Team:Brown-Stanford/Lab/Protocols/NEB 5-alpha

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=="'NEB 5-alpha High-Efficiency Transformation''' ==
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{{:Team:Brown-Stanford/Templates/Protocol}}
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Taken from [http://www.neb.com/nebecomm/products/protocol119.asp the New England BioLabs Protocol]
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===Solutions needed===
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=== NEB 5-alpha High-Efficiency Transformation ===
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(Taken from [http://www.neb.com/nebecomm/products/protocol119.asp the New England BioLabs Protocol])
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For C2987H: Thaw a tube of NEB 5-alpha Competent E. coli cells on ice for 10 minutes.  
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==Overview==
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For C2987I: Thaw a tube of NEB 5-alpha Competent E. coli cells on ice until the last ice crystals disappear. Mix gently and carefully pipette 50 µl of cells into a transformation tube on ice.
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For C2987H (5-alpha competent cells), perform steps 1-7 in the tube provided.
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Add 1-5 µl containing 1 pg-100 ng of plasmid DNA to the cell mixture. Carefully flick the tube 4-5 times to mix cells and DNA. Do not vortex.
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Place the mixture on ice for 30 minutes. Do not mix.
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==Protocol==
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Heat shock at exactly 42°C for exactly 30 seconds. Do not mix.
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Place on ice for 5 minutes. Do not mix.
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#For C2987H: Thaw a tube of NEB 5-alpha Competent E. coli cells on ice for 10 minutes.  
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Pipette 950 µl of room temperature SOC into the mixture.
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#For C2987I: Thaw a tube of NEB 5-alpha Competent E. coli cells on ice until the last ice crystals disappear. Mix gently and carefully pipette 50 µl of cells into a transformation tube on ice.
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Place at 37°C for 60 minutes. Shake vigorously (250 rpm) or rotate.
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#Add 1-5 µl containing 1 pg-100 ng of plasmid DNA to the cell mixture. Carefully flick the tube 4-5 times to mix cells and DNA. Do not vortex.
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Warm selection plates to 37°C.
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#Place the mixture on ice for 30 minutes. Do not mix.
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Mix the cells thoroughly by flicking the tube and inverting, then perform several 10-fold serial dilutions in SOC.
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#Heat shock at exactly 42°C for exactly 30 seconds. Do not mix.
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Spread 50-100 µl of each dilution onto a selection plate and incubate overnight at 37°C. Alternatively, incubate at 30°C for 24-36 hours or 25°C for 48 hours.
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#Place on ice for 5 minutes. Do not mix.
 +
#Pipette 950 µl of room temperature SOC into the mixture.
 +
#Place at 37°C for 60 minutes. Shake vigorously (250 rpm) or rotate.
 +
#Warm selection plates to 37°C.
 +
#Mix the cells thoroughly by flicking the tube and inverting, then perform several 10-fold serial dilutions in SOC.
 +
#Spread 50-100 µl of each dilution onto a selection plate and incubate overnight at 37°C. Alternatively, incubate at 30°C for 24-36 hours or 25°C for 48 hours.

Latest revision as of 18:18, 28 September 2011

Brown-Stanford
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NEB 5-alpha High-Efficiency Transformation

(Taken from the New England BioLabs Protocol)

Overview

For C2987H (5-alpha competent cells), perform steps 1-7 in the tube provided.

Protocol

  1. For C2987H: Thaw a tube of NEB 5-alpha Competent E. coli cells on ice for 10 minutes.
  2. For C2987I: Thaw a tube of NEB 5-alpha Competent E. coli cells on ice until the last ice crystals disappear. Mix gently and carefully pipette 50 µl of cells into a transformation tube on ice.
  3. Add 1-5 µl containing 1 pg-100 ng of plasmid DNA to the cell mixture. Carefully flick the tube 4-5 times to mix cells and DNA. Do not vortex.
  4. Place the mixture on ice for 30 minutes. Do not mix.
  5. Heat shock at exactly 42°C for exactly 30 seconds. Do not mix.
  6. Place on ice for 5 minutes. Do not mix.
  7. Pipette 950 µl of room temperature SOC into the mixture.
  8. Place at 37°C for 60 minutes. Shake vigorously (250 rpm) or rotate.
  9. Warm selection plates to 37°C.
  10. Mix the cells thoroughly by flicking the tube and inverting, then perform several 10-fold serial dilutions in SOC.
  11. Spread 50-100 µl of each dilution onto a selection plate and incubate overnight at 37°C. Alternatively, incubate at 30°C for 24-36 hours or 25°C for 48 hours.
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