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Gel extraction of the manganese-gradient epPCR product, Gibson assembly, and transformation

Wet lab Both projects Confirmed

Contributors: Tank, Esther

Gel extraction (pp. 159–160)

Gel slices for the three manganese conditions selected on 4 September (0.01, 0.02, 0.05 mM MnCl₂), plus a “Without Gel” comparison column.

0.010.020.05Without Gel
Gel weight0.255 g0.313 g0.201 g(scribbled out)
Buffer255 µl313 µl201 µl(scribbled out)
“+2x”510 µl626 µl402 µl–

An additional unlabelled row of four numbers appears above this table in the original: 1.240, 1.298, 1.186, 0.985 — not identified in the source as to what they measure.

Nanodrop results

The original is a grid with three stacked numbers per cell (conc., 260/280, 260/230, unlabelled) under three readings; several entries are scribbled out and the exact row/column alignment could not be reconstructed reliably from the transcription alone. Reproduced here in the order recorded, grouped by reading, rather than forced into a table that might misassign a number to the wrong condition.

  • Reading 1: 0.01 → scribbled out, scribbled out; 0.02 → possibly 15.092 (unclear), 45.283; 0.05 → 2.302, 0.096 [?]
  • Reading 2: 0.01 → 36.561, 1.838, 0.058; 0.02 → 66.128, 1.669, 0.129; 0.05 → (empty)
  • Reading 3: 0.01 → 3.086, 2.287, 0.005; 0.02 → 2.922, 2.368, 0.007; 0.05 → 2.031, 2.865, 0.004

Gibson assembly of this product

  • 5 µl HiFi
  • 5 µl Taq product
  • 0.25 µl vector PCR
  • 50 °C for 15 minutes
  • 2.5 µl into commercial competent cells (25 µl)

Transformation (p. 160)

  • Ice, 30 minutes ✓
  • 42 °C, 30 seconds ✓
  • Ice, 2 minutes ✓
  • 500 µl SOC, 250 rpm, 1 hour ✓ (handed off to Heather)
  • Spread 50 µl + plate the rest ✓ (handed off to Heather)
  • Grown overnight