| Description | Function: This protein is one of the nuclear-coded polypeptide chains of cytochrome c oxidase, the terminal oxidase in mitochondrial electron transport.Subcellular location: Mitochondrion inner membraneTissue specificity: COXIV: Ubiquitous. COX4I2: Highly expressed in lung. Also known as: COX41, Cytochrome c oxidase subunit 4 isoform 1, mitochondrial, Cytochrome c oxidase subunit IV isoform 1, COX IV-1, Cytochrome c oxidase polypeptide IV, COX4I1, COX42, Cytochrome c oxidase subunit 4 isoform 2, mitochondrial, Cytochrome c oxidase subunit IV isoform 2, COX IV-2, COX4I2, COX IV, COXIV. |