Four clones at least were picked from each transformation. Validation PCR was performed using a common forward primer from the 3′ end of the SWAT modules (S4 reverse complement), and a gene specific reverse primer from the gene coding sequence. All four clones were imaged via a high-content screening platform in bright-field and GFP channels (see below). Images of all clones were reviewed manually, and up to three localizations were assigned to each clone. Assignments were: Ambiguous; Below threshold; Bud; Bud neck; Cell periphery; Cytosol; ER; Mitochondria; Nuclear periphery; Nucleolus; Nucleus; Punctate; Vacuole; Vacuole membrane. Only strains with a duplicate repeating localization assignment and validated by PCR were chosen to compose the SWAT-GFP and SWAP-SP-GFP collections.