A highly efficient procedure for site-specific mutagenesis of full-length plasmids using Vent DNA polymerase.

  1. S Byrappa,
  2. D K Gavin, and
  3. K C Gupta
  1. Rush-Presbyterian-St. Luke's Medical Center, Department of Immunology/Microbiology, Chicago, Illinois 60612, USA.

Abstract

Careful titration of Vent polymerase activity allows efficient amplification of full-length plasmids (12 kb). The high processivity and fidelity of this enzyme made oligonucleotide-directed site-specific mutagenesis of plasmids a straight-forward process. Using only two primers, a mutagenic and a complementary, single-base mutants of recombinant plasmids were obtained consistently with > 90% efficiency from a single round of PCR. This procedure also made site-specific deletion, insertion, and several bases mutagenesis facile and efficient.

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