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Acetyl-CoA (acetyl coenzyme A) is a molecule that participates in many biochemical reactions in protein, carbohydrate and lipid metabolism. [2] Its main function is to deliver the acetyl group to the citric acid cycle (Krebs cycle) to be oxidized for energy production.
This pathway operates at the interface of central metabolism and specialized metabolite synthesis, playing a crucial role in the synthesis of both primary and secondary metabolites. [ 2 ] [ 3 ] [ 1 ] It begins with acetyl-CoA and involves the stepwise condensation of two-carbon units, typically derived from malonyl-CoA , to form increasingly ...
Formate + Oxalate Formate + Oxalyl-CoA. These reactions have different functions in cells. The reaction involving acetyl-CoA and butyrate (EC 2.8.3.8), for example, forms butyrate during fermentation. [3] The reaction involving acetyl-CoA and succinate (EC 2.8.3.18) is part of a modified TCA cycle [4] or forms acetate during fermentation. [5]
In enzymology, an acetyl-CoA C-acetyltransferase (EC 2.3.1.9) is an enzyme that catalyzes the chemical reaction. 2 acetyl-CoA CoA + acetoacetyl-CoA. Hence, this enzyme has one substrate, acetyl-CoA, and two products, CoA and acetoacetyl-CoA. Acetyl-CoA C-acetyltransferase belongs to the thiolase family of enzymes.
Acetyl-CoA synthetase (ACS) or Acetate—CoA ligase is an enzyme (EC 6.2.1.1) involved in metabolism of acetate. It is in the ligase class of enzymes, meaning that it catalyzes the formation of a new chemical bond between two large molecules.
The starting material is acetyl-CoA. It is a molecule that is involved in ATP synthesis, protein metabolism, and lipid metabolism. [6] As the inner membrane is not permeable to this molecule, acetyl-CoA needs to be converted into other products for effective transport. [7] It is also the first step of the reaction.
It helps regulate anaerobic glucose metabolism. Using radical non-redox chemistry, it catalyzes the reversible conversion of pyruvate and coenzyme-A into formate and acetyl-CoA. The reaction occurs as follows: This enzyme belongs to the family of transferases, specifically those acyltransferases transferring groups other than aminoacyl groups.
Acetyl-CoA acetyltransferase, mitochondrial, also known as acetoacetyl-CoA thiolase, is an enzyme that in humans is encoded by the ACAT1 (Acetyl-Coenzyme A acetyltransferase 1) gene. [ 5 ] Acetyl-Coenzyme A acetyltransferase 1 is an acetyl-CoA C-acetyltransferase enzyme.