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Nature Cell Biology 2, E102–E104 (1 June 2000) | doi:10.1038/35014095

COP1 patrols the night beat

Raymond J. Deshaies & Elliot Meyerowitz

Light regulates the behaviour of many organisms. New data indicate that the greening of plants is facilitated by light-dependent stabilization of a transcription factor that is rapidly degraded in darkness. Thus, photomorphogenesis joins cell division and circadian rhythm as another critical biological process that is governed by proteolysis.