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Stuck Cannot Amplify Pcr Clone Need help urgently!

Stuck Cannot Amplify Pcr Clone Need help urgently! - Molecular Biology Techniques

Stuck Cannot Amplify Pcr Clone Need help urgently! - Molecular Biology Forum. Includes forums for common molecular biology techniques.


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Old 02-05-2013, 01:04 PM
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Default Stuck Cannot Amplify Pcr Clone Need help urgently!



Hi

I have been trying to clone a pcr product of 3065bp in pEF6V5 His TOPO vector. I have tried everything but couldnt amplify my product with normal taq. I have tried phusion (neb), recombinant taq (fermentas, sigma, invitrogen, intron biotech), dreamtaq (fermentas), platinum taq (invitrogen) and also Ex taq from takara but in vain as none gave any result. Thought phusion (neb) gives band of same size as required but it can not be cloned in TOPO due to 3'A missing.
based on many TOPO related forums i tried to standardize ploy A addition after amplifying my product with phusion (neb) but in vain!
What i am looking for is some taq polymerase or some way by which i can amplify my pcr product with any normal taq.
My primers are Fwd: 5 ACATGCTTTGGGACTGCCACTGA 3
Rev: 5 GCCGGCAATGGACGTGAACA 3

I am using 1x buffer, 2.5mM mgcl2, 1.25ul (0.5 uM) primers, 0.25mM dntp, 1U/ul Taq, 1ul (<500ng) template (cDNA) for a 25ul reaction.

The pcr conditions are
94 - 4 mins
94 - 45 secs
X - 30
72 - Y mins
72 - 10 mins
4 - hold

I have tried gradient of X from 55 to 68 but no result. And Y from 2 to 4 minutes but no result.

Pls suggest.
Thanks
Mansi

Last edited by admin; 02-09-2013 at 03:39 AM.
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