COX1 — Capsicum annuum

Summary

T459_21731 (COX1, CaCOX1) on pepper chromosome 8 encodes cytochrome c oxidase subunit 1, a component of respiratory chain complex IV. The gene product possesses cytochrome-c oxidase activity, heme binding, and metal binding, and is localised to the mitochondrial inner membrane. It is associated with mitochondrial electron transport from cytochrome c to oxygen, electron transport coupled proton transport, oxidative phosphorylation, aerobic and cellular respiration, and cell death. CaCOX1 has also been connected to cytoplasmic male sterility. Studies of related genes in other species link the COX1 family to quantum yield, pollen fertility, chlorophyll content, and drought tolerance.