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PCR Purification

Goal

The aim of the PCRpurification step is to recover DNA from PCR and other enzymatic reacti mixtures.

Preparation

Protocol adapted from Thermo Scientific PCR Purification notebook

1.
Add 1:1 volume of Binding Buffer to completed PCR mixture (e.g. if you have 100 µL of reaction mixture, add 100 µL of Binding Buffer). Mix thoroughly and check the solution's color: a yellow color color indicates an optimal pH for DNA binding.
If the color of the solution is orange or violet, add 10 µL of 3 M sodium acetate, pH 5,2 and mix. The color will become yellow.
If the DNA fragment is superior to 500 bp, add a 1:2 volume of 100% isopropanol (e.g. if you have 100 µL of PCR mixture combined with 100 µL (total amount of 200 µL), add 100 µL isopropanol). Mix thoroughly.

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Test