3-hydroxy-3-méthylglutaryl-coenzyme A

3-hydroxy-3-méthylglutaryl-coenzyme A
3-hydroxy-3-méthylglutaryl-coenzyme A
(S)-3-Hydroxy-3-methylglutaryl-CoA.svg
Structure de la 3-hydroxy-3-méthylglutaryl-coenzyme A
Général
Synonymes β-hydroxy-β-méthylglutaryl-CoA,
HMG-CoA
No CAS 1553-55-5
No EINECS 216-301-7
PubChem 50986137
SMILES
InChI
Propriétés chimiques
Formule brute C27H44N7O20P3S  [Isomères]
Masse molaire[1] 911,659 ± 0,037 g·mol-1
C 35,57 %, H 4,86 %, N 10,75 %, O 35,1 %, P 10,19 %, S 3,52 %,
Unités du SI & CNTP, sauf indication contraire.

La 3-hydroxy-3-méthylglutaryl-coenzyme A, abrégée en HMG-CoA, est un thioester de la coenzyme A formé avec l'acide 3-hydroxy-3-méthylglutarique (méglutol). Il intervient dans le métabolisme de la leucine à partir de 3-méthylglutaconyl-coenzyme A, ainsi que dans la voie du mévalonate à partir d'acétyl-coenzyme A et d'acétoacétyl-coenzyme A par l'HMG-CoA synthase ; il est ensuite converti en acide mévalonique par l'HMG-CoA réductase.

(en) Réactions de la cétogenèse.

Notes et références

  1. Masse molaire calculée d’après Atomic weights of the elements 2007 sur www.chem.qmul.ac.uk.

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