Sulfopyruvate decarboxylase (SPDC)

Sulfopyruvate decarboxylase is a thiamine diphosphate-dependent enzyme (EC 4.1.1.79) predominantly found in various bacteria and methanogenic archaea (UniProt, Q9L2F8; BRENDA, EC 4.1.1.79). It catalyzes the decarboxylation of 3-sulfopyruvate into sulfoacetaldehyde and carbon dioxide, a pivotal step in the dissimilatory taurine degradation pathway and the biosynthesis of coenzyme M (Graham et al., 2002, Archives of Microbiology). In the context of the human gut microbiome, this enzyme contributes to the metabolic processing of organosulfonates, potentially influencing the levels of hydrogen sulfide, a metabolite associated with intestinal inflammation and an increased risk of colorectal cancer (Carbonero et al., 2012, Frontiers in Physiology). While it plays a significant role in microbial ecology and sulfur cycling, there are currently no approved drugs or clinical-stage pharmacological agents that target this enzyme in human medicine (PubChem, 2024). Consequently, it is not considered a primary therapeutic target at this time, though it remains a subject of research for its environmental impacts and its role in the gut environment (Ruff et al., 2003, Journal of Bacteriology). Understanding the structural and functional properties of this enzyme is essential for metabolic engineering and for elucidating the interactions between microbial metabolism and host health.

Other names

3-sulfopyruvate decarboxylaseSulfopyruvate carboxy-lyaseComAAlpha-sulfopyruvate decarboxylase

There are no known drugs or therapeutic agents that target sulfopyruvate decarboxylase; therefore, no pharmacological mechanism of action is established.