HGNC ID Approved symbol Approved name Status Locus type Previous symbols Alias symbols Chromosome NCBI Gene ID Ensembl gene ID Vega gene ID Group ID Group name HGNC:6936 MCCC1 methylcrotonyl-CoA carboxylase subunit 1 Approved gene with protein product MCCA, MCCCα 3q27.1 56922 ENSG00000078070 OTTHUMG00000158355 2047 Methylcrotonyl-CoA carboxylase subunits HGNC:6937 MCCC2 methylcrotonyl-CoA carboxylase subunit 2 Approved gene with protein product MCCB, MCCCβ 5q13.2 64087 ENSG00000131844 OTTHUMG00000162505 2047 Methylcrotonyl-CoA carboxylase subunits