Fig. 9.

dra1 shows normal levels of phyB protein. One-day-old etiolated seedlings were either maintained in darkness or transferred to monochromatic red light for 3 d, at which point protein was extracted. Upper panel: western blot of extracts of the wild type (WT), dra1, and phyA-410 with phyB-specific monoclonal antibodies. Lower panel: Coomassie-stained gel showing equal loading.