Freimoser:Recipes:Yeast:SC: Difference between revisions

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#Add 50 ml of a 40% glucose solution that was autoclaved separately
#Add 50 ml of a 40% glucose solution that was autoclaved separately


#If solid medium is required, add 20 g/L agar prior to autoclaving
*If solid medium is required, add 20 g/L agar prior to autoclaving





Revision as of 06:45, 31 October 2006

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SC medium

SC medium contains yeast nitrogen base, ammonium sulfate, a carbon source (usually glucose) and amino acids. Depending on the specific strains and experiments different variations are possible.

Recipe for 1 liter

  1. 6.8 g Yeast nitrogen base (YNB, including ammonium sulfate, from Formedium)
  2. 0.79 g Complete supplement mixture (CSM, from Formedium)
  3. Fill up to 950 ml and autoclave
  4. Add 50 ml of a 40% glucose solution that was autoclaved separately
  • If solid medium is required, add 20 g/L agar prior to autoclaving


Modifications

  1. For SC-URA use 0.77 g/L CSM–URA drop-out mix Qbiogene
  2. For SC-P use 0.7 g/L phosphate free YNB (Qbiogene). The desired amount of phosphate can then be added separately. We use YNB without ammonium sulfate and potassium phosphate. Therefore, ammonium sulfate must be added separately!
  3. To test nitrogen sources Yeast Carbon Base (YCB) can be used (from Formedium). YCB already contains 10.15 g glucose! Therefore, add only 10 g glucose for 1 L of medium.

Remarks

  1. many different drop-out amino acid mixtures are available either from Qbiogene or Formedium
  2. different versions of YNB are available from the same suppliers