyoxalase system's role in methylglyoxal detoxification.

Main Results:

  • Identified prokaryote-specific MG synthesis reactions, such as the methylglyoxal synthase reaction.
  • Described the MG shunt as an ATP-independent glucose catabolism pathway.
  • Linked MG metabolism to phenotypic polymorphism and hyperpersistence in bacterial populations.

Conclusions:

  • The methylglyoxal shunt and related pathways can be utilized by cells to stabilize energetic status, even in violation of metabolic regulation.
  • Studying carbonyl stress offers insights into evolutionary biology.
  • Understanding MG metabolism is valuable for engineering highly effective bacterial producer strains.

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