产品介绍： COP1 (E3 ubiquitin-protein ligase COP1) is involved in phytochrome signaling pathway and acts as a repressor of photomorphogenesis and as an activator of etiolation in the darkness. COP1 is repressing photomorphogenesis in darkness by mediating ubiquitination followed by a subsequenct proteasomal degradation of light-induced transcription factors (HY5, HYH and LAF1). This protein is localized in nucleus in the darkness and upon illumination is gradually transferred into cytoplasm.