protein-protein interactions with 142 of them being co-complex interactions. COX4I1 has been found to interact with SDCBP, MT-CO1, IKBKE, TMBIM4, and MCL1. LON, a mitochondrial protease, has also been suggested to regulate the COX4 subunit isoforms by degrading COX4I1 under hypoxic conditions. References External links Further reading