Figure 2.
UTH1 is involved in maintaining the integrity of the yeast cell wall. (A) Deleting UTH1 enhances cell growth on media supplemented with calcofluor white (CFW) or sodium dodecyl sulfate (SDS). 5 μl aliquots of 10-fold serial dilutions of wildtype and Δuth1 mutant cells in the W303-1A strain background were plated onto the designated media and cultured at 30°C for 2 or 4 days, depending upon the particular plate. YPDS denotes YPD plates supplemented with 1 M sorbitol respectively. (B) Overexpression of PKC1 enhances cell wall integrity mimicking a deletion of UTH1. 5 μl aliquots of 10-fold serial dilutions of wildtype and Δuth1 mutant cells transformed with plasmid pFR22 to overexpress PKC1 were plated onto the designated selective SD plates and cultured at 30°C for 2 or 5 days. SD-S denotes SD plates supplemented with 1 M sorbitol. All spot assays were repeated at least three times and a representative experiment is shown.