Figure 6. Plate assay of hSTI1(P173T)/UTP21 double mutants. The growth of double mutants on complete media at 37 °C was altered in the strains carrying the hSTI1(P173T) allele. Co-expression of yeast UTP21 mutations L5P and D621G with hSTI1(P173T) caused noticeably enhanced growth, while the growth of the S602F double mutant was hindered.