10255-67-1

Sodium Mercaptopyruvate functions as a sulfur donor substrate in living systems. Generated from cysteine transamination. It as an intermediate in the metabolism of cysteine.

Metabolite in cysteine and methionine metabolism, important intermediate in the mercaptopyruvate pathway, in which cysteine or aspartate transaminase catalyzes the transamination from cysteine to 3-mercaptopyruvate and then 3-mercaptopyruvate sulfurtransferase catalyzes the transsulfuration from 3-mercaptopyruvate to pyruvate, a process contributing to maintain the cellular redox status. It is a substrate for L-lactate dehydrogenase A chain, 3-mercaptopyruvate sulfurtransferase, Aspartate aminotransferase (mitochondrial), L-lactate dehydrogenase C chain, L-lactate dehydrogenase A-like 6A, Aspartate aminotransferase (cytoplasmic), L-lactate dehydrogenase B chain and L-lactate dehydrogenase A-like 6B.