(r18) Barrick Lab :: ProtocolsRecipesDavisMingioli

DM: Davis-Mingioli

Growth medium used by the long-term E. coli evolution experiment.

1L	5L	Component	MW
5.3 g	26.7 g	Potassium Phosphate (dibasic) K₂HPO₄	MW 174.18
2 g	10 g	Potassium Phosphate (monobasic) KH₂PO₄	MW 136.07
1 g	5 g	Ammonium Sulfate (NH₄)₂ SO₄	MW 132.08
0.5 g	2.5 g	Sodium Citrate (trisodium, dihydrate) Na₃C₆H₅O₇ (H₂O)₂	MW 294.10

Add dH₂O to final volume and autoclave.

Note: if using Potassium phosphate (dibasic) trihydrate use 7g per L

After autoclaving add the following stock solutions:

1L	5L	Component
1.0 ml	5 ml	10% (w/v) Magnesium Sulfate MgSO₄ (separately autoclaved stock)
1.0 ml	5 ml	0.2% (w/v) Thiamine (vitamin B1) (filter sterilized)

And supplement with a carbon source.

If preparing DM-glucose (MW 180.16 g/mol), add this volume of 10% glucose solution (separately autoclaved stock) to get the final concentration desired:

1L	5L	DMX	[glucose] (w/v)	[glucose] (mg/L)	[glucose] (M)
250µl	1.25 ml	DM25	0.0025%	25 mg/L	139 µM
1 ml	5 ml	DM100	0.010%	100 mg/L	694 µM
2.5 ml	12.5 ml	DM250	0.025%	250 mg/L	1.39 µM
5 ml	25 ml	DM500	0.05%	500 mg/L	2.78 mM
10 ml	50 ml	DM1000	0.1%	1000 mg/L	5.55 mM
20 ml	100 ml	DM2000	0.2%	2000 mg/L	11.1 mM

Remember: DMX = DM + X mg/L glucose. Glucose may no longer limit the final growth density above approximately DM1000.

Final composition
5.1 mM	Sodium (Na⁺)
75.8 mM	Potassium (K⁺)
15.2 mM	Ammonium (NH₄)
0.83 mM	Magnesium (Mg²⁺)
8.41 mM	Sulfate (SO₄^2-)
45.3 mM	Phosphate (PO₄^3-)
1.7 mM	Citrate
139 µM	Glucose (in DM25)

Barrick Lab > ProtocolsMediaRecipes > ProtocolsRecipesDavisMingioli

Contributors to this topic

JeffreyBarrick, CraigBarnhart, AurkoDasgupta, SophiaLin, BrianRenda

Topic revision: r18 - 2014-06-28 - 19:38:04 - Main.JeffreyBarrick

Lab.ProtocolsRecipesDavisMingioli moved from Lab.ProtocolsRecipesDavisMinimal on 2012-10-28 - 20:34 by Main.JeffreyBarrick -