Thiamine pyrophosphate (TPP) family, ComE and PpyrDC subfamily, TPP-binding module; composed of proteins similar to sulfopyruvate decarboxylase beta subunit (ComE) and phosphonopyruvate decarboxylase (Ppyr decarboxylase). Methanococcus jannaschii sulfopyruvate decarboxylase (ComDE) is a dodecamer of six alpha (D) subunits and six (E) beta subunits which, catalyzes the decarboxylation of sulfopyruvic acid to sulfoacetaldehyde in the coenzyme M pathway. Ppyr decarboxylase is a homotrimeric enzyme which functions in the biosynthesis of C-P compounds such as bialaphos tripeptide in Streptomyces hygroscopicus. Ppyr decarboxylase and ComDE require TPP and divalent metal cation cofactors.
Jiyao W et al.(2023). "The conserved domain database in 2023.",