A, Serial dilutions of sse1Δ cells expressing the indicated Sse1-Sse2 chimeras or empty vector were spotted onto plates and incubated at 30°C for 2 days. B, FLAG-tagged versions of the indicated Sse1-Sse2 chimeras (described in Experimental Procedures) were expressed in sse1Δ yeast and immunoprecipitated from protein extracts. Protein complexes were resolved by SDS-PAGE and analyzed by Coomassie staining or anti-Sse1 immunoblotting. C, sse1Δ cells expressing FLAG-Sse1 (lane 1), FLAG-Sse1 NBD (lanes 2 and 3), FLAG-Sse2 NBD (lanes 4 and 5) or Sse1 PBD (lanes 3 and 5) were subjected to FLAG immunoprecipitation. Protein complexes were resolved by SDS-PAGE and stained with Coomassie.