This gene encodes the small subunit of 3-methylcrotonyl-CoA carboxylase. This enzyme functions as a heterodimer and catalyzes the carboxylation of 3-methylcrotonyl-CoA to form 3-methylglutaconyl-CoA. Mutations in this gene are associated with 3-Methylcrotonylglycinuria, an autosomal recessive disorder of leucine catabolism. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, May 2018]
Forensic Context
A study in humans demonstrated that the MCCC2 is downregulated in the adipose tissue of heavier co-twins within BMI-discordant monozygotic twin pairs, indicating its involvement in mitochondrial metabolism and its association with acquired obesity [van der Kolk et al. DOI:10.1016/j.xcrm.2021.100226]. In rats, the MCCC2 was found to be downregulated in liver tissue on day 1 following a 20% total body surface area burn injury, signifying its role in amino acid catabolism during the metabolic response to trauma [Jayaraman et al. DOI:10.1016/j.jss.2007.05.025].