20220310 mtORF PCR and ethanol precipitation of Pocillopora
mtORF PCR of Pocillopora
Loosely based off of this protocol.
Diluted the genomic data 1:10 with PCR grade water in strip tubes to help reduce any inhibitors that might be in the sample. Not worried about final concentration.
Setting up two separate PCR reactions since I have so many samples. First PCR had 18 samples plus a positive and negative control. The Second PCR had 13 samples plus a positive and negative control Used tube number 253 as the positive control for both
- First PCR Samples:
- Positive control- 253
- Negative control
- 69
- 71
- 73
- 75
- 79
- 81
- 83
- 87
- 89
- 95
- 99
- 101
- 103
- 117
- 133
- 137
- 155
- 159
Made 21 total PCR reactions
- 349.86ul of Phusion High-Fidelity PCR Master Mix
- 307.86ul of Ultrapure PCR grade water
- 9.03ul of 10uM FatP6 primer
- 9.03ul of 10uM RORF primer
- 32ul of MM into each strip tube and 1ul of the diluted gDNA
-
Spun down tubes briefly
- Second PCR Samples:
- Positive control- 253
- Negative control
- 161
- 179
- 183
- 189
- 199
- 205
- 213
- 221
- 239
- 255
- 257
- 259
- 265
Made 16 total PCR reactions
- 266.56ul of Phusion High-Fidelity PCR Master Mix
- 234.56ul of Ultrapure PCR grade water
- 6.88ul of 10uM FatP6 primer
- 6.88ul of 10uM RORF primer
- 32ul of MM into each strip tube and 1ul of the diluted gDNA
- Spun down tubes briefly
Gel
- Modified from this protocol
- Added 0.50g of agarose and 50ml of 1x TAE to flask and microwaved for 45 seconds. This makes a 1.0% gel
- Once cool enough to touch added 5ul of gel red stain
- Swirled and poured into gel mould with comb
- Once solidified, covered with 1X TAE as a running buffer
- Added 1ul of purple loading dye to a piece of parafilm and then added 3ul of PCR product.
- Gel ran for 30 minutes at 80V
Ethanol precipitation
- Add 3ul of 3M sodium acetate to each PCR reaction (1/10th the total volume)
- Add 99ul of ice cold 100% ethanol to each tube (3x the total volume)
- Transfer entire volume to a new labeled 1.5ml tube
- Place tubes in -80 freezer for about 30 minutes
- Spin for 30 minutes at 12,000rpm. Make sure all the tubes are facing the same way. The DNA will pellet on the back wall
- Pipette off the liquid without disturbing the pellet. It will most likely be invisible.
- Add 200ul of ice cold 70% Ethanol
- Spin for 5 minutes at 12,000rmp. This is to wash the pellet. Again make sure each tube is facing the same direction
- Pipette off the ethanol without disturbing the pellet
- Let dry at room temperature with the caps open for about 15 minutes or until all ethanol has evaporated
- Add 30ul of either Tris or water to the pellet and pipette up and down to resuspend
Nanodrop
DNA | ng/ul |
---|---|
69 | 266.5 |
71 | 273.3 |
73 | 161.6 |
75 | 201.6 |
79 | 275.0 |
81 | 265.5 |
83 | 217.2 |
87 | 221.7 |
89 | 218.5 |
95 | 55.2 |
99 | 258.0 |
101 | 178.6 |
103 | 203.6 |
117 | 204.7 |
133 | 203.4 |
137 | 227.7 |
155 | 245.7 |
159 | 229.8 |
161 | 230.7 |
179 | 236.0 |
183 | 284.5 |
189 | 217.4 |
199 | 268.4 |
205 | 214.3 |
213 | 255.8 |
221 | 266.9 |
239 | 238.7 |
255 | 229.0 |
257 | 260.6 |
259 | 244.7 |
265 | 207.4 |
Sequencing
- had to dilute the DNA 1:10 so it would have a low enough concentration to set up the samples up for sequencing. I did not re-nanodrop the samples after diluting
- Set up all samples in both directions in a 96 well plate.
Written on March 10, 2022