Warburg's yellow enzyme
A key respiratory enzyme discovered by the German biochemist Otto Heinrich Warburg (1883-1970), a pioneer in research on the respiration of cells and the metabolism of tumors.
Warburg's yellow enzyme is a flavoprotein that catalyzes an oxidation-reduction reaction.
This reaction is necessary for the cells to normally breathe (respire).</P> Warburg won the Nobel Prize in physiology or medicine in 1931 'for his discovery of the nature and mode of action of the respiratory enzyme.'