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Acetoacetyl-CoA - Wikipedia It is created from acetyl-CoA, a thioester, which reacts with the enolate of a second molecule of acetyl-CoA in a Claisen condensation reaction, [2] and it is acted upon by HMG-CoA synthase to form HMG-CoA [1]
6. 7: Acetyl-CoA Metabolism - Biology LibreTexts Each of these starts by combining two acetyl-CoAs together to make acetoacetyl-CoA Not coincidentally, that is the next to last product of oxidation of fatty acids with even numbers of carbons In fact, the enzyme that catalyzes the joining is the same as the one that catalyzes its breakage in fatty acid oxidation – thiolase
Acetyl-CoA Acetyltransferase - an overview - ScienceDirect In the MVA pathway, ACT (EC 2 3 1 9) catalyzes the carbon-carbon bond formation by the condensation of two acetyl-CoA molecules to acetoacetyl CoA The reaction catalyzed by ACT is a two-step process
ENZYME - 2. 3. 1. 9 acetyl-CoA C-acetyltransferase - Expasy The enzyme, found in both eukaryotes and prokaryotes, catalyzes the Claisen condensation of an acetyl-CoA and an acyl-CoA (often another acetyl-CoA), leading to the formation of an acyl-CoA that is longer by two carbon atoms
The Synthesis and Utilization of Ketone bodies Ketone bodies are synthesized from acetyl-CoA in liver mitochondria by a short pathway beginning with thiolase One control for the production of ketone bodies is the fact that high levels of acetyl-CoA favor the thiolase condensation reaction that forms acetoacetyl-CoA, rather than the thiolase cleavage reaction that produces additional acetyl
15. 10. 2: Acetyl-CoA Metabolism - Chemistry LibreTexts Each of these starts by combining two acetyl-CoAs together to make acetoacetyl-CoA Not coincidentally, that is the next to last product of oxidation of fatty acids with even numbers of carbons In fact, the enzyme that catalyzes the joining is the same as the one that catalyzes its breakage in fatty acid oxidation – thiolase
biochemistry - Why cant a third acetyl-CoA condense with acetoacetyl . . . In the biochemical ketogenesis pathway, acetoacetyl-CoA reacts with acetyl-CoA to form HMG-CoA (3-hydroxy-3-methylglutaryl-CoA), in a reaction catalysed by HMG-CoA synthase But why can't acetoacetyl-CoA simply condense with another acetyl-CoA, just like two acetyl-CoAs condensed to form acetoacetyl-CoA in the thiolase reaction?
Acetyl-CoA - Wikipedia CoA is acetylated to acetyl-CoA by the breakdown of carbohydrates through glycolysis and by the breakdown of fatty acids through β-oxidation Acetyl-CoA then enters the citric acid cycle, where the acetyl group is oxidized to carbon dioxide and water, and the energy released is captured in the form of 11 ATP and one GTP per acetyl
Acetoacetyl-CoA - an overview | ScienceDirect Topics The first condensation in the fatty acid biosynthesis is the reaction between acetyl-CoA and malonyl-CoA to form acetoacetyl-CoA, which is reduced to (R)-3-hydroxybutanoyl-CoA