Anti-methylcrotonoyl-CoA carboxylase 1 (alpha) antibodies enable researchers to detect and measure the methylcrotonoyl-CoA carboxylase 1 (alpha) antigen in biological samples. This target is a reported synonym of the MCCC1 gene, which encodes methylcrotonyl-CoA carboxylase subunit 1. This protein is known to function in metabolic processes, among other biological roles. The human version of methylcrotonoyl-CoA carboxylase 1 (alpha) has a canonical amino acid length of 725 residues and a protein mass of 80.5 kilodaltons. It is reported to be localized in the mitochondria of cells and widely expressed in many tissue types. Other names for this target antigen include methylcrotonoyl-CoA carboxylase subunit alpha, mitochondrial, 3-methylcrotonyl-CoA carboxylase 1, and 3-methylcrotonyl-CoA carboxylase biotin-containing subunit.