Difference between revisions of "Rapamycin Sensitivity Assay of Yeast"
From Bridges Lab Protocols
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Davebridges (Talk | contribs) (added notes about dilutions and incubations) |
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#Check OD-600 | #Check OD-600 | ||
#Estimate how much to dilute yeast so that the next morning the OD is 0.3. For example, if the doubling time is 2.25h, then from 5 PM to 9 AM is 16h or 7.1 doublings, of 137 times the OD. Therefore to get an OD of 0.3, you need to innoculate at 0.3/137 = 0.00219. | #Estimate how much to dilute yeast so that the next morning the OD is 0.3. For example, if the doubling time is 2.25h, then from 5 PM to 9 AM is 16h or 7.1 doublings, of 137 times the OD. Therefore to get an OD of 0.3, you need to innoculate at 0.3/137 = 0.00219. | ||
| − | #For each flask innoculate several dilutions | + | #For each flask innoculate several dilutions. |
| + | #The next morning check OD of overnight cultures. Cultures should be between 0.1 and 0.5 | ||
| + | #Spin down cultures and resuspend to an OD of 3.0 | ||
| + | #Make 10X serial dilutions of cultures and plate 1 uL of each dilution on YPD and YPD/Rapamycin Plates | ||
| + | #Grow plates at either 24 or 30C | ||
Latest revision as of 18:21, 14 October 2009
Materials
- YPD Media. See YPD Media and Agar
- YPD Plates with either DMSO or 2-200 nM Rapamycin. See YPD Media and Agar
- Yeast strains, streaked out on appropriate plate (< 1 month old)
Protocol
- Innoculate 3 mL of YPD in a small erlenmeyer flask with one colony of yeast
- Grow for ~8h at 24C
- Check OD-600
- Estimate how much to dilute yeast so that the next morning the OD is 0.3. For example, if the doubling time is 2.25h, then from 5 PM to 9 AM is 16h or 7.1 doublings, of 137 times the OD. Therefore to get an OD of 0.3, you need to innoculate at 0.3/137 = 0.00219.
- For each flask innoculate several dilutions.
- The next morning check OD of overnight cultures. Cultures should be between 0.1 and 0.5
- Spin down cultures and resuspend to an OD of 3.0
- Make 10X serial dilutions of cultures and plate 1 uL of each dilution on YPD and YPD/Rapamycin Plates
- Grow plates at either 24 or 30C
