COX1 — Capsicum annuum

Summary

CaCOX1 (T459_29695) on pepper chromosome 12 encodes cytochrome c oxidase subunit 1, a core component of respiratory complex IV. The gene product possesses cytochrome-c oxidase activity, heme binding, and metal binding, and is localised to the mitochondrial inner membrane as part of the respiratory chain. CaCOX1 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. The gene has 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.