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Gibson assembly interposition improves amplification efficiency of long DNA and multifragment overlap extension PCR.

Junyi Liu,Fang Liu,Xueer Luo,Ming Chen,Chengjun Wang,Liuyue Wang,Huabo Chen

Published 2023 in BioTechniques

ABSTRACT

For difficult overlap extension PCR, a Gibson assembly process was inserted between the two PCR rounds to facilitate the formation of complete gene templates at a moderate temperature. That is, after amplifying each DNA fragment, they were preluded by a Gibson assembly process in equal proportion. Then, the assembled mixture was used as a template for the second PCR round. This idea was tested and verified by taking the cloning example of a single and a double site mutation of the retinoblastoma gene. This scheme associates overlap extension PCR with Gibson assembly exquisitely, significantly improving gene amplification efficiency, particularly in the fusion of long genes and multifragments using overlap extension PCR.

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