Competitions for tyrosine breakdown: In synthetic microbial communities and between a gut microbial pathway and a human pathway
Mitchem, M.; Pauling, C. W.; Shah, D. D.
Show abstract
Tyrosine, a versatile amino acid that undergoes diverse transformations to produce both beneficial and detrimental metabolites. The modulation of these metabolites results from direct competition among different metabolic pathways responsible for the breakdown of tyrosine whether it be the competition between distinct microbes or the rivalry between a microbe and its host. The fight between microbes for the available tyrosine might drive potential changes to the communities present in various environments. In contrast, if the similar contest for tyrosine is presented between a gut microbial pathway and a human pathway, it can hold potential to affect the human health. In this work, we present various metabolic outcomes of tyrosine within synthetic microbial communities which are prominently driven by specific enzyme activities of tyrosine breakdown pathways. Additionally, we developed a metabolic diversion of the human tyrosine breakdown pathway facilitated by a gut microbial enzyme. This approach holds promise as a novel strategy to develop potential therapeutic interventions in future for addressing metabolic disorders like tyrosinemias (I, II, III), hawkinsinuria, and alkaptonuria, associated with the human tyrosine breakdown pathway.
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