Re: [ccp4bb] about point mutation

2012-02-24 Thread Xiaodi Yu
try extension temperature 72 or 68 degree. You can get it. After PCR, using DpnI to treat your PCR product to get rid of the template plasmid. Yu Xiaodi > Date: Fri, 24 Feb 2012 09:05:40 + > From: arungreenlo...@gmail.com > Subject: [ccp4bb] about point mutation > To: CCP4BB@JISCM

Re: [ccp4bb] about point mutation

2012-02-24 Thread Dima Klenchin
Phusion requires that the primers are phosphorylated for mutagensis to work, unlike Pfu. If you cannot phosphorylate them use Pfu as recommended by Charlotte Not really. Phusion *protocol* requires phosphorylated primers but seemingly the only reason for that is that they needed to find a way

Re: [ccp4bb] about point mutation

2012-02-24 Thread D Bonsor
Phusion requires that the primers are phosphorylated for mutagensis to work, unlike Pfu. If you cannot phosphorylate them use Pfu as recommended by Charlotte Dan

Re: [ccp4bb] about point mutation

2012-02-24 Thread Charlotte Hodson
Dear Arun, I find stratagene method using Pfu turbo enzyme much more successful then using phusion. If you go to their website they even have a tool to design the 'perfect' primer! Happy cloning! On 24/02/2012 10:54, "Tim Gruene" wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Dear Ar

Re: [ccp4bb] about point mutation

2012-02-24 Thread Tim Gruene
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Dear Arun, it's been a while for my last PCR, so take my comment with caution: 33bases seems very long for a primer especially if it is only for a point mutation. Could you trim it down to 20-25 bases? I would cut at the downstream side. Tim On 02/24

[ccp4bb] about point mutation

2012-02-24 Thread Arun Kumar
can any one help me in suggesting that what mistake i have did in my mutagenic pcr . actually my problem is my primer annealing temperature is 81degree. im using phusion pol enzyme. i have made many trial, i.e., made annealing at 68 and then followed 2 step pcr method and then added 1micro lit o