Yeast genomic DNA and template plasmids were isolated
using EasyPure Genomic DNA Kit (TransGen Biotech, BeijingChina) and TIANprep Mini Plasmid Kit (TIANGEN,
Beijing, China), respectively. The PCR primers are listed in
Supplementary Table 2 and all products were purified using
GeneJET PCR Purification Kit (Thermo Scientific, Lithuania,
EU). Preparation of yeast competent cells and the detailed
protocol for transformation is described elsewhere [11].
200 ng of each purified PCR product fragment mixed together
with 80 ml competent cells were used for transformation, and
yeast colonies were selected on SC-Ura plates incubated for
2e3 days at 30 C.