Amino Acid Stock Solutions 

(from Bob McNab)



Amino acid 

Stock Concentration

Molecular Weight

gm/100ml

ml/liter 

ml/plate

Arginine 

50mM 

100mM 

210.7 

1.054 

2.107 

10 

5 

0.2 

0.1 

Asparagine 

300 mM 

132.1 

7.926 

10 

0.2 

Histidine HCl 

100 mM 

209 

2.09 

3 

0.1 

Isoleucine 

50 mM 

131.2 

0.656 

10 

0.2 

Leucine 

100 mM 

131 

1.31 

20 

0.2 

Lysine 

100 mM 

182.7 

1.827 

10 

0.1 

Methionine 

50 mM 

149.2 

.0746 

20 

0.15 

Phenylalanine 

30 mM 

165.2 

.0.5 

10 

0.2 

Proline 

100 mM 

115.1 

1.15 

10 

0.2 

Serine 

100 mM 

105.1 

1.05 

10 

0.2 

Threonine 

300 mM 

119.1 

3.57 

5 

0.1 

Tryptophan1 

40 mM 

204.2 

0.8 

10 

0.2 

Tyrosine2 

7 mM 

181.2 

0.127 

10 

0.2 

Valine 

50 mM 

117.5 

0.59 

3.4 

0.07 


Add few drops of NaOH to solubilize as necessary. 

1. Filter sterilize, do not autoclave and do not make more than 100ml as deteriorates in 2-3 months. 

2. Filter sterilize, do not autoclave. 


Last Update: Monday November 14 2016
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Eric Kofoid eckofoid at ucdavis.edu