1.2.1.90 ATP - 4 1.2.1.90 L-Glyceraldehyde 3-phosphate strong competitive inhibitor with respect to D-glyceraldehyde 3-phosphate 6546 1.2.1.90 additional information in contrast to other members of the ALDH superfamily, the enzyme from Thermoproteus tenax is regulated by a number of intermediates and metabolites. In the NAD+-dependent oxidation of D-glyceraldehyde 3-phosphate, ATP, NADP, NADPH and NADH decrease the affinity for the cosubstrate leaving, however, the catalytic rate virtually unaltered 2 1.2.1.90 NADH - 8 1.2.1.90 NADP+ - 10 1.2.1.90 NADPH - 5