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The biosynthesis of caprazamycins and related liponucleoside antibiotics: new insights

Bertolt Gust1, Kornelia Eitel, Xiaoyu Tang

  • 1Department of Pharmceutical Biology, Pharmaceutical Institute, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany. bertolt.gust@uni-tuebingen.de

Biological Chemistry
|October 30, 2012
PubMed

Insights

Caprazamycins are liponucleoside antibiotics effective against Mycobacterium species. This review compares their biosynthetic gene clusters and explores their complex structures and origins.

Area of Science:

  • Microbiology
  • Biochemistry
  • Synthetic Biology

Background:

  • Peptidoglycan biosynthesis is essential for bacterial cell walls, with MraY translocase catalyzing a key early step.
  • MraY inhibitors, including liponucleosides like caprazamycins, offer potential antibacterial strategies.
  • Caprazamycins exhibit in vitro activity against Gram-positive bacteria, notably Mycobacterium species.

Purpose of the Study:

  • To review and compare the biosynthetic gene clusters of caprazamycins, liposidomycins, and A-90289.
  • To explore the complex structures and origins of these liponucleoside antibiotics.
  • To present emerging information on liponucleoside antibiotic biosynthesis.

Main Methods:

  • Comparative analysis of recently discovered biosynthetic gene clusters.
  • Review of structural composition of caprazamycins, liposidomycins, and A-90289.
  • Integration of data from gene disruption experiments and biochemical investigations.

Main Results:

  • Caprazamycins, liposidomycins, and A-90289 share unique structural moieties derived from 5'-(β-O-aminoribosyl)-glycyluridine.
  • The N,N'-dimethyldiazepanone ring is a characteristic feature of these compounds.
  • Discovery and comparison of the corresponding biosynthetic gene clusters provide insights into their production.

Conclusions:

  • Understanding the biosynthesis of liponucleoside antibiotics is crucial for developing new antibacterial agents.
  • Comparative genomics of biosynthetic gene clusters aids in elucidating antibiotic production pathways.
  • Further research into gene disruption and biochemical studies will refine our knowledge of liponucleoside antibiotic synthesis.

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