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HMGCL is found on chromosome 1p36.11's short arm and codes for the enzyme 3-hydroxymethyl-3-methylglutaryl-coenzyme A lyase (HMG-CoA lyase). [4] [5] This mitochondrial enzyme contributes to the metabolism of dietary proteins by converting HMG-CoA into acetyl-CoA and acetoacetate, which is the last stage of the breakdown of leucine and fat for ...
Deficiency HMG-CoA lyase deficiency causes hypoketotic hypoglycemia similar to that is caused by HMGCS2 mutations but also leads to organic acid accumulation and metabolic acidosis due to altered leucine metabolism. This disorder can be mistaken for Reye syndrome because of the symptoms of vomiting, lethargy, and convulsions. Ketogenesis
HMG-CoA reductase (3-hydroxy-3-methyl-glutaryl-coenzyme A reductase, official symbol HMGCR) is the rate-controlling enzyme (NADH-dependent, EC 1.1.1.88; NADPH-dependent, EC 1.1.1.34) of the mevalonate pathway, the metabolic pathway that produces cholesterol and other isoprenoids.
The mevalonate pathway of eukaryotes, archaea, and eubacteria all begin the same way. The sole carbon feed stock of the pathway is acetyl-CoA. The first step condenses two acetyl-CoA molecules to yield acetoacetyl-CoA. This is followed by a second condensation to form HMG-CoA (3-hydroxy-3- methyl-glutaryl-CoA). Reduction of HMG-CoA yields (R ...
In biochemistry, hydroxymethylglutaryl-CoA synthase or HMG-CoA synthase EC 2.3.3.10 is an enzyme which catalyzes the reaction in which acetyl-CoA condenses with acetoacetyl-CoA to form 3-hydroxy-3-methylglutaryl-CoA (HMG-CoA). This reaction comprises the second step in the mevalonate-dependent isoprenoid biosynthesis pathway.
2,4 Dienoyl-CoA Reductase Deficiency; Electron Transfer Flavoprotein (ETF) Dehydrogenase Deficiency (GA-II/MADD) 3-Hydroxy-3-methylglutaryl-CoA lyase deficiency (HMG deficiency) Very long-chain acyl-coenzyme A dehydrogenase deficiency (VLCAD deficiency) Long-chain 3-hydroxyacyl-coenzyme A dehydrogenase deficiency (LCHAD deficiency)
β-Hydroxy β-methylglutaryl-CoA (HMG-CoA), also known as 3-hydroxy-3-methylglutaryl coenzyme A, is an intermediate in the mevalonate and ketogenesis pathways. It is formed from acetyl CoA and acetoacetyl CoA by HMG-CoA synthase. The research of Minor J. Coon and Bimal Kumar Bachhawat in the 1950s at University of Illinois led to its discovery ...
2-methylbutyryl-coenzyme A dehydrogenase deficiency, 3-alpha-hydroxyacyl-CoA dehydrogenase deficiency, 3-Methylcrotonyl-CoA carboxylase deficiency, ACAD9 deficiency, Alpers' syndrome, Carbohydrate-deficient glycoprotein syndrome type 1b, Carnitine palmitoyltransferase I deficiency, Carnitine-acylcarnitine translocase deficiency, Cleft lip ...