COXPD1, or G elongation factor, mitochondrial 1, is a human gene encoded by GFM1. It may also be known as: Elongation factor G, mitochondrial; EF-Gmt; Elongation factor G 1, mitochondrial; mEF-G 1; Elongation factor G1; hEFG1; EFG1; EFGM; EGF1; GFM. The encoded protein has an amino acid length of 751 and a mass of 83.5 kDa. Other isoforms may exist. COXPD1 is a member of the TRAFAC class translation factor GTPase superfamily, Classic translation factor GTPase family, EF-G/EF-2 subfamily. Homologs of this gene exist in other organisms, including: Arabidopsis, Mouse.