COP1 — Pisum sativum

Summary

PSAT5G242360 (COP1, also known as PsSPA3) on pea chromosome 5LG3 encodes a protein kinase domain-containing protein belonging to the SPA1/2/3/4 family. The product exhibits blue light photoreceptor activity, ubiquitin ligase activity, protein kinase activity, DNA binding transcription factor activity, and chromatin binding, and is associated with damaged DNA binding and FAD binding. It localizes to the nuclear ubiquitin ligase complex, Cul4-RING E3 ubiquitin ligase complex, chromatin, and nuclear bodies. The gene is associated with regulation of photomorphogenesis, anthocyanin and flavonoid biosynthesis, far-red and blue light signaling, circadian regulation, leaf morphogenesis, meristem size, and response to strigolactone, oomycetes, and UV-B stress. Associations with fruit length, seed viability, photoperiod-sensitive flowering, shoot growth angle, leaf temperature, and lignin content have also been noted. Studies of related genes in other species link the family to UV-B photomorphogenesis, pathogen resistance, and flowering time.