COP1 — Solanum lycopersicum

Summary

SlCOP1 (SOLYC12G005950.2) encodes a RING-finger ubiquitin ligase with WD40 repeats, conferring histone-binding, transcription-corepressor-binding and structural-molecule activities. In tomato, SlCOP1 is associated with anthocyanin accumulation and disease resistance, and is linked to phototransduction, sensory perception, UV-A response, carotenoid and chlorophyll metabolism, pigmentation, photosynthesis regulation, meristem development, and nuclear import. It localises to the nucleus, cytoplasm, Golgi membrane, coatomer and chromatin-silencing complexes, and participates in the COP1–SPA1 complex and circadian rhythm. Associations with agronomic traits include leaf chlorophyll content, lycopene, carotenoid and flavonoid content, fruit shape, stem length and diameter, ear length, petiole length, photosynthetic rate, quantum yield, photochemical quenching, stomatal opening, ethylene sensitivity, drought tolerance and disease tolerance. Related genes in other species link the family to ubiquitin ligase activity (EC 2.3.2.27).