Fig. 5: Kinetics of phot1-mediated phosphorylation of NPH3.

a Time-course of S744 phosphorylation. Immunoblot analysis of total protein extracts from etiolated wild-type seedlings irradiated with 0.5 µmol m−2 s−1 of blue light for the time indicated. Blots were probed with anti-pS744 and anti-NPH3 antibodies. b Time-course of S744 dephosphorylation. Immunoblot analysis of total protein extracts from etiolated wild-type seedlings maintained in darkness (D) or irradiated with 0.5 µmol m−2 s−1 for 15 min and returned to darkness for the time indicated. Blots were probed with anti-pS744 and anti-NPH3 antibodies. Experiments were repeated at least twice with similar results.