Synthesis of versatile neuromodulatory molecules by a gut microbial glutamate decarboxylase.
bioRxiv
; 2024 Jun 14.
Article
em En
| MEDLINE
| ID: mdl-38915512
ABSTRACT
Dysbiosis of the microbiome correlates with many neurological disorders, yet very little is known about the chemistry that controls the production of neuromodulatory molecules by gut microbes. Here, we found that an enzyme glutamate decarboxylase (BfGAD) of a gut microbe Bacteroides fragilis forms multiple neuromodulatory molecules such as γ-aminobutyric acid (GABA), hypotaurine, taurine, homotaurine, and ß-alanine. We evolved BfGAD and doubled its taurine productivity. Additionally, we increased its specificity towards the substrate L-glutamate. Here, we provide a chemical strategy via which the BfGAD activity could be fine-tuned. In future, this strategy could be used to modulate the production of neuromodulatory molecules by gut microbes.
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MEDLINE
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En
Ano de publicação:
2024
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Article