prom1 mutants exhibit fused rhabdomeres, with a marked loss of inter-rhabdomeral space.
prom1 mutant adults have eyes with apparently normal microvilli. However, these eyes show a striking failure of the rhabdomeres to separate from each other, including a marked loss of inter-rhabdomeral space, irregular rhabdomere morphology and improper rhabdomeral contacts.
eycprom-1 mutant adults have eyes with apparently normal microvilli. However, these eyes show a striking failure of the rhabdomeres to separate from each other, including a marked loss of inter-rhabdomeral space, irregular rhabdomere morphology and improper rhabdomeral contacts.
In the eyes of eycprom-1 flies, almost all of the rhabdomeres fail to separate from one another, so that in most ommatidia only one cluster of rhabdomeres can be observed instead of 7 individual rhabdomeres.
In the eyes of prom1 flies, almost all of the rhabdomeres fail to separate from one another, so that in most ommatidia only one cluster of rhabdomeres can be observed instead of 7 individual rhabdomeres.
eys1, prom[+]/prom1 has retina phenotype, enhanceable by +/Df(1)ED6829
eys1, prom[+]/prom1 has retina phenotype, enhanceable by Act5CG0245/Act5C[+]
eys1, prom[+]/prom1 has retina phenotype, enhanceable by zipHMS01618/Scer\GAL4GMR.PU
eys1, prom[+]/prom1 has retina phenotype, enhanceable by zipDN.UAS.GFP/Scer\GAL4GMR.PU
eys1, prom[+]/prom1 has retina phenotype, enhanceable by sqhHMS00437/Scer\GAL4GMR.PU
eys1, prom[+]/prom1 has retina phenotype, enhanceable by snaHMS01252/Scer\GAL4GMR.PU
eys1, prom[+]/prom1 has retina phenotype, enhanceable by Rho1JF02809/Scer\GAL4GMR.PU
eys1, prom[+]/prom1 has retina phenotype, enhanceable by RokJF03225/Scer\GAL4GMR.PU
eys1, prom[+]/prom1 has retina phenotype, enhanceable by MbsN300.UAS/Scer\GAL4GMR.PU
chp[+]/chp2, prom1 has ommatidium phenotype, enhanceable by eys[+]/eys1
chp2, eyc[+]/prom1 has rhabdomere phenotype, enhanceable by eys[+]/eys1
chp2, eyc[+]/prom1 has ommatidium phenotype, enhanceable by eys[+]/eys1
chp[+]/chp2, prom1 has rhabdomere phenotype, enhanceable by eys[+]/eys1
prom1 has rhabdomere of eye photoreceptor cell phenotype, suppressible by crb11A22
eys[+]/eys1, prom1 has rhabdomere of eye photoreceptor cell phenotype, suppressible by crb11A22/crb[+]
eys1, prom[+]/prom1 has retina phenotype, suppressible by sqhE20E21.UAS.cCa/Scer\GAL4Pph13.1.6/Scer\GAL4GMR.PU
prom1 has rhabdomere phenotype, suppressible by Hsap\PROM1UAS.cNa/Scer\GAL4GMR.PF
prom1 has eye phenotype, suppressible by Hsap\PROM1UAS.cNa/Scer\GAL4GMR.PF
prom1 has rhabdomere phenotype, suppressible by Hsap\PROM1ΔC.UAS.GFP/Scer\GAL4GMR.PF
prom1 has eye phenotype, suppressible by Hsap\PROM1ΔC.UAS.GFP/Scer\GAL4GMR.PF
eys1, prom1 has rhabdomere phenotype, suppressible by Hsap\PROM1UAS.cNa/Scer\GAL4GMR.PF/Hsap\EYSUAS.cNa
eys1, prom1 has eye phenotype, suppressible by Hsap\PROM1UAS.cNa/Scer\GAL4GMR.PF/Hsap\EYSUAS.cNa
prom1 has rhabdomere phenotype, suppressible by chp[+]/chp2
prom1 has ommatidium phenotype, suppressible by chp[+]/chp2
prom1 has rhabdomere phenotype, non-suppressible by Scer\GAL4GMR.PF/Hsap\PROM1mut1-7.UAS
prom1 has eye phenotype, non-suppressible by Scer\GAL4GMR.PF/Hsap\PROM1mut1-7.UAS
prom1 has rhabdomere phenotype, non-suppressible by Hsap\PROM1R373C.UAS/Scer\GAL4GMR.PF
prom1 has eye phenotype, non-suppressible by Hsap\PROM1R373C.UAS/Scer\GAL4GMR.PF
eys[+]/eys1, prom1 has rhabdomere of eye photoreceptor cell phenotype
eys1, prom1 has rhabdomere phenotype
eys1, eyc[+]/prom1 has ommatidium phenotype
eys1, eyc[+]/prom1 has rhabdomere phenotype
The prom1 ommatidia phenotype is largely suppressed by crb11A22. Most of the rhabdomeres are individualised and a single, continuous inter-rhabdomeral space is formed.
Flies trans-heterozygous for prom1 and eys1 show partial fusion of rhabdomeres. The phenotype is variable along the length of the retina.
The prom1/+, eys1/+ fusion phenotype is suppressed along the entire length of the rhabdomeres by heterozygous crb11A22.
One copy of both eys1 and prom1 results in a partial failure to form a continuous open inter-rhabdomeral space (retinal lumen), exhibited by the presence of juxtaposed rhabdomeres. This phenotype is significantly enhanced by one copy of either Df(1)ED6829 or Act5CG0245.
Expression of zipHMS01618 under the control of Scer\GAL4GMR.PU enhances the rhabdomere fusion seen in eys1 prom1 double heterozygotes.
Expression of zipDN.Scer\UAS.T:Avic\GFP under the control of Scer\GAL4GMR.PU enhances the rhabdomere fusion seen in eys1 prom1 double heterozygotes.
Expression of sqhHMS00437 under the control of Scer\GAL4GMR.PU enhances the rhabdomere fusion seen in eys1 prom1 double heterozygotes.
Expression of sqhE20E21.Scer\UAS.cCa under the control of Scer\GAL4GMR.PU and Scer\GAL4Pph13.1.6 suppresses the rhabdomere fusion seen in eys1 prom1 double heterozygotes.
Expression of snaHMS01252 under the control of Scer\GAL4GMR.PU enhances the rhabdomere fusion seen in eys1 prom1 double heterozygotes.
Expression of Rho1JF02809 under the control of Scer\GAL4GMR.PU enhances the rhabdomere fusion seen in eys1 prom1 double heterozygotes.
Expression of RokJF03225 under the control of Scer\GAL4GMR.PU enhances the rhabdomere fusion seen in eys1 prom1 double heterozygotes.
Expression of MbsN300.Scer\UAS under the control of Scer\GAL4GMR.PU enhances the rhabdomere fusion seen in eys1 prom1 double heterozygotes.
Although the rhabdomere phenotype is recessive in eys1 and eycprom-1 single mutants, eys1/+, eycprom-1/+ double mutant eyes show a failure of rhabdomere separation and loss of a continuous inter-rhabdomeral space.
eycprom-1/eycprom-1; chp2/+ double mutant flies show suppression of the eycprom-1/eycprom-1 rhabdomeral phenotype. However, in eycprom-1/eycprom-1, eys1/+; chp2/+ flies the rhabdomeres are stuck together, so the mild eycprom-1/eycprom-1; chp2/+ phenotype is enhanced in eycprom-1/eycprom-1, eys1/+; chp2/+ flies.
Although the rhabdomere phenotype is recessive in eys1 and prom1 single mutants, eys1/+, prom1/+ double mutant eyes show a failure of rhabdomere separation and loss of a continuous inter-rhabdomeral space.
prom1/prom1; chp2/+ double mutant flies show suppression of the prom1/prom1 rhabdomeral phenotype. However, in prom1/prom1, eys1/+; chp2/+ flies the rhabdomeres are stuck together, so the mild prom1/prom1; chp2/+ phenotype is enhanced in prom1/prom1, eys1/+; chp2/+ flies.
In prom1/prom1; chp2/+ double mutant flies, the proportion of flies with one aberrant fused cluster of rhabdomeres per ommatidium is smaller than in prom1/prom1 single mutants. In the double mutant flies, some ommatidia show the wild-type pattern of 7 individual rhabdomeres, while most ommatidia show between 2 and 5 individual rhabdomeres, and a small proportion show one fused cluster of rhabdomeres. In prom1/prom1, eys1/+; chp2/+ triple mutant flies, the rescue of the prom1/prom1 phenotype is reduced compared to the prom1/prom1; chp2/+ flies, with most ommatidia in the triple mutants showing between 0 and 3 individual rhabdomeres and no ommatidia showing more than 3 individual rhabdomeres.
In eycprom-1/eycprom-1; chp2/+ double mutant flies, the proportion of flies with one aberrant fused cluster of rhabdomeres per ommatidium is smaller than in eycprom-1/eycprom-1 single mutants. In the double mutant flies, some ommatidia show the wild-type pattern of 7 individual rhabdomeres, while most ommatidia show between 2 and 5 individual rhabdomeres, and a small proportion show one fused cluster of rhabdomeres. In eycprom-1/eycprom-1, eys1/+; chp2/+ triple mutant flies, the rescue of the eycprom-1/eycprom-1 phenotype is reduced compared to the eycprom-1/eycprom-1; chp2/+ flies, with most ommatidia in the triple mutants showing between 0 and 3 individual rhabdomeres and no ommatidia showing more than 3 individual rhabdomeres.
Expression of Hsap\EYSScer\UAS.cNa and Hsap\PROM1Scer\UAS.cNa in eys1, prom1 double mutants results in rescue of the eye phenotype, with separation of the rhabdomeres and the presence of inter-rhabdomeral space.
Expression of Hsap\PROM1Scer\UAS.cNa in photoreceptor cells under the control of Scer\GAL4Pph13 or Scer\GAL4GMR.PF suppresses the prom1 mutant phenotype.
Expression of Hsap\PROM1mut1-7.Scer\UAS in the developing eye under the control of Scer\GAL4GMR.PF fails to suppress the prom1 mutant eye phenotype.
Expression of Hsap\PROM1ΔC.Scer\UAS.T:Avic\GFP in the developing eye under the control of Scer\GAL4GMR.PF suppresses the prom1 mutant eye phenotype.
Expression of Hsap\PROM1R373C.Scer\UAS in the developing eye, under the control of Scer\GAL4GMR.PF, is not sufficient to suppress the rhabdomere phenotype in prom1 mutants.
prom1 is rescued by promUAS.cNa/Scer\GAL4GMR.PF
prom1 is rescued by promΔC.UAS.GFP/Scer\GAL4Pph13.1.6
prom1 is partially rescued by promUAS.cZa/Scer\GAL4hs.PB
prom1 is not rescued by Scer\GAL4Pph13.1.6/prommut1-4.UAS
FlyBase curator comment: The prom1 allele was previously referred to as "eycprom-1" in FlyBase due to confusion over which transcription unit corresponds to the "eyc" complementation group. However, FBrf0198649 shows that the lesion in the mutant maps within the prom transcription unit, and thus the allele is now listed as an allele of prom in FlyBase.