TABLE 3.

Ptr2p-GFP expression and localization in 103 identified strains with decreased or increased dipeptide utilization

Phenotypic category	Increased dipeptide utilization (46 strains)	Decreased dipeptide utilization (57 strains)
Strains with enhanced Ptr2p-GFP expression	arp5, arp8, cup9, csm1, dbr1, eaf3, hal9, ies6, kem1, mrps9, pat1, sfp1, srb8, ssd1, ssn2, ssn3, ssn8, tom72, ubr2, yor322c, ynl123w, yfr044c, ylr114c	asm4, ydr015c, ydr290w
Strains with altered Ptr2p-GFP localization	bni1, def1, eaf7, lst4, npr1, sac6, snf7, srn2, tpm1, vam10, vps8, vps36, ypl073c, ynl295w	bem4, bud32, csf1, etr1, gcv2, gcv3, hfm1, ilm1, isa1, isa2, mck1, mre11, npl3, shp1, reg1, rmd12, rps9b, tsa1, vbm1, ydr433w, yjl046w, ydr157w, yjl175w
Strains with no apparent effect on Ptr2p-GFP localization or expression	cik1, kti12, mlh1, mrp17, pho2, rim101, tif3, ybt1, ydr417c	bud28, bye1, elf1, hfa1, ira2, lat1, lpd1, mct1, oar1, pdb1, pdx1, prd1, rad23, spo21, ypl098c
Strains with decreased Ptr2p-GFP expression	No mutant strains were found in this category.	dal81, hof1, ipk1, nfu1, pho85, ptr1, rpl21a, rpn4, shm2, stp2, taf14, thp1, uba3, ubp14, ubc2, ypr174c

Ptr2p-GFP expression and localization in the underlined strains are shown in Figures 3 and 4. The underlined strains were the representatives chosen to highlight in the results section. Ptr2p-GFP expression and localization of all the listed strains are shown in supplemental Figures S1 and S3 at http://www.genetics.org/supplemental/. The strains in boldface type (cup9, dal81, ptr1, stp2, and ubc2) contain the deleted genes previously identified as being involved in regulation of PTR2 transcription.