| Glu − |
Gal + |
Glu − |
Gal + |
Very good sign |
Very good sign |
Work with these clones first. |
| Glu (+) |
Gal + |
Glu (+) |
Gal + |
Bait is up-regulated/mutated to a high background of transcriptional activation. |
GAL1 promoter is slightly leaky; both proteins are very stable; interaction occurs with high affinity. |
Take one clone for confirmation of interaction; store the rest. |
| Glu − |
Gal + |
Glu − |
Gal − |
Yeast mutation occurred that favors growth or transcriptional activation on galactose medium. |
Some bait/interactor combinations are known to activate lacZ versus LEU2 preferentially, or vice versa.
|
If all other candidates winnow out, check these clones. |
| All other phenotypes |
Contamination/plasmid rearrangements/mutations |
Something really new |
Trash. |