Alexandra m (Talk | contribs) |
|||
Line 37: | Line 37: | ||
<div class="blog_top"> | <div class="blog_top"> | ||
<h4 class="blog_topHd"> | <h4 class="blog_topHd"> | ||
− | Protocol 6 : E.Coli | + | Protocol 6 : E.Coli Dh5α and BL21 transformation (Heat-shock) |
</h4> | </h4> | ||
<div class="blog"> | <div class="blog"> | ||
Line 51: | Line 51: | ||
<p>Thaw a tube of DH5-alpha competent cells on ice for 10 min.<br/> | <p>Thaw a tube of DH5-alpha competent cells on ice for 10 min.<br/> | ||
Mix gently and carefully pipette 50 µL of cells into a transformation tube on ice<br/> | Mix gently and carefully pipette 50 µL of cells into a transformation tube on ice<br/> | ||
− | Add | + | Add 1-5µL plasmid DNA to the cell mixture (one tube for each ratio)<br/> |
Carefully flick the tube 4-5 times to mix cells and DNA. Do not vortex.<br/> | Carefully flick the tube 4-5 times to mix cells and DNA. Do not vortex.<br/> | ||
Place the mixture on ice for 30 min. Do not mix.<br/> | Place the mixture on ice for 30 min. Do not mix.<br/> | ||
Heat shock at exactly 42°C for 45 s. Do not mix.<br/> | Heat shock at exactly 42°C for 45 s. Do not mix.<br/> | ||
Place on ice for 5 min. Do not mix.<br/> | Place on ice for 5 min. Do not mix.<br/> | ||
− | Pipette | + | Pipette 250µL of room temperature SOC into the mixture.<br/> |
Place at 37°C for 60 min at 250 rpm.<br/> | Place at 37°C for 60 min at 250 rpm.<br/> | ||
Warm selection plates to 25°C.<br/> | Warm selection plates to 25°C.<br/> | ||
− | Mix the cells | + | Mix the cells by flicking the tube and inverting.<br/> |
− | Spread | + | Spread 100µL of cells onto selection plates.<br/> |
Incubate all the plates O/N at 37°C.<br/> | Incubate all the plates O/N at 37°C.<br/> | ||
Line 135: | Line 135: | ||
</a> | </a> | ||
</li> | </li> | ||
+ | |||
<li> | <li> | ||
<a href="https://2016.igem.org/Protocol_1"> | <a href="https://2016.igem.org/Protocol_1"> | ||
− | + | <span>LB + antibiotic plates (see Protocol 1)</span> | |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | <span>LB+ antibiotic plates (see Protocol 1)</span> | + | |
Line 166: | Line 160: | ||
<li> | <li> | ||
<span>Incubator</span> | <span>Incubator</span> | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
</li> | </li> | ||
Revision as of 15:04, 16 October 2016
Thaw a tube of DH5-alpha competent cells on ice for 10 min.
Protocol 6 : E.Coli Dh5α and BL21 transformation (Heat-shock)
Aim: Introduce plasmid DNA in E.Coli bacteria
Mix gently and carefully pipette 50 µL of cells into a transformation tube on ice
Add 1-5µL plasmid DNA to the cell mixture (one tube for each ratio)
Carefully flick the tube 4-5 times to mix cells and DNA. Do not vortex.
Place the mixture on ice for 30 min. Do not mix.
Heat shock at exactly 42°C for 45 s. Do not mix.
Place on ice for 5 min. Do not mix.
Pipette 250µL of room temperature SOC into the mixture.
Place at 37°C for 60 min at 250 rpm.
Warm selection plates to 25°C.
Mix the cells by flicking the tube and inverting.
Spread 100µL of cells onto selection plates.
Incubate all the plates O/N at 37°C.