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Aspartate, an amino acid, plays a role in aiding the growth of pathogenic Enterobacteriaceae within the intestinal lumen. This is because the genomes of Salmonella enterica enterica serovar Typhimurium and Escherichia coli (E. coli) contain an enzyme called Aspartate-ammonia lyase. This enzyme facilitates the conversion of aspartate into fumarate, which serves as an alternative electron acceptor. The import of aspartate and malate by DcuABC facilitates H2/fumarate respiration, which aids in the initial …