Adapted from a protocol I got from Kelly Bode
Note: If you use the custum primer version of T3/T7 you have to reprecipitate the DNA to get rid of the NH4+ salts as they inhibit the reaction.
|T3 or T7 primer (10 pmoles or 100 ng)||X µl|
|5X Forward Rxn Buffer (Gibco-BRL)||5.0 µl|
|T4 Polynucleotide Kinase (Gibco BRL) (5 U/ul)||2.0 µl|
|[gamma-32P]ATP Amersham -20° (clear)||5.0 µl|
- Incubate at 37° for 10 minutes (Note – Kelly says that times greater than 10 minutes are only useful for getting no results). Stop the rxn with 1 µl of 0.5 M EDTA.
- Meanwhile, you have been prehybing your filter. Add the probe directly to 7 ml of hyb solution. Incubate for at least 2 hours at 42°.
- Wash 2 times for 7 minutes each with 2X SSPE, 0.2% SDS at room temperature.
- Put on film overnight. There will be a certain amount of background.
This page is, as always, Copyright (c) 1997 by Craig D. Amundsen. All rights reserved.