COP1 — Nicotiana attenuata

Summary

A4A49_12609 (COP1) on chromosome 2 of coyote tobacco (Nicotiana attenuata) encodes a protein with diphthine methylesterase activity (EC 3.1.1.97) and ubiquitin ligase activity, containing WD40 repeat domains. The gene is associated with photomorphogenesis, red and far-red light phototransduction, photoprotection, regulation of seed maturation, nicotine anabolism, ABA signaling, protein ubiquitination, proteasomal pathway, nuclear export, and virus-induced PTGS. It is linked to ethylene sensitivity, seed maturation, chlorophyll content, and plant height. The product localises to the cytoplasm, nucleus, and Cul4-RING E3 ubiquitin ligase complex. Studies of related genes in other species connect the family to leaf chlorophyll content, carotene content, anthocyanin content, fruit shape, and stomatal opening.