Ancestrally related L. kluyveri yeast demonstrate potential for Hsp70-mediated regulation of Hsf1 transcriptional activity.
A, schematic of S. cerevisiae (S.c.) and L. kluyveri (L.k.) Hsf1 proteins with sequence alignments of LIMBO-identified potential Hsp70 recognition sites within both ADs highlighted in the bottom half of the panel. B, Ssa1, but not Hsp90, co-immunoprecipitates with L. kluyveri N-AD (Lk-N-HGF) and C-AD (Lk-C-HGF) protein fusions when expressed in S. cerevisiae. C, the presumptive L. kluyveri Ssa homolog, but not Hsp90, co-immunoprecipitates with L. kluyveri N-AD (Lk-N-HGF) and C-AD (Lk-C-HGF) protein fusions when expressed in L. kluyveri. IP, immunoprecipitation.