CCD4 — Brassica oleracea

Summary

BoCCD4 (BOLC102_C01P014210.1) on cabbage chromosome 1 encodes a carotenoid oxygenase with 9-cis-epoxycarotenoid dioxygenase activity and carotenoid dioxygenase activity, and it binds metals, mRNA and proteins. The gene is associated with carotenoid metabolism, including beta-carotene and lycopene anabolism and breakdown, abscisic acid anabolism, sucrose metabolism, chlorophyll anabolism, and processes such as head development, anther development, fruit ripening, chloroplast organization and mRNA modification. It localises to the chloroplast stroma, cytosol, nucleus and other compartments. BoCCD4 is linked to flower and petal color, carotenoid and chlorophyll content, chloroplast development, leaf senescence carotenoid turnover, seed beta-carotene content, apocarotenoid signaling, and a yellow seedling phenotype with altered chloroplast RNA editing. Studies of related genes in other species connect the CCD4 family to carotenoid degradation, apocarotenoid glycoside biosynthesis and chloroplast RNA editing.