Anaerobic Faecalicatena spp. degrade sulfoquinovose via a bifurcated 6-deoxy-6-sulfofructose transketolase/transaldolase pathway to both C₂- and C₃-sulfonate intermediates.

ABSTRACT: Plant-produced sulfoquinovose (SQ, 6-deoxy-6-sulfoglucose) is one of the most abundant sulfur-containing compounds in nature and its bacterial degradation plays an important role in the biogeochemical sulfur and carbon cycles and in all habitats where SQ is produced and degraded, particularly in gut microbiomes. Here, we report the enrichment and characterization of a strictly anaerobic SQ-degrading bacterial consortium that produces the C₂-sulfonate isethionate (ISE) as the major product but also the C₃-sulfonate 2,3-dihydroxypropanesulfonate (DHPS), with concomitant production of acetate and hydrogen (H₂). In the second step, the ISE was degraded completely to hydrogen sulfide (H₂S) when an additional electron donor (external H₂) was

SUBMITTER: Borusak S 

PROVIDER: S-EPMC11659671 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature