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- | <div class="headerImage"><img src="https://static.igem.org/mediawiki/2014/3/34/LabProtocols.jpg"></div>
| |
- | <!--<div class="pageContent">-->
| |
- | <h1 class="pageTitle">Lab Protocols</h1>
| |
- | <div class="gap5px"></div>
| |
| | | |
- | <div class="pageSection1"> | + | #navigationBar li span { |
- | <div class="pageData">
| + | } |
- | <h2>Protocol 1: Produce LB Broth</h2>
| + | |
- | <h3>Materials and Equipment</h3>
| + | |
- | LB broth mix, sterile water, weighing scales, weighing boat, conical flask, measuring cylinder.
| + | |
- | <h3>Time</h3>
| + | |
- | Prep: 5 minutes<br/>
| + | |
- | Run: 2 hours
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Weigh out 2g of LB broth mix in a weighing boat and add into a 250ml conical flask.</li>
| + | |
- | <li>Measure 100ml sterile water into a measuring cylinder and dispense into the same conical flask.</li>
| + | |
- | <li>Swirl.</li>
| + | |
- | <li>Stopper the flask with cotton wool and foil.</li>
| + | |
- | <li>Label on autoclave tape. Format 'iGEM, Room Number'.</li>
| + | |
- | <li>Move the flask(s) to the autoclave to be sterilised.</li>
| + | |
- | </ol>
| + | |
- | </div>
| + | |
- | </div> | + | |
| | | |
- | <div class="pageSection2"> | + | #navigationBar li span a { |
- | <div class="pageData"> | + | padding: 0; |
- | <h2>Protocol 2: Produce LB Agar</h2>
| + | padding-top: 10px; |
- | <h3>Materials and Equipment</h3>
| + | text-decoration: none; |
- | LB Agar mix, sterile water, weighing scales, weighing boat, conical flask, measuring cylinder.
| + | white-space: nowrap; |
- | <h3>Time</h3>
| + | color: white; |
- | Prep: 5 minutes<br/>
| + | opacity: 0.9; |
- | Run: 2 hours
| + | } |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Weigh out 3.5g of LB agar mix in a weighing boat and add into a conical flask.</li>
| + | |
- | <li>Measure 100ml sterile water into a measuring cylinder and dispense into the same conical flask.</li>
| + | |
- | <li>Swirl.</li>
| + | |
- | <li>Stopper the flask with cotton wool and foil.</li>
| + | |
- | <li>Label on autoclave tape. Format 'iGEM, Room Number'.</li>
| + | |
- | <li>Move the flask(s) to the autoclave to be sterilised.</li>
| + | |
- | </ol>
| + | |
- | </div>
| + | |
- | </div> | + | |
| | | |
- | <div class="pageSection1"> | + | #navigationBar li a.scrolling { |
- | <div class="pageData">
| + | color: black; |
- | <h2>Protocol 3: Make overnight starter cultures</h2>
| + | } |
- | <h3>Materials and Equipment</h3>
| + | |
- | Stripette, bunsen burner, sterile loop, falcon tubes, LB broth.
| + | |
- | <h3>Time</h3>
| + | |
- | Prep: 10 minutes<br/>
| + | |
- | Run: 16 hours
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Use a stripette to take 5ml of LB broth from a 250ml conical flask.</li>
| + | |
- | <li>Dispense into a falcon tube.</li>
| + | |
- | <li>Sterilise a metal loop in a flame.</li>
| + | |
- | <li>Take a culture from an agar plate using the sterile loop and put into one of the falcon tubes.</li>
| + | |
- | <li>Agitate.</li>
| + | |
- | <li>Replicate this using scrapings from a clean agar plate and a fresh tube to use as a positive control.</li>
| + | |
- | <li>Put the tubes into the incubator overnight (37c, 150rpm) to grow up the cultures.</li>
| + | |
- | </ol>
| + | |
- | </div> | + | |
- | </div> | + | |
| | | |
- | <div class="pageSection2"> | + | #navigationBar li a:hover { |
- | <div class="pageData"> | + | color: #FBA917; |
- | <h2>Protocol 4: Generate chemically competent E. Coli</h2>
| + | } |
- | <h3>Materials and Equipment</h3>
| + | |
- | LB broth, starter culture, P1000, P200, pipette tips, incubator, cuvettes, spectrophotometer, Virkon, falcon tubes, ice, weighing scales, centrifuge, CaCl2, 20% glycerol, stripette, eppendorf tubes and -80°C freezer.
| + | |
- | <h3>Time</h3>
| + | |
- | Prep: 40 minutes<br/>
| + | |
- | Run: 5 hours
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Grow cells
| + | |
- | <ol>
| + | |
- | <li>Take 1ml starter culture and add to 100ml LB broth.</li>
| + | |
- | <li>Incubate at 37°C, 150rpm.</li>
| + | |
- | <li>Check every hour by testing the optical density at 600nm (OD) using a spectrophotometer to determine whether enough cells are present in the culture.</li>
| + | |
- | <li>0.600 OD is ideal, this is the point at which the cells are in the exponential growth phase.</li>
| + | |
- | <li>Take 1ml of culture into a cuvette to measure; dispose of this after use in Virkon.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | <li>Remove cells
| + | |
- | <ol>
| + | |
- | <li>Pour 30ml aliquots from the flasks into falcon tubes; 3 tubes per flask.</li>
| + | |
- | <li>Put tubes on ice for approx 10mins; all equipment used from this point on must be cold e.g. pipette tips.</li>
| + | |
- | <li>Weigh the falcon tubes and pair together similar weight tubes for balance in the centrifuge; tubes paired together must weigh within 0.5g of each other.</li>
| + | |
- | <li>Spin at 4°C, 4000rpm for 5mins.</li>
| + | |
- | <li>After the tubes have all been spun, pour off the supernatant to remove the LB broth, leaving cells in a pellet. Put tubes back on the ice.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | <li>Make cells competent
| + | |
- | <ol>
| + | |
- | <li>Add 1ml of CaCl2 to the cells, use the pipette to pull the liquid and cells up and down to resuspend.</li>
| + | |
- | <li>Once resuspended, add another 14ml of CaCl2; 15ml total volume.</li>
| + | |
- | <li>Put back on ice for approx. 10mins to allow cells to acclimatise at the temperature with the CaCl2.</li>
| + | |
- | <li>Re-weigh and pairs tubes again for balance.</li>
| + | |
- | <li>Spin again at 4°C, 4000rpm for 5mins.</li>
| + | |
- | <li>After tubes have been spun, leave on ice for 5mins. Pour off the supernatant?</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | <li>Aliquot
| + | |
- | <ol>
| + | |
- | <li>Add 600μl of 20% glycerol to each falcon tube.</li>
| + | |
- | <li>Label eppendorf tubes.</li>
| + | |
- | <li>Aliquot 200μl from each falcon tube into eppendorf tubes (3 per falcon).</li>
| + | |
- | <li>Freeze at -80°C.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | </ol>
| + | |
- | </div>
| + | |
- | </div> | + | |
| | | |
- | <div class="pageSection1"> | + | #navigationBar > li > ul > li { |
- | <div class="pageData">
| + | width: 100%; |
- | <h2>Protocol 5: Mini-Prep</h2>
| + | margin: 0 0 0 0; |
- | <h3>Materials and Equipment</h3>
| + | } |
- | Ice, starter cultures, mini-prep kit, centrifuge, P100 pipette, weighing scale, Virkon.
| + | |
- | <h3>Time</h3>
| + | |
- | Prep: ?<br/>
| + | |
- | Run: ?
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Extract cells
| + | |
- | <ol>
| + | |
- | <li>Match up weights of falcon tubes so they are paired within 0.5g.</li>
| + | |
- | <li>Spin down starter cultures in a centrifuge; 5mins, 4°C, 4000rpm.</li>
| + | |
- | <li>Pour off supernatant into Virkon.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | <li>Resuspend cells
| + | |
- | <ol>
| + | |
- | <li>Add 250μl of P1 resuspension buffer to each falcon tube using P1000.</li>
| + | |
- | <li>Resuspend the cells.</li>
| + | |
- | <li>Use pipette to move suspension into separate, labelled eppendorf tubes.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | <li>Lyse cells
| + | |
- | <ol>
| + | |
- | <li>Add 250μl of P2 buffer to each eppendorf tube.</li>
| + | |
- | <li>This will lyse cells - a blue colour will indicate they have been lysed.</li>
| + | |
- | <li>Do not leave for more than 5mins.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | <li>Neutralise cells
| + | |
- | <ol>
| + | |
- | <li>Add 350μl of N3 neutralisation buffer.</li>
| + | |
- | <li>Once the reaction is complete, the liquid will turn clear/white.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | <li>Purify DNA
| + | |
- | <ol>
| + | |
- | <li>Spin down the cells in a centrifuge; 10 mins, 17000g, 4°C.</li>
| + | |
- | <li>Pour supernatant into mini-prep columns.</li>
| + | |
- | <li>Centrifuge columns for 1 min, 17000g, 4°C.</li>
| + | |
- | <li>Discard flow through.</li>
| + | |
- | <li>Add 500μl of PB buffer to each column.</li>
| + | |
- | <li>Centrifuge columns for 1min, 17000g, 4°C.</li>
| + | |
- | <li>Discard flow through.</li>
| + | |
- | <li>Add 750μl PE buffer to each column.</li>
| + | |
- | <li>Centrifuge columns for 1min, 17000g, 4°C.</li>
| + | |
- | <li>Pour off supernatent.</li>
| + | |
- | <li>Centrifuge columns for 1min, 17000g, 4°C.</li>
| + | |
- | <li>Discard bottom of the mini-prep.</li>
| + | |
- | <li>Move column to a new labelled eppendorf.</li>
| + | |
- | <li>Add 50μl of elution buffer.</li>
| + | |
- | <li>Centrifuge columns for 1min, 17000g, 4°C.</li>
| + | |
- | <li>Discard column.</li>
| + | |
- | <li>Immediately place on ice; store in the B56 sewer sample freeze.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | </ol>
| + | |
- | </div>
| + | |
- | </div> | + | |
| | | |
- | <div class="pageSection2"> | + | #navigationBar > li > ul > li > a { |
- | <div class="pageData">
| + | background-color: #000000; |
- | <h2>Protocol 6: Run a gel</h2>
| + | opacity: 0.9; |
- | <h3>Materials and Equipment</h3>
| + | color: white; |
- | Agarose mix, TAE buffer, Flask, Microwave, Ethidium bromide, P10, Tips, Autoclave tape, Gel tray, Comb, Buffer tray, Loading buffer, Dna, Eppendorf, Transilluminator.
| + | } |
- | <h3>Time</h3>
| + | |
- | Prep: 30 mintues<br/>
| + | |
- | Run: 1 hour
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Make up a 1% agarose gel
| + | |
- | <ol>
| + | |
- | <li>Weigh out 0.4g agarose.</li>
| + | |
- | <li>Measure 40ml TAE buffer.</li>
| + | |
- | <li>Add both into a 250ml conical flask.</li>
| + | |
- | <li>Swirl.</li>
| + | |
- | <li>Microwave on full for 2 minute, swirling at intervals to ensure all the agarose has dissolved.</li>
| + | |
- | <li>Run side of flask under tap to cool, until comfortable to hold in a gloved hand.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | <li>Prepare the gel
| + | |
- | <ol>
| + | |
- | <li>Add 1μl ethidium bromide to the conical flask containing the melted agarose.</li>
| + | |
- | <li>Pour this solution smoothly into a gel tray (sealed with autoclave tape) and add a comb which allows for either 8 or 13 DNA samples to be run at once.</li>
| + | |
- | <li>Leave the gel to set for approximately 15 - 30 minutes.</li>
| + | |
- | <li>Once the gel is set remove the comb and autoclave tape.</li>
| + | |
- | <li>Place the gel tray inside the buffer tray and fill the remaining space with TAE buffer.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | <li>Load 'checking' samples
| + | |
- | <ol>
| + | |
- | <li>Load 5μl of 1kn ladder into the first well of the gel.</li>
| + | |
- | <li>Pipette 2μl 5x loading buffer onto a sheet of parafilm.</li>
| + | |
- | <li>pipette 8μl DNA onto the loading buffer and pipette up and down to mix.</li>
| + | |
- | <li>Resting the pipette tip on the back of the well, load 8μl of sample.</li>
| + | |
- | <li>Repeat for each sample.</li>
| + | |
- | <li>Run the Gel at 100v for 60 minutes.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | <li>Load 'extraction' samples
| + | |
- | <ol>
| + | |
- | <li>Load 5μl of 1kn ladder into the first well of the gel.</li>
| + | |
- | <li>Add 5x loading buffer into each sample, to give a final ratio of 1:4.</li>
| + | |
- | <li>Resting the pipette tip on the back of the well, load as much sample as possible.</li>
| + | |
- | <li>Repeat for each sample.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | <li>Visualise
| + | |
- | <ol>
| + | |
- | <li>Remove the agarose gel from the gel tray and place in the trans-illuminator.</li>
| + | |
- | <li>Open UVP (on the computer desktop).</li>
| + | |
- | <li>Select the type of gel and the exposure time.</li>
| + | |
- | <li>Press capture to take an image.</li>
| + | |
- | <li>Save image to the iGEM2014 folder.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | </ol>
| + | |
- | </div> | + | |
- | </div> | + | |
| | | |
- | <div class="pageSection1"> | + | #navigationBar > li > ul > li > a.scrolling { |
- | <div class="pageData">
| + | color: white; |
- | <h2>Protocol 7: Pouring Plates</h2>
| + | } |
- | <h3>Materials and Equipment</h3>
| + | |
- | Sterile hood, Flask, Agar mix, dH2O, antibiotic, empty plates, P200, tips.
| + | |
- | <h3>Time</h3>
| + | |
- | Prep: 15 minutes<br/>
| + | |
- | Run: 20 minutes
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Use the sterile hood.</li>
| + | |
- | <li>Make up 100ml LB Agar (Protocol 2).</li>
| + | |
- | <li>Heat in the microwave as follows:
| + | |
- | <ul>
| + | |
- | <li>Power setting 4 for 3 minutes.</li>
| + | |
- | <li>Wait for 6 minutes.</li>
| + | |
- | <li>Power setting 4 for 2 minutes.</li>
| + | |
- | </ul>
| + | |
- | </li>
| + | |
- | <li>Wait to cool (until the flask is warm but comfortable to hold).</li>
| + | |
- | <li>Add 100μl 1/1000 stock of appropriate antibiotic to the agar.</li>
| + | |
- | <li>Pour 4 plates and leave inside the hood to cool and dry.</li>
| + | |
- | </ol>
| + | |
- | </div> | + | |
- | </div> | + | |
| | | |
- | <div class="pageSection2"> | + | #igemLogo { |
- | <div class="pageData"> | + | height: 40px; |
- | <h2>Protocol 8: Measure Concentration of DNA with NanoDrop 2000</h2>
| + | opacity: 0.8; |
- | <h3>Materials and Equipment</h3>
| + | padding-right: 10px; |
- | Nanodrop, P10, Tips, dH2O, Paper towel.
| + | } |
- | <h3>Time</h3>
| + | |
- | Prep: 5 minutes<br/>
| + | |
- | Run: 5 minutes
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Set up the NanoDrop2000, select “Nucleic Acid”, then “Routine Verification”.</li>
| + | |
- | <li>Spray paper towel with distilled water, then clean metal nodules on metal part and lid.</li>
| + | |
- | <li>Add 1μl of buffer solution to nodule.</li>
| + | |
- | <li>Close lid.</li>
| + | |
- | <li>Select 'Blank' on the programme.</li>
| + | |
- | <li>Reopen lid.</li>
| + | |
- | <li>Add 2μl of DNA Sample.</li>
| + | |
- | <li>Close lid.</li>
| + | |
- | <li>Select 'measure' on the programme.</li>
| + | |
- | <li>Take note of the concentration (in ng/ml).</li>
| + | |
- | <li>Clean nodules again with distilled water.</li>
| + | |
- | <li>Repeat for different DNA sample.</li>
| + | |
- | </ol>
| + | |
- | </div> | + | |
- | </div> | + | |
| | | |
- | <div class="pageSection1"> | + | #teamLogo { |
- | <div class="pageData"> | + | float: left; |
- | <h2>Protocol 9: Transforming Cells To Ensure Competency</h2>
| + | margin-right: auto; |
- | <h3>Materials and Equipment</h3>
| + | } |
- | Eppendorfs, P1000, P200, P10, Tips, Competent cells, Ligation mix, Ice, Heat block, LB broth, Incubator, Agar plates, Flame, Spreader, Ethanol
| + | |
- | <h3>Time</h3>
| + | |
- | Prep: 5 minutes<br/>
| + | |
- | Run: 1 hour
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Using concentration measure by the nanodrop, calculate the volume of DNA sample required: C1V1 = C2V2.</li>
| + | |
- | <li>Where C2 required is 10ng and V2 is 100μl.</li>
| + | |
- | <li>Use the calculated volume of DNA to transform (Protocol 11) chemically competent cells before plating out.</li>
| + | |
- | <li>Calculate the transformation efficiency in colonies per ng of DNA.</li>
| + | |
- | </ol>
| + | |
- | </div>
| + | |
- | </div> | + | |
| | | |
- | <div class="pageSection2"> | + | #teamLogo li a img { |
- | <div class="pageData"> | + | height: 80px; |
- | <h2>Protocol 10: Blunt End Ligation</h2>
| + | -webkit-transition: height 0.25s linear; |
- | <h3>Materials and Equipment</h3>
| + | -moz-transition: height 0.25s linear; |
- | Eppendorfs, P10, tips, Reaction buffer, dH2O, Restricted DNA, T4 Ligase.
| + | -o-transition: height 0.25s linear; |
- | <h3>Time</h3>
| + | transition: height 0.25s linear; |
- | Prep: 10 minutes<br/>
| + | } |
- | Run: 10 minutes
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Make up eppendorfs containing ligation mix, as shown:
| + | |
- | <ul>
| + | |
- | <li>10μl reaction buffer.</li>
| + | |
- | <li>8μl water.</li>
| + | |
- | <li>2μl Cut DNA.</li>
| + | |
- | <li>1μl Cut plasmid.</li>
| + | |
- | <li>1μl T4 ligase.</li>
| + | |
- | </ul>
| + | |
- | </li>
| + | |
- | <li>Flick to mix and leave for ten minutes.</li>
| + | |
- | </ol>
| + | |
- | </div>
| + | |
- | </div> | + | |
| | | |
- | <div class="pageSection1"> | + | #teamLogo li a img.scrolling { |
- | <div class="pageData">
| + | height: 40px; |
- | <h2>Protocol 11: Chemical Tranformation</h2>
| + | } |
- | <h3>Materials and Equipment</h3>
| + | |
- | Eppendorfs, P1000, P200, P10, Tips, Competent cells, Ligation mix, Ice, Heat block, LB broth, Incubator, Agar plates, Flame, Spreader, Ethanol.
| + | |
- | <h3>Time</h3>
| + | |
- | Prep: 5 minutes<br/>
| + | |
- | Run: 1 hour 45 minutes
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Take an appropriate number of eppendorfs, each containing 100μl of competent E. coli cells.</li>
| + | |
- | <li>Into each one, pipette 5μl of each ligation mix.</li>
| + | |
- | <li>Leave a last one to act as a negative control.</li>
| + | |
- | <li>Put the eppendorfs on ice for 30 minutes.</li>
| + | |
- | <li>Heat shock eppendorfs at 42°C for 30 seconds.</li>
| + | |
- | <li>Put on ice for 2 minutes.</li>
| + | |
- | <li>Add 1ml LB broth to each of the eppendorfs and then incubate at 37°C for 60 minutes.</li>
| + | |
- | <li>Remove cells from incubator and spin down at 13000RPM for 60 seconds.</li>
| + | |
- | <li>Pour off the supernatant and resuspend the cells.</li>
| + | |
- | <li>Near a flame, pipette each of the remaining cells onto individual plates (prepared earlier).</li>
| + | |
- | <li>Sterilise a glass spreader using ethanol (flamed) and spread cells evenly until the surface of the agar appears dry.</li>
| + | |
- | <li>Incubate at 37°C overnight.</li>
| + | |
- | </ol>
| + | |
- | </div> | + | |
- | </div> | + | |
| | | |
- | <div class="pageSection2"> | + | .pageSection1 { |
- | <div class="pageData"> | + | background-color: #FFFFFF; |
- | <h2>Protocol 12: Sticky End ligation</h2>
| + | } |
- | <h3>Materials and Equipment</h3>
| + | |
- | Eppendorf, p10, tips, reaction buffer, dH2O, restricted DNA, T4 Ligase.
| + | |
- | <h3>Time</h3>
| + | |
- | Prep: 5 minutes<br/>
| + | |
- | Run: 30 minutes
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Make up eppendorfs containing the ligation mix, as follows:
| + | |
- | <ul>
| + | |
- | <li>2μ l reaction buffer.</li>
| + | |
- | <li>10ng insert.</li>
| + | |
- | <li>10ng plasmid.</li>
| + | |
- | <li>1μ l T4 ligase.</li>
| + | |
- | <li>Make up to 20μ l with dH2O.</li>
| + | |
- | </ul>
| + | |
- | </li>
| + | |
- | <li>Flick to mix and leave for 30 minutes.</li>
| + | |
- | </ol>
| + | |
- | </div>
| + | |
- | </div> | + | |
| | | |
- | <div class="pageSection1"> | + | .pageSection2 { |
- | <div class="pageData"> | + | background-color: #EBEBEB; |
- | <h2>Protocol 13: Restriction Digest</h2>
| + | } |
- | <h3>Materials and Equipment</h3>
| + | |
- | Eppendorf, p10, p100, tips, restriction enzymes, ice, heat block.
| + | |
- | <h3>Time</h3>
| + | |
- | Prep: 5 minutes<br/>
| + | |
- | Run: 1 hour
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>To each eppendorf add:
| + | |
- | <ol>
| + | |
- | <li>10 units of restriction enzyme 1 (usually 1μl).</li>
| + | |
- | <li>10 units of restriction enzyme 2 (usually 1μl).</li>
| + | |
- | <li>1μg DNA.</li>
| + | |
- | <li>5μl 10x buffer.</li>
| + | |
- | <li>Make up to 20μl with dH2O.</li>
| + | |
- | </ol>
| + | |
- | </li>
| + | |
- | <li>Flick to mix.</li>
| + | |
- | <li>Incubate at 37°c for 60 minutes.</li>
| + | |
- | <li>To stop the reaction, heat the sample to an appropriate temperature to inactivate the restriction enzyme used.</li>
| + | |
- | <li>Put on ice.</li>
| + | |
- | </ol>
| + | |
- | </div>
| + | |
- | </div> | + | |
| | | |
- | <div class="pageSection2"> | + | .socialMediaIcon { |
- | <div class="pageData"> | + | padding: 0px 0px; |
- | <h2>Protocol 14: Glycerol Stocks</h2>
| + | margin: 0; |
- | <i>Allows stocks of cells to be kept in the -80</i>
| + | } |
- | <h3>Materials and Equipment</h3>
| + | |
- | P1000 pipette, tips, eppendorf tubes, microwave, 100% glycerol, overnight cultures of cells.
| + | |
- | <h3>Time</h3>
| + | |
- | Prep: 5 minutes<br/>
| + | |
- | Run: 5 minutes
| + | |
- | <h3>Procedure</h3>
| + | |
- | <ol>
| + | |
- | <li>Take 800μl of overnight cells using a P1000 pipette and add into separate, labelled eppendorf tubes.</li>
| + | |
- | <li>Microwave the 100% glycerol for 5 seconds.</li>
| + | |
- | <li>Take 200μl of the glycerol using a P1000 pipette and add into each eppendorf tube.</li>
| + | |
- | <li>Place on ice immediately.</li>
| + | |
- | <li>Transfer to the -80°C freezer to be stored.</li>
| + | |
- | </ol>
| + | |
- | </div>
| + | |
- | </div> | + | |
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