3-Hydroxymethyl-3-Methylglutaryl-Coa Lyase (HMGCL) Human Recombinant Protein

The protein encoded by this gene belongs to the HMG-CoA lyase family. It is a mitochondrial enzyme that catalyzes the final step of leucine degradation and plays a key role in ketone body formation. Mutations in this gene are associated with HMG-CoA lyase deficiency. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]

HMGCL: Key enzyme in ketogenesis (ketone body formation). Terminal step in leucine catabolism. Defects in HMGCL are the cause of 3-hydroxy-3- methylglutaryl-CoA lyase deficiency (HMGCLD); also known as hydroxymethylglutaricaciduria or HL deficiency. An autosomal recessive disease affecting ketogenesis and L-leucine catabolism. The disease usually appears in the first year of life after a fasting period and its clinical acute symptoms include vomiting, seizures, metabolic acidosis, hypoketotic hypoglycemia and lethargy. These symptoms sometimes progress to coma, with fatal outcome in some cases. Belongs to the HMG-CoA lyase family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: EC 4.1.3.4; Carbohydrate Metabolism - butanoate; Lyase; Mitochondrial; Amino Acid Metabolism - valine, leucine and isoleucine degradation; Lipid Metabolism - synthesis and degradation of ketone bodies

Chromosomal Location of Human Ortholog: 1p36.1-p35

Cellular Component: mitochondrion; mitochondrial matrix; mitochondrial inner membrane; peroxisome

Molecular Function: hydroxymethylglutaryl-CoA lyase activity; protein homodimerization activity; acyl-CoA binding; carboxylic acid binding; manganese ion binding; metal ion binding; magnesium ion binding; receptor binding

Biological Process: response to starvation; mitochondrion organization and biogenesis; leucine catabolic process; acyl-CoA metabolic process; ketone body biosynthetic process; ketone body metabolic process; cellular lipid metabolic process; liver development; response to nutrient; protein tetramerization

Disease: 3-hydroxy-3-methylglutaryl-coa Lyase Deficiency