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The Dieckmann condensation, where a molecule with two ester groups reacts intramolecularly, forming a cyclic β-keto ester. In this case, the ring formed must not be strained, usually a 5- or 6-membered chain or ring. Retro-Claisen condensation is the reverse of the title reaction, i.e., the base-induced cleavage of 2-ketoesters
ATP citrate lyase catalyses the Mg.ATP-dependent, CoA-dependent cleavage of citrate into oxaloacetate and acetyl-CoA, a key step in the reductive tricarboxylic acid pathway of CO 2 assimilation used by a variety of autotrophic bacteria and archaea to fix carbon dioxide. [4] ATP citrate lyase is composed of two distinct subunits.
Oxaloacetic acid (also known as oxalacetic acid or OAA) is a crystalline organic compound with the chemical formula HO 2 CC(O)CH 2 CO 2 H. Oxaloacetic acid, in the form of its conjugate base oxaloacetate, is a metabolic intermediate in many processes that occur in animals.
They generally form by the Claisen condensation. The presence of the keto group at the beta position allows them to easily undergo thermal decarboxylation. [7] Gamma-keto acids, Gamma-ketoacids, or 4-oxoacids have the ketone group at the third carbon from the carboxylic acid. Levulinic acid is an example.
Citrate synthase has three key amino acids in its active site (known as the catalytic triad) which catalyze the conversion of acetyl-CoA [H 3 CC(=O)−SCoA] and oxaloacetate [− O 2 CCH 2 C(=O)CO 2 −] into citrate [− O 2 CCH 2 C(OH)(CO 2 −)CH 2 CO 2 −] and H−SCoA in an aldol condensation reaction. The citrate product is said to be ...
Doctors and specialists at the Murdoch Children's Research Institute in Melbourne, Australia, are studying and reprogramming the potential of the blood to treat heart failure in children.
Amanda explains what Wesley was doing in the caption, "In the scene, the actor is to check a notification on his phone. Each time the actor tried to look at his phone, Wesley thought he was taking ...
Idealized scheme showing condensation of two amino acids to give a peptide bond. Many variations of condensation reactions exist. Common examples include the aldol condensation and the Knoevenagel condensation , which both form water as a by-product, as well as the Claisen condensation and the Dieckman condensation (intramolecular Claisen ...