Cellular distribution of Ure2-GFP fusion
proteins. Into strains YHE64 (3686[URE3]) and 3686[ure-o] were
introduced pVTG12 (CEN LEU2 PURE2 URE2N-GFP)
(Top), pVTG13 (CEN LEU2 PURE2
GFP-URE2C) (Middle), and pH327 (CEN LEU2
PURE2 URE2-GFP) (Bottom). [ure-o], transformant of 3686[ure-o];
[URE3], transformant of YHE64 that retained [URE3]; GuHCl,
transformant of YHE64 that was initially [URE3] but was cured by
growth in the presence of 5 mM guanidine HCl. Phase contrast pictures
of only the cells with pH327 (Bottom) are shown. The
second row of pictures shows further examples of [URE3] cells with
pVTG12.