Jump to content

  • Log in with Facebook Log in with Twitter Log in with Windows Live Log In with Google      Sign In   
  • Create Account

Submit your paper to J Biol Methods today!
Photo
- - - - -

If a 20bp primer differs from template DNA by 20bp, can PCR work?


  • Please log in to reply
1 reply to this topic

#1 humalog

humalog

    member

  • Active Members
  • Pip
  • 22 posts
0
Neutral

Posted 28 August 2010 - 01:26 PM

Hi

I was trying to PCR-amplify using a primer of around 20bp and it work.
Now when I check my data it seems to me that the primer they gave me to work with has a difference of 7bp in relation to the template DNA.

I wanted to ask if 7bp difference between primer and DNA template should normally make the PCR not work. In this case I might have entered the data (the primer sequence) in my notebook incorrecly.
Or would the PCR still work with the 7bp difference?

Edited by humalog, 28 August 2010 - 01:27 PM.


#2 HomeBrew

HomeBrew

    Veteran

  • Global Moderators
  • PipPipPipPipPipPipPipPipPipPip
  • 930 posts
15
Good

Posted 28 August 2010 - 01:35 PM

It depends on where the differences are and on your PCR conditions -- generally speaking, if the differences at the 3' end, it will not work, if they're in the middle or scattered through out the primer it might work, and if they're at the 5' end, it will work.




Home - About - Terms of Service - Privacy - Contact Us

©1999-2013 Protocol Online, All rights reserved.