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extraa bases before RE site


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#1 AmrutaK

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Posted 31 May 2011 - 09:31 PM

Hello everyone!

I have a basic doubt what if I dont keep any extra bases before the restriction site.. Would this create any problems in cloning of PCR products..

Please reply fast! As I am facing this problem.. but not sure whether it is because of this..

#2 kajmak

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Posted 01 June 2011 - 01:19 AM

If you are digesting your pcr product before ligation, maybe. Some enzymes need few extra bases to 'land on'.
If you are cloning pcr ptoduct into simple vector as pGem t easy, no.
Also depends which polymerase you are using, some eat the ends of primers if you take your time seting up the reaction.




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