Humans have evolved a sophisticated trafficking pathway for absorption and utilization of a reactive and less abundant cofactor B12. Methylmalonyl-CoA mutase (MCM) utilizes AdoCbl synthesized by the ATP:cobalamin ...
Hydrogen sulfide (H2S) is a gaseous molecule which can act as an inorganic substrate for
energy production. On the other hand, high concentrations of H2S can act as a poison by
inhibiting cellular respiration, but the ...