# Corum:Digestion

(Difference between revisions)
 Revision as of 13:47, 26 July 2012 (view source)m (→Materials)← Previous diff Revision as of 13:47, 26 July 2012 (view source)m (→Procedure)Next diff → Line 22: Line 22: - *Lab standard double digestion uses 22 μL plasmid DNA, so V = (22 + 2)/0.8 μL = 30 μL. + *Lab standard double digestion uses X = 22 μL plasmid DNA, so V = (22 + 2)/0.8 μL = 30 μL. ** 22 μL plasmid DNA ** 22 μL plasmid DNA ** 3 μL 10X NEB Buffer Y ** 3 μL 10X NEB Buffer Y

## Overview

Standard DNA single or double digest of variable volume V using NEB restriction enzymes.

## Materials

• X μL DNA template
• 10X NEB Digestion Buffer Y (Y = 1, 2, 3, or 4)
• 10mg/ml BSA

## Procedure

1. Determine compatibility and reaction conditions using Double Digest Finder (double digest only).
2. Determine reaction volume V by computing V = [(X + 1)/0.8] μL (single digest) or V = [(X + 2)/0.8] μL (double digest).
• 0.1V 10X NEB Buffer Y (Y = 1, 2, 3, or 4)
• 0.1V 10mg/ml BSA
• 1 μL restriction enzyme 1
• 1 μL restriction enzyme 2 (double digest only)
4. Incubate 3 hr to overnight at reaction temperature given by NEB (standard = 37 °C).
5. Optional: Heat inactivate restriction enzyme(s) by incubation 80 °C 20 min. Not necessary when digestion product is going to be purified or gel extracted, as these procedures remove the enzymes.

• Lab standard double digestion uses X = 22 μL plasmid DNA, so V = (22 + 2)/0.8 μL = 30 μL.
• 22 μL plasmid DNA
• 3 μL 10X NEB Buffer Y
• 3 μL 10mg/ml BSA
• 1 μL restriction enzyme 1
• 1 μL restriction enzyme 2

## Notes

Please feel free to post comments, questions, or improvements to this protocol. Happy to have your input!

1. List troubleshooting tips here.
2. You can also link to FAQs/tips provided by other sources such as the manufacturer or other websites.
3. Anecdotal observations that might be of use to others can also be posted here.

## References

Relevant papers, books, and websites

1. New England Biolabs