SYSTEM AND METHOD OF MODULAR CLONING

摘要

System for producing a nucleic acid construct of interest, said system comprising: a set of n entry DNAs numbered 1 to n, n being an integer of at least 2, each of said n entry DNAs comprising in this order: (i) a type lIs restriction endonuclease recognition site followed by the cleavage site thereof; (ii) a sequence portion linking the cleavage site of said recognition site of item (i) with the cleavage site of the recognition site of the following item (iii), and (iii) a cleavage site of a further type Ms restriction endonuclease recognition site followed by the recognition site of said cleavage site; the cleavage sites of the type lIs restriction endonuclease recognition sites of item (iii) of entry DNAs 1 to n-1 are complementary to the cleavage sites of the type lIs restriction endonuclease recognition sites of item (i) of entry DNAs 2 to n, respectively; the cleavage site of the type Ms restriction endonuclease recognition site of item (iii) of entry DNA n is complementary to the cleavage site of the type lIs restriction endonuclease recognition site of item (i) of entry DNA 1 for allowing annealing of complementary single-stranded overhangs formed by restriction at recognition site (i) of entry DNA 1 and at recognition site (iii) of entry DNA n; said system further comprising a destination vector comprising in this order: (I) a type Ms restriction endonuclease recognition site followed by the cleavage site thereof; (II) a vector backbone preferably comprising a selectable marker gene, said vector backbone linking the cleavage sites of said recognition sites of items (I) and the following item (III); (III) a further cleavage site of a type Ms restriction endonuclease recognition site followed by the recognition site of said cleavage site, and (IV) optionally, an insert between the recognition sites of item (III) and item (i); said cleavage sites of items (I) and (III) being different and non-complementary, said recognition sites of items (I) and (III) being preferably recognitions sites of the same endonuclease.