FIGURE 2.

FRH regulates the association between FRQ and WCC. A and B, IP results show that WC-2 fails to interact with FRQ or FRH in the FRQ6B2 and FRQ6B5 mutants, by using WC-2 antiserum or preimmune serum (PI). wt, wild type. B, longer exposure of FRH is also presented. C, race tube assays of FRQ6B mutants. The strains were grown in constant darkness (DD) in race tubes, and the growth fronts were labeled every 24 h. The race tubes shown here are representative samples from six replicate tubes.