immunoblot analyses using a cross-reactive pea phytochrome monoclonal antibody reveal that 1 ) the 120-kda band represents the full-length polypeptide , 2 ) phytochrome is predominantly localized in the algal cytoplasm , and 3 ) there are 150,000-250,000 phytochrome molecules/cell .
C0010834
cytoplasm
C0007634
cell