Freimoser:Recipes:Yeast:SC Sfree: Difference between revisions

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====1000x YNB vitamin solution====
====1000x YNB vitamin solution====




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! Compound !! Vol. (ul) !! Vol. (ul)
! Compound !! Vol. (ul) !! Vol. (ul)
|-
|-
! Salt solution  
!H<sub>2</sub>O
| 33200 || 28200
!Salt solution  
| 2500 || 2500
| 2500 || 2500
|-
|-
! trace element solution 1  
! trace element solution 1  
|50
|50 || 50
|50
|-
I-
!
!  
|}
|}

Revision as of 05:58, 1 February 2007

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Sulfur free SC-medium (self mixed SC medium)

Remark:

This recipe describes the mixing of a sulfur free SC-medium. All sulfur sources in “normal” SC-medium are replaced by other salts, mostly chlorides. The changes are also indicated. The phosphate source is separate in order to allow mixing of media with different phosphate content. The 20x salt solution, 100x phosphate source and 40% glucose solution were autoclaved. All other solutions were filter sterilized. The described procedure works, but it is possible that there are simpler solutions. But it is not possible to make a stock solution of all trace elements for example. The concentrations in parentheses indicate approximate concentrations in the final 1x medium.

20x Salt solution, 500 ml

  • MgCl2: 16 g (4 mM)
  • NaCl: 1 g (1.7 mM)
  • CaCl2 x 2 H2O: 1 g (1 mM)

100 x phosphate source, 100 ml

  • KH2PO4: 10 g (7.5 mM)

1000x trace element solution 1, 10 ml

  • Boric acid (H3BO3): 0.05 g (8 uM)
  • CuCl2 x 2 H2O: 0.004 g (0.25 uM) (replaces CuSO4)
  • KI (potassium iodide): 0.01 g (0.6 uM)
  • C4H10O6Zn (zinc acetate): 0.055 g (2 uM) (replaces ZnSO4)

1000x MnCl2 x 4 H2O (manganese chloride):

  • 0.04 g in 10 ml (1000x) (2 uM) (replaces MnSO4)

1000 x Na2MoO4 (sodium molybdate):

  • 0.02 g in 10 ml (1000x) (1 uM)

500x FeCl3 x 6 H2O (ferric chloride):

  • 0.02 g in 10 ml (500x) (1.5 uM)

100x NH4Cl (ammonium chloride):

  • 2 g in 10 ml (37.8 mM)

20x Glucose (C6H12O6):

  • 40% (20x)

10x MES buffer (2-(N-morpholino)ethanesulfonic acid):

  • 0.5 M, pH 6 (10x)

1000x YNB vitamin solution

Mixing

Volumes for the preparation of 50 ml 1.1x SC-S medium
Compound Vol. (ul) Vol. (ul)
H2O 33200 28200 Salt solution 2500 2500
trace element solution 1 50 50
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