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. 2015 Jan 1;27(1):8. doi: 10.1105/tpc.115.00038

graphic file with name PC_00038_f1.jpg

A model for light-induced inactivation of COP1-SPA by phyA. phyA interacts with SPA proteins in the light to alter the interaction between COP1 and SPA proteins, thereby inactivating COP1 and releasing its proteasome-mediated inhibition of photomorphogenesis. (Reprinted from Sheerin et al. [2015], Figure 7.)