Table 1.
Strains
| Name | Plasmotype | genotype |
| AT1 | [psi-] | MATa ade1-14 leu2Δ0 ura3-197 (Trp197-to-UGA) his3Δ200 trp1-289 |
| AT3 | [PSI+] | MATa ade1-14 leu2Δ0 ura3-197 his3Δ200 trp1-289 |
| NPK151 | [PSI+] | MATα ade1-14 leu2-3,112 ura3-52 trp1-289 |
| NPK175 | [psi-] | MATα ade1-14 leu2-3,112 ura3-52 trp1-289 |