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<h1> <b>Media Preparation (had to remake the Agar) </h1> </b> | <h1> <b>Media Preparation (had to remake the Agar) </h1> </b> | ||
<li>8x(200ml dH2O + 8g LB Agar).</li> | <li>8x(200ml dH2O + 8g LB Agar).</li> | ||
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<li>Aliquot 50 microL aliquots into 1.5mL sterile eppendorf tubes and store at -80 degrees C..</li> </p> | <li>Aliquot 50 microL aliquots into 1.5mL sterile eppendorf tubes and store at -80 degrees C..</li> </p> | ||
<p> | <p> | ||
+ | <p dir="ltr"> | ||
+ | Table of measured OD (during step 2): | ||
+ | </p> | ||
+ | <div dir="ltr"> | ||
+ | <table> | ||
+ | <colgroup> | ||
+ | <col width="*"/> | ||
+ | <col width="*"/> | ||
+ | <col width="*"/> | ||
+ | </colgroup> | ||
+ | <tbody> | ||
+ | <tr> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | Time (min) | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | OD600 batch 1 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | OD600 batch 2 | ||
+ | </p> | ||
+ | </td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 0 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 0 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 0 | ||
+ | </p> | ||
+ | </td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 15 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 0.043 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 0.047 | ||
+ | </p> | ||
+ | </td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 30 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 0.031 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 0.012 | ||
+ | </p> | ||
+ | </td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 45 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 0.065 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 0.005 | ||
+ | </p> | ||
+ | </td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 60 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 0.108 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | / | ||
+ | </p> | ||
+ | </td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 75 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 0.150 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | / | ||
+ | </p> | ||
+ | </td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 90 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | 0.422 | ||
+ | </p> | ||
+ | </td> | ||
+ | <td> | ||
+ | <p dir="ltr"> | ||
+ | / | ||
+ | </p> | ||
+ | </td> | ||
+ | </tr> | ||
+ | </tbody> | ||
+ | </table> | ||
+ | </div> | ||
+ | <p dir="ltr"> | ||
+ | NB: Calibrate with LB before inoculation, not with water. | ||
+ | </p> | ||
+ | <br/> |
Revision as of 17:23, 29 October 2017
Protocols
19/07/2017
Media Preparation:
LB agar Miller: 4 x 200 mL bottles
- Add 8 g of agar in scott bottle.
- Pour in 200 mL of distilled water.
- Gently shake.
- Autoclave at
- Store at room temperature.
LB broth Miller:
Media Preparation (had to remake the Agar)
-
25/07/17
- Pouring out agar plates..
- Streaking plates with E.coli..
- Put plates in incubation at 37’C for 15 hours max (put in at 6.08pm.). 26/07/17
- Pick single colony of the cells from the LB agar plate into 10 ml of LB media containing no antibiotics OR specific for cell type..
- Grew the cultures overnight at 37’C with shaking incubator at 250 rpm..
- 0.1 M MgCl2 solution: 2.033g of MgCl2 6H2O in 100 ml H20 in a 100ml Pyrex Bottle..
- 0.1 M CaCl2 solution: 11g of Cacl2 in 500ml H20 in a 500ml Pyrex Bottle..
- 50% Glycerol solution: 10 ml of glycerol & 10ml H20 in 20ml culture tube with screw cup, autoclave at 4’C.. 27/07/2017
- Inoculate 200 mL of pre-warmed to 37 degrees C LB medium (w/out antibiotics) with 10 mL of overnight E.coli cultures..
- Incubate at 37 degrees C for 60 min with vigorous shaking 250 rpm or until OD600 is 0.4-0.5..
- Put flask on ice for 30 min. At the same time chill sterile falcon tubes..
- Aliquot culture into 50 mL each falcon tube (4x50).
- Harvest cells by centrifugation for 7 min at 3,500 rpm at 4 degrees C and discard supernatant.
- Resuspend cells with 12.5mL of MgCl2.
- Centrifuge for 7 min at 3,500rpm at 4 degrees C and discard supernatant.
- Resuspend cells with 25 mL of CaCl2 then incubate on ice for 30 min..
- Centrifuge for 7min at 3,500rpm at 4 degrees C and discard supernatant.
- Resuspend cells with 700 microL of CaCl2 and 300 microL of 50% glycerol. Final volume 1 mL..
- Aliquot 50 microL aliquots into 1.5mL sterile eppendorf tubes and store at -80 degrees C..
Cultivating E.coli part 1
Cultivating E.coli part 2 (Round 1)
Pre pouring reagents for competent cells
Competent cells (Round 1)
Table of measured OD (during step 2):
Time (min) |
OD600 batch 1 |
OD600 batch 2 |
0 |
0 |
0 |
15 |
0.043 |
0.047 |
30 |
0.031 |
0.012 |
45 |
0.065 |
0.005 |
60 |
0.108 |
/ |
75 |
0.150 |
/ |
90 |
0.422 |
/ |
NB: Calibrate with LB before inoculation, not with water.