Recombination-assisted megaprimer (RAM) cloning

Autor: Jacques Mathieu, Emilia Alvarez, Pedro J.J. Alvarez
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: MethodsX, Vol 1, Iss C, Pp 23-29 (2014)
Druh dokumentu: article
ISSN: 2215-0161
DOI: 10.1016/j.mex.2014.05.001
Popis: No molecular cloning technique is considered universally reliable, and many suffer from being too laborious, complex, or expensive. Restriction-free cloning is among the simplest, most rapid, and cost-effective methods, but does not always provide successful results. We modified this method to enhance its success rate through the use of exponential amplification coupled with homologous end-joining. This new method, recombination-assisted megaprimer (RAM) cloning, significantly extends the application of restriction-free cloning, and allows efficient vector construction with much less time and effort when restriction-free cloning fails to provide satisfactory results. The following modifications were made to the protocol: • Limited number of PCR cycles for both megaprimer synthesis and the cloning reaction to reduce error propagation. • Elimination of phosphorylation and ligation steps previously reported for cloning methods that used exponential amplification, through the inclusion of a reverse primer in the cloning reaction with a 20 base pair region of homology to the forward primer. • The inclusion of 1 M betaine to enhance both reaction specificity and yield.
Databáze: Directory of Open Access Journals