Protocol for BigDye

Preparing sequencing samples:

  1. Combine the following in a 0.2ml PCR tube:
    250-500ng DNA/sample,
    2.2pmol primer/sample,
    add PCR water to total volume of 8ul.

  2. Add 4ul per sample of Master Mix (see recipe below).
    Big Dye v3.1: 2 ul
    Big Dye dilution buffer 2 ul

  3. Run the sample in a ThermalCycler using the BigDye protocol as follows:
    Step 1 Incubate at 96.0C for 20 seconds
    Step 2 Incubate at 50.0C for 20 seconds
    Step 3 Incubate at 60.0C for 4 minutes
    Step 4 Repeat to Step 1 for 39 times
    Step 5 Incubate at 12.0C forever
    Step 6 End

  4. Clean up the reaction with various methods.
    Quantity of template DNA varies depending on the size of fragment.

Template size:
 Quantity  
 100-200bp 15-30ng
 500bp 30-65ng
 1000bp 65-130ng
 2000bp 125-250ng
 3000bp 250-500ng

Big Dye dilution buffer:
 Tris-HCl,pH8.8 400mM
 MgCl2 10mM

Protocol adapted from http://www.osa.sunysb.edu/dna/faq.html.

© Copyright 2005. All rights reserved. Contact: Fumio