COX4I1 is located on the q arm of chromosome 16 in position 24.1 and has 6 exons. The COX4I1 gene produces a 9.3 kDa protein composed of 83 amino acids. COX4I1 is expressed ubiquitously. The protein encoded by COX4I1 belongs to the cytochrome c oxidase IV family. COX4I1 has a transit peptide domain and acetyl and phosphoprotein amino acid modifications. It is located at the 3' of the NOC4 (neighbor of COX4) gene in a head-to-head orientation and shares a promoter with it.
