6.2.1.13 evolution the enzyme is a member of the NDP-forming acyl-CoA synthetase enzyme superfamily 744911 6.2.1.13 malfunction amoebae lacking enzyme activity are unable to reestablish the acetyl-CoA/CoA ratio after an oxidative stress challenge 744414 6.2.1.13 malfunction gradual ACS gene silencing (49-93%) significantly decreases the acetate flux without affecting the levels of glycolytic metabolites and ATP in trophozoites. Amoebae lacking ACS activity are unable to reestablish the acetyl-CoA/CoA ratio after an oxidative stress challenge 744414 6.2.1.13 metabolism the enzyme is related to the phosphate-dependent fermentative glycolysis in Entamoeba histolytica. The end-products of carbohydrate catabolism in the parasite are ethanol and acetate, produced by the bifunctional aldehyde-alcohol dehydrogenase (ADHE) and ACS, respectively, overview 744414 6.2.1.13 metabolism the main role of the enzyme in the parasite energy metabolism is to recycle CoA for glycolysis to proceed under aerobic conditions 744414 6.2.1.13 additional information residue His252 is essential for enzymatic activity, substrate binding structure and mechanism, overview 744911 6.2.1.13 physiological function Archaeoglobus fulgidus strain 7324 converts starch to acetate via a modified Embden-Meyerhof pathway and acetyl-CoA synthetase (ADP-forming) -, 721449 6.2.1.13 physiological function growth arrest is caused by elevated Acs, EC 6.2.1.1, activity, while overproduction of ADP-forming Ac-CoA synthesizing systems do not affect the growth behaviour of acetylation-deficient or acetylation-proficient strains 716267