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Mapping 250K/500K SNP assay

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PCR STAGING AREA<br />

appendix C | Low Throughput Protocol 255<br />

2. Aliquot 5.25 µL of the Ligation Master Mix into each digested<br />

DNA sample.<br />

Table C.5<br />

Reagent Volume/Sample<br />

Digested DNA 19.75 µL<br />

Ligation mix* 5.25 µL<br />

Total 25 µL<br />

* Contains ATP and DTT. Keep on ice.<br />

To expedite the aliquoting, the Ligation Master Mix can be first<br />

divided into 8 or 12 microwell strips and then dispensed into the<br />

wells of the plate with an 8-channel or 12-channel pipette. Pipet up<br />

and down for several times to mix. Be sure to change tips between<br />

samples.<br />

3. Cover the plate with plate cover and seal tightly, vortex at medium<br />

speed for 2 seconds, and spin at 2,000 rpm for 1 minute.<br />

4. Place the plate in a thermal cycler and run the <strong>500K</strong> Ligate<br />

program:<br />

<strong>500K</strong> Ligate Program<br />

Temperature Time<br />

16ºC 180 minutes<br />

70ºC 20 minutes<br />

4ºC Hold<br />

Store samples at –20°C if not proceeding to the next step within 60<br />

minutes.

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