User:DrJones1935/18 July 2012
From 2012.igem.org
I. Agarose Gel Electrophoresis (AGE) of PCR Samples
- Make Gel:
- Measure out
0.5 g0.50497 g of agarose and add to a 250 mL E-flask - Add 50 mL of 0.5x TBE buffer and swirl to mix
- Cover flask with a Kimwipe and microwave for ~1 minute until clear
- Allow to cool to ~60 oC and pour into beaker for ethidium bromide (EtBr)
- Add 1 uL of EtBr stock to agarose and swirl to mix
- Immediately pour gel into tray with combs
- Allow to solidify, then remove the comb and tape and place the tray in the gel box with the wells closer to the black electrode
- Make sure it is submerged in fresh TBE buffer
- Measure out
- Load Gel:
- Mix samples as drops on a piece of parafilm
- Mix:
Ladder (NEB 2-log) | Blank | Sample |
---|---|---|
*5 uL DNA ladder *1 uL 6x Loading Dye | *8.3 uL dH2O *1.7 uL 6x Loading Dye | *6.3 uL dH2O *1.7 uL 6x Loading Dye *2.0 uL DNA |
- Load ~10 uL (except ladder which is ~6 uL) on gel according to the following chart:
Lane 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
NEB 2-log ladder | Blank | 1.1 | 1.2 | 2.1 | 2.2 | 3.1 | 3.2 | 4.1 | 4.2 | 5.1 | 5.2 | NEB 2-log ladder |
- Store DNA at 4 oC
- Run Gel:
- Close gel box and turn on power pack
- Run gel at 30 V for 20 min to stack gel
- Run gel at 75 V until the markers have reached near the bottom of the gel
- Image Gel:
- RESULTS:
Source: Media:Srk_2012-07-18.tif
Feature | Expected Size (bp) |
---|---|
Leftover pBR322 | 4361 |
Leftover pBAV1K-T5-gfp | 3653 |
pT5 promoter | 107 |
LacZ | 3137 |
CAT* | 729 |
tetr | 1246 |
T1 terminator | 94 |
I think that this ladder is unreliable because it puts our plasmid templates in the range of 6000-10000 bp which is incorrect. If we translate the ladder accordingly, it could be that reactions 3, 4 and 5 were successful. I will run the gel again with a 100 bp ladder to check on them.
II. Agarose Gel Electrophoresis (AGE) of PCR Samples
- Make Gel:
- Measure out
0.5 g0.503 g of agarose and add to a 250 mL E-flask - Add 50 mL of 0.5x TBE buffer and swirl to mix
- Cover flask with a Kimwipe and microwave for ~1 minute until clear
- Allow to cool to ~60 oC and pour into beaker for ethidium bromide (EtBr)
- Add 1 uL of EtBr stock to agarose and swirl to mix
- Immediately pour gel into tray with combs
- Allow to solidify, then remove the comb and tape and place the tray in the gel box with the wells closer to the black electrode
- Make sure it is submerged in TBE buffer
- Measure out
- Load Gel:
- Mix samples as drops on a piece of parafilm
- Mix:
Ladder (100 bp ladder) | Blank | Sample |
---|---|---|
*Premixed from Isaacs Lab | *8.3 uL dH2O *1.7 uL 6x Loading Dye | *6.3 uL dH2O *1.7 uL 6x Loading Dye *2.0 uL DNA |
- Load ~10 uL (except ladder which is ~6 uL) on gel according to the following chart:
Lane 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
---|---|---|---|---|---|---|---|---|---|---|---|
100 bp ladder | Blank | 1.1 | 1.2 | 2.1 | 2.2 | 3.1 | 3.2 | 4.1 | 4.2 | 5.1 | 5.2 |
- Store DNA at 4 oC
- Had a lot of trouble loading the gel due to my allergies. This may impact the quality of the image.
- Run Gel:
- Close gel box and turn on power pack
- Run gel at 30 V for 25 min to stack gel
- Run gel at 75 V until the markers have reached halfway down the gel
- Image Gel:
- RESULTS:
Source: Media:Srk_2012-07-18_2.tif