Current Genetics

, Volume 16, Issue 5, pp 339–346

High efficiency transformation of intact yeast cells using single stranded nucleic acids as a carrier

  • Robert H. Schiestl
  • R. Daniel Gietz
Original articles

DOI: 10.1007/BF00340712

Cite this article as:
Schiestl, R.H. & Gietz, R.D. Curr Genet (1989) 16: 339. doi:10.1007/BF00340712


A method, using LiAc to yield competent cells, is described that increased the efficiency of genetic transformation of intact cells of Saccharomyces cerevisiae to more than 1 × 105 transformants per microgram of vector DNA and to 1.5% transformants per viable cell. The use of single stranded, or heat denaturated double stranded, nucleic acids as carrier resulted in about a 100 fold higher frequency of transformation with plasmids containing the 2μm origin of replication. Single stranded DNA seems to be responsible for the effect since M13 single stranded DNA, as well as RNA, was effective. Boiled carrier DNA did not yield any increased transformation efficiency using spheroplast formation to induce DNA uptake, indicating a difference in the mechanism of transformation with the two methods.

Key words

YeastTransformationss carrier DNA

Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • Robert H. Schiestl
    • 1
  • R. Daniel Gietz
    • 1
  1. 1.Department of BiologyUniversity of RochesterRochesterUSA
  2. 2.Department of BiologyUniversity of North CarolinaChapel HillUSA
  3. 3.Department of Human Genetics, Faculty of MedicineUniversity of ManitobaWinnipegCanada