Hydroxymethylglutaryl-CoA lyase, mitochondrial

Definition:

Mitochondrial 3-hydroxymethyl-3-methylglutaryl-CoA lyase that catalyzes a cation-dependent cleavage of (S)-3-hydroxy-3-methylglutaryl-CoA into acetyl-CoA and acetoacetate, a key step in ketogenesis. Terminal step in leucine catabolism. Ketone bodies (beta-hydroxybutyrate, acetoacetate and acetone) are essential as an alternative source of energy to glucose, as lipid precursors and as regulators of metabolism.

References:

[1]. H C Holmes, et al. Ketogenic flux from lipids and leucine, assessment in 3-hydroxy-3-methylglutaryl CoA lyase deficiency. Biochem Soc Trans. 1995 Aug;23(3):489S. [Content Brief]

[2]. María Arnedo, et al. Characterization of a novel HMG-CoA lyase enzyme with a dual location in endoplasmic reticulum and cytosol. J Lipid Res. 2012 Oct;53(10):2046-2056. [Content Brief]

[3]. Christa Montgomery, et al. Identification and characterization of an extramitochondrial human 3-hydroxy-3-methylglutaryl-CoA lyase. J Biol Chem. 2012 Sep 28;287(40):33227-36. [Content Brief]

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