albicans strains under different conditions of growth. Doubling time of each strain (hours) Growth conditions Wild-type (DAY185) sur7 Δ (SMB3-H) sur7 Δ + SUR7 (SMB3-R) 30°C, CSM (p > 0.05) 2.244 ± 0.070 2.199 ± 0.016 2.168 ± 0.034 42°C, CSM (*p < 0.0001) 3.645 ± 0.066 11.08 ± 0.122 * 3.560 ± 0.055 42°C, CSM + 1
M NaCl (*p < 0.001) 3.145 ± 0.119 3.374 ± 0.072 * 3.000 ± 0.036 * indicates statistical PP2 significance of sur7Δ compared to wild-type and SUR7 complemented strains. Figure 1 Characterization of growth of the sur7 Δ null mutant strain. The growth of strains DAY185 (black), sur7Δ (red), and sur7Δ+SUR7 (blue) were compared under different conditions. Standard growth
IACS-10759 conditions at 30°C in complete synthetic medium (CSM) supplemented with uridine is shown in (A). Growth at extreme temperature (42°C) was also tested in CSM supplemented with uridine (B) and CSM with 1 M NaCl supplemented with uridine (C). At high temperatures (42°C), the impaired growth of the sur7Δ null mutant strain was statistically significant compared to the control strains. All growth curves were performed in triplicate, with Log10 of OD600 plotted
against Time (hours). Corresponding error bars are indicated. Table 2 lists the calculated doubling time of each strain under each condition presented here. C. albicans Fmp45p-GFP fluorescence intensity increases in the presence of high Vasopressin Receptor salt and temperature In S. cerevisiae, transcript levels of the SUR7 paralog YNL194 is increased in the presence of high salt [24]. Expression of the Ynl194p-GFP fusion protein under its native promoter shifted from barely detectable fluorescence levels to highly detectable levels with the addition of high salt, and the gene product was found to co-localize with S. cerevisiae Sur7p [4]. There is only one closely related paralog of Ca Sur7p in C. albicans, Ca Fmp45p (orf19.6489), which shares 31% identity and 45% similarity. Captisol According to predictions using TMHMM http://www.cbs.dtu.dk/services/TMHMM/, Fmp45p has 4 transmembrane domains similar to Sur7p defined by amino acids 7-29; 106-128; 135-157; 186-208, and 7-29; 104-126; 139-161; 183-205, respectively.