SOC: Difference between revisions

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== Summary ==
== Summary ==
SOC Medium.  Used in bacterial transformations
SOC Medium.  Used in [[Bacterial Transformation]].
 
== Ingredients ==
== Ingredients ==
*0.5% (w/v) yeast extract
*[[SOB]]
*2% (w/v) tryptone
*10 mM NaCl
*2.5 mM KCl
*10 mM MgCl<sub>2</sub>
*20 mM MgSO<sub>4</sub>
*20 mM glucose
*20 mM glucose
==Protocol==
==Protocol==
#SOB (SOC - glucose) is available at the kitchen
#Follow directions to make 1 liter of [[SOB]] media
#Add 1/100 volume 40% glucose (also available from the kitchen)
#After cooling medium to less than 50&deg;C, add 20 ml filter sterilized 20% glucose solution
 
 
===Alternative==
#2M glucose stock: dissolve 18 g glucose into 50 ml (final volume) ddH2O and filter-sterilize into sterile 50 ml tube
#aliquote in 2 ml tubes
#store at -20°C
{| border="1" cellpadding="5" cellspacing="0"
|+
! Reagent
! for 1 L
! 500 mL
! 100 mL
|-=
| 2 M glucose  
|10 ml
| 5 ml
| 1 ml
|}


==Source==
==Source==
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F. Ausubel et al., ''Short Protocols in Molecular Biology'' (John Wiley & Sons, ed. 4, 1999) pg. A1-36
F. Ausubel et al., ''Short Protocols in Molecular Biology'' (John Wiley & Sons, ed. 4, 1999) pg. A1-36
==Trivia==
The "C" in SOC supposedly stands for catabolite repression due to the added glucose.
[[Category:Material]]  [[Category:Standard Media]]

Revision as of 20:09, 29 December 2011

Summary

SOC Medium. Used in Bacterial Transformation.

Ingredients

  • SOB
  • 20 mM glucose

Protocol

  1. Follow directions to make 1 liter of SOB media
  2. After cooling medium to less than 50°C, add 20 ml filter sterilized 20% glucose solution


=Alternative

  1. 2M glucose stock: dissolve 18 g glucose into 50 ml (final volume) ddH2O and filter-sterilize into sterile 50 ml tube
  2. aliquote in 2 ml tubes
  3. store at -20°C
Reagent for 1 L 500 mL 100 mL
2 M glucose 10 ml 5 ml 1 ml

Source

Adapted From:

F. Ausubel et al., Short Protocols in Molecular Biology (John Wiley & Sons, ed. 4, 1999) pg. A1-36

Trivia

The "C" in SOC supposedly stands for catabolite repression due to the added glucose.