A method for introducing random single point deletions in specific DNA target sequences using oligonucleotides
- 1 January 1989
- journal article
- research article
- Published by Oxford University Press (OUP) in Nucleic Acids Research
- Vol. 17 (11) , 4015-4023
- https://doi.org/10.1093/nar/17.11.4015
Abstract
We describe a method for the generation of random point deletions in any target DNA sequence using synthetic mixed oligonucleotides. A mixed pool of oligonucleotides, which contain single nucleotide deletions randomly distributed throughout the full length, was generated by a modification of the synthesis cycle of an automated DNA synthesiser that allowed the inefficient incorporation of nucleotide monomers during each cycle of synthesis. A family of oligonucleotides was used to prime in vitro synthesis of the complementary strand of a cloned DNA fragment in an M13 vector which had previously been passaged through a dut-, ung- Escherichia coli host. Strong selection for progeny from the newly synthesised strand is provided by transforming the heteroduplex into a dut+, ung+ host. This procedure introduced point deletions at 10-25% efficiency. It has been used to introduce point deletions into operator sequences which bind the yeast regulatory proteins encoded by MAT.alpha.1 and MAT.alpha.2.This publication has 29 references indexed in Scilit:
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