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Coenzyme A biosynthesis in Bacillus subtilis: Discovery of a novel precursor metabolite for salvage and its uptake system
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Coenzyme A biosynthesis in Bacillus subtilis: Discovery of a novel precursor metabolite for salvage and its uptake system
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Paper
Coenzyme A biosynthesis in Bacillus subtilis: Discovery of a novel precursor metabolite for salvage and its uptake system
2024
Overview
The Gram-positive model bacterium Bacillus subtilis is used for many biotechnological applications, including the large-scale production of vitamins. For vitamin B5, a precursor for coenzyme A synthesis, there is so far no established fermentation process available, partly due to the incomplete knowledge on the metabolic pathways that involve this vitamin. In this study, we have elucidated the complete pathways for the biosynthesis pantothenate and coenzyme A in B. subtilis. We have identified the enzymes involved in the pathway and have identified a salvage pathway for coenzyme A acquisition that acts on complex medium even in the absence of pantothenate synthesis. This pathway requires rewiring of sulfur metabolism resulting in the expression of a cysteine transporter. In the salvage pathway, the bacteria import cysteinopantetheine, a novel naturally occurring metabolite, using the cystine transport system TcyJKLMN. This work lays the foundation for the development of effective processes for vitamin B5 production.
Publisher
Cold Spring Harbor Laboratory
Subject
