COP1 — Nicotiana attenuata

Summary

A4A49_12413 (COP1) on chromosome 2 of coyote tobacco (Nicotiana attenuata) encodes a COP1 protein with RING-type zinc finger domains and ubiquitin ligase activity. It also exhibits identical protein binding and zinc binding. The gene is associated with photomorphogenesis, red and far-red light phototransduction, photoprotection, and nuclear export. It is associated with the regulation of seed maturation, ABA signaling, nicotine anabolism, virus-induced PTGS, proteolysis via the proteasomal pathway, and protein ubiquitination. The product localizes to both the cytoplasm and nucleus. COP1 is linked to chlorophyll content and plant height. Studies of related genes in other species place the family within EC 2.3.2.27 (RING-type E3 ubiquitin transferase).