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
  1. 349.86ul of Phusion High-Fidelity PCR Master Mix
  2. 307.86ul of Ultrapure PCR grade water
  3. 9.03ul of 10uM FatP6 primer
  4. 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
  1. 266.56ul of Phusion High-Fidelity PCR Master Mix
  2. 234.56ul of Ultrapure PCR grade water
  3. 6.88ul of 10uM FatP6 primer
  4. 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 20220310_gel.jpg 20220310_gel2.jpg

Ethanol precipitation

  1. Add 3ul of 3M sodium acetate to each PCR reaction (1/10th the total volume)
  2. Add 99ul of ice cold 100% ethanol to each tube (3x the total volume)
  3. Transfer entire volume to a new labeled 1.5ml tube
  4. Place tubes in -80 freezer for about 30 minutes
  5. 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
  6. Pipette off the liquid without disturbing the pellet. It will most likely be invisible.
  7. Add 200ul of ice cold 70% Ethanol
  8. Spin for 5 minutes at 12,000rmp. This is to wash the pellet. Again make sure each tube is facing the same direction
  9. Pipette off the ethanol without disturbing the pellet
  10. Let dry at room temperature with the caps open for about 15 minutes or until all ethanol has evaporated
  11. 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