The gene roughest is referred to in FlyBase by the symbol Dmel\rst (CG4125, FBgn0003285). It is a protein_coding_gene from Drosophila melanogaster. There is experimental evidence that it has the molecular function: PDZ domain binding. There is experimental evidence that it is involved in the biological process: homophilic cell adhesion; compound eye development; lateral inhibition; regulation of striated muscle tissue development; compound eye morphogenesis. 33 alleles are reported. The phenotypes of these alleles are annotated with: organ system subdivision; external compound sense organ; adult segment; organ system; imaginal precursor; peripheral nervous system; non-connected developing system; larval head segment; cell junction; appendage segment. It has one annotated transcript and one annotated polypeptide. Protein features are: CD80-like, immunoglobulin C2-set; Immunoglobulin I-set; Immunoglobulin subtype; Immunoglobulin subtype 2; Immunoglobulin-like domain; Immunoglobulin-like fold. Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of moderately high expression to a trough of very low expression. Peak expression observed within 00-18 hour embryonic stages, at stages throughout the pupal period. Summary of FlyAtlas Anatomical Expression Data: Expression at moderate levels in the following post-embryonic organs or tissues: adult eye, larval central nervous system, larval trachea. Comments on Affy2 ProbeSet: ProbeSet 1625366_at completely aligns to an exonic region of the only FlyBase-annotated transcript isoform of rst. Gene sequence location is X:2846241..2867867.
User Contributed Data
External Summaries
Phenotypic Description from the Red Book (Lindsley
& Zimm 1992)
Gene/Allele symbols may differ
from current usage
irreC: irregular chiasm-C (J.C. Hall)
In optic ganglia, fiber tracts from the medulla to
the lobula plate penetrate lobula neuropile instead of projecting through second optic chiasm; occasionally, ectopic
bundles of axonal fibers penetrate lobula-plate neuropile; in
most severely deformed individuals, lobula and lobula plate
are partly fused. In first optic chiasm, fibers from lamina
are misrouted, taking detour around posterior medulla neuropile, penetrating the latter at variable positions on its
inner (posterior) face from which positions the fiber tracts
turn around and form normal-appearing terminals in retinotopic
locations. Gynandromorph analysis showed that eye genotype
does not induce optic lobe phenotypes. It also appears as if
first- (or second-) chiasm defect does not induce that in the
second (or first); among several mutant individuals analyzed
(cf. variable expressivity under alleles), there is no correlation between the anatomical abnormalities in these two
locations (though there is high correlation between defective
first or second chiasm in left and right sides of head).
Optic lobe pioneer axons [larval neurons, which persist into
adulthood and can be seen following path of first optic
chiasm, and may guide newly growing fibers during formation of
imaginal visual system (Tix, Minden, and Technau, 1989,
Development 105: 739-46)] are displaced in irreC pupae, with
their axons having followed ectopic pathways.
rst: roughest
Eyes rough and bulging; facets irregular in size and
arrangement.
UB883
Eye mutant. Inner optic chiasma in disorder. Bundles of fibers connecting medulla and lobula plate penetrate
neuropil of lobula.
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FB2013_03
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rst transcript is expressed from embryonic stage 4-14. Embryonic stage 4 expression is initially in a pattern of seven stripes, which soon fades. Subsequently, rst is expressed in dorsally in the procephalic region and in the amnioserosa anlage. At stage 8, rst is expressed in mesectodermal cells in a segmental pattern. At stage 9, rst is expressed at the dorsal midline and in mesodermal cells. Dorsal midline expression intensifies during stage 10-11, as expression begins in visceral muscle progenitors. At stage 12, rst has strong expression in most mesodermal cells as dorsal midline expression fades. At stages 13-14, expression is in muscle founder cells, and in fusion-competent myoblasts.
rst transcripts are expressed throughout development with peaks in embryonic and pupal stages. In late stage 11 embryos, transcripts are detected in lateral mesodermal cell clusters, in the midline, in cell clusters in the mandibular, maxillary, and labial buds, and in the clypeolabrum. In late third instar larvae, strong signal is observed in the imaginal discs and in the outer optic anlagen. In the eye disc, expression starts just in front of the morphogenetic furrow. In pupae, expression is observed in the lamina and in subpopulations of medullar cells. At 36hr, retinal expression is restricted to cells between the ommatidiial clusters (ie. to presumptive secondary and tertiary pigment cells and to cells of the bristle complex). Expression is then down-regulated in the retina and transcripts can no longer be detected 72hr after puparium formation.
Summary of FlyAtlas Anatomical Expression Data: Expression at moderate levels in the following post-embryonic organs or tissues: adult eye, larval central nervous system, larval trachea.
[download data (TSV)]
Guide to FlyAtlas expression level colors
No expression (0 - 9.999)
Low expression (10 - 99.999)
Moderate expression (100 - 499.999)
High level expression (500 - 999.999)
Very high expression (>999.999)
Linear, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
269.45
Larval Midgut
1.8
Larval Hindgut
8.2
Larval Malpighian Tubules
6.7
Larval Fat Body
7.4
Larval Salivary Gland
5.2
Larval Trachea
194.525
Larval Carcass
93.4
Adult Head
50.7
Adult Eye
167.1
Adult Brain
82.5
Adult Thoracic-Abdominal Ganglion
90.4
Adult Crop
10.6
Adult Midgut
2.1
Adult Hindgut
32.5
Adult Malpighian Tubules
15.3
Adult Fat Body
26.8
Adult Salivary Gland
17.3
Adult Heart
21.6
Adult VirginFemale Spermatheca
32.3
Adult InseminatedFemale Spermatheca
48.2
Adult Ovary
64.8
Adult Testis
4.2
Adult Male Accessory Gland
9.2
Adult Carcass
21.3
Expression Level Scale
None
Low
Moderate
Linear, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
269.45
Larval Midgut
1.8
Larval Hindgut
8.2
Larval Malpighian Tubules
6.7
Larval Fat Body
7.4
Larval Salivary Gland
5.2
Larval Trachea
194.525
Larval Carcass
93.4
Adult Head
50.7
Adult Eye
167.1
Adult Brain
82.5
Adult Thoracic-Abdominal Ganglion
90.4
Adult Crop
10.6
Adult Midgut
2.1
Adult Hindgut
32.5
Adult Malpighian Tubules
15.3
Adult Fat Body
26.8
Adult Salivary Gland
17.3
Adult Heart
21.6
Adult VirginFemale Spermatheca
32.3
Adult InseminatedFemale Spermatheca
48.2
Adult Ovary
64.8
Adult Testis
4.2
Adult Male Accessory Gland
9.2
Adult Carcass
21.3
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
269.45
Larval Midgut
1.8
Larval Hindgut
8.2
Larval Malpighian Tubules
6.7
Larval Fat Body
7.4
Larval Salivary Gland
5.2
Larval Trachea
194.525
Larval Carcass
93.4
Adult Head
50.7
Adult Eye
167.1
Adult Brain
82.5
Adult Thoracic-Abdominal Ganglion
90.4
Adult Crop
10.6
Adult Midgut
2.1
Adult Hindgut
32.5
Adult Malpighian Tubules
15.3
Adult Fat Body
26.8
Adult Salivary Gland
17.3
Adult Heart
21.6
Adult VirginFemale Spermatheca
32.3
Adult InseminatedFemale Spermatheca
48.2
Adult Ovary
64.8
Adult Testis
4.2
Adult Male Accessory Gland
9.2
Adult Carcass
21.3
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
269.45
Larval Midgut
1.8
Larval Hindgut
8.2
Larval Malpighian Tubules
6.7
Larval Fat Body
7.4
Larval Salivary Gland
5.2
Larval Trachea
194.525
Larval Carcass
93.4
Adult Head
50.7
Adult Eye
167.1
Adult Brain
82.5
Adult Thoracic-Abdominal Ganglion
90.4
Adult Crop
10.6
Adult Midgut
2.1
Adult Hindgut
32.5
Adult Malpighian Tubules
15.3
Adult Fat Body
26.8
Adult Salivary Gland
17.3
Adult Heart
21.6
Adult VirginFemale Spermatheca
32.3
Adult InseminatedFemale Spermatheca
48.2
Adult Ovary
64.8
Adult Testis
4.2
Adult Male Accessory Gland
9.2
Adult Carcass
21.3
Expression Level Scale
Very high
log, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
269.45
Larval Midgut
1.8
Larval Hindgut
8.2
Larval Malpighian Tubules
6.7
Larval Fat Body
7.4
Larval Salivary Gland
5.2
Larval Trachea
194.525
Larval Carcass
93.4
Adult Head
50.7
Adult Eye
167.1
Adult Brain
82.5
Adult Thoracic-Abdominal Ganglion
90.4
Adult Crop
10.6
Adult Midgut
2.1
Adult Hindgut
32.5
Adult Malpighian Tubules
15.3
Adult Fat Body
26.8
Adult Salivary Gland
17.3
Adult Heart
21.6
Adult VirginFemale Spermatheca
32.3
Adult InseminatedFemale Spermatheca
48.2
Adult Ovary
64.8
Adult Testis
4.2
Adult Male Accessory Gland
9.2
Adult Carcass
21.3
Expression Level Scale
None
Low
Moderate
log, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
269.45
Larval Midgut
1.8
Larval Hindgut
8.2
Larval Malpighian Tubules
6.7
Larval Fat Body
7.4
Larval Salivary Gland
5.2
Larval Trachea
194.525
Larval Carcass
93.4
Adult Head
50.7
Adult Eye
167.1
Adult Brain
82.5
Adult Thoracic-Abdominal Ganglion
90.4
Adult Crop
10.6
Adult Midgut
2.1
Adult Hindgut
32.5
Adult Malpighian Tubules
15.3
Adult Fat Body
26.8
Adult Salivary Gland
17.3
Adult Heart
21.6
Adult VirginFemale Spermatheca
32.3
Adult InseminatedFemale Spermatheca
48.2
Adult Ovary
64.8
Adult Testis
4.2
Adult Male Accessory Gland
9.2
Adult Carcass
21.3
Expression Level Scale
None
Low
Moderate
High
log, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
269.45
Larval Midgut
1.8
Larval Hindgut
8.2
Larval Malpighian Tubules
6.7
Larval Fat Body
7.4
Larval Salivary Gland
5.2
Larval Trachea
194.525
Larval Carcass
93.4
Adult Head
50.7
Adult Eye
167.1
Adult Brain
82.5
Adult Thoracic-Abdominal Ganglion
90.4
Adult Crop
10.6
Adult Midgut
2.1
Adult Hindgut
32.5
Adult Malpighian Tubules
15.3
Adult Fat Body
26.8
Adult Salivary Gland
17.3
Adult Heart
21.6
Adult VirginFemale Spermatheca
32.3
Adult InseminatedFemale Spermatheca
48.2
Adult Ovary
64.8
Adult Testis
4.2
Adult Male Accessory Gland
9.2
Adult Carcass
21.3
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
269.45
Larval Midgut
1.8
Larval Hindgut
8.2
Larval Malpighian Tubules
6.7
Larval Fat Body
7.4
Larval Salivary Gland
5.2
Larval Trachea
194.525
Larval Carcass
93.4
Adult Head
50.7
Adult Eye
167.1
Adult Brain
82.5
Adult Thoracic-Abdominal Ganglion
90.4
Adult Crop
10.6
Adult Midgut
2.1
Adult Hindgut
32.5
Adult Malpighian Tubules
15.3
Adult Fat Body
26.8
Adult Salivary Gland
17.3
Adult Heart
21.6
Adult VirginFemale Spermatheca
32.3
Adult InseminatedFemale Spermatheca
48.2
Adult Ovary
64.8
Adult Testis
4.2
Adult Male Accessory Gland
9.2
Adult Carcass
21.3
Expression Level Scale
None
Low
Moderate
High
Very high
Heatmap
Tissue
Expression Level
Larval Central Nervous System
Larval Midgut
Larval Hindgut
Larval Malpighian Tubules
Larval Fat Body
Larval Salivary Gland
Larval Trachea
Larval Carcass
Adult Head
Adult Eye
Adult Brain
Adult Thoracic-Abdominal Ganglion
Adult Crop
Adult Midgut
Adult Hindgut
Adult Malpighian Tubules
Adult Fat Body
Adult Salivary Gland
Adult Heart
Adult VirginFemale Spermatheca
Adult InseminatedFemale Spermatheca
Adult Ovary
Adult Testis
Adult Male Accessory Gland
Adult Carcass
FlyAtlas Organ/Tissue Expression, larval vs. adult
Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of moderately high expression to a trough of very low expression. Peak expression observed within 00-18 hour embryonic stages, at stages throughout the pupal period.
[download data (TSV)]
Please Note FlyBase no
longer curates genomic clone accessions so this list
may not be complete
cDNA Clones ( 101 )
Please Note
This section lists
cDNAs and ESTs that fall within the genomic extent
of the gene model, which may include cDNAs and ESTs
of genes within introns, or of overlapping genes.
Please see GBrowse for alignment of the cDNAs and ESTs
to the gene model.
Eyes rough and bulging; facets irregular in size and arrangement. In optic ganglia, fiber tracts from the medulla to the lobula plate penetrate lobula neuropil instead of projecting through second optic chiasm; occasionally, ectopic bundles of axonal fibers penetrate lobula-plate neuropil; in most severely deformed individuals, lobula and lobula plate are partly fused. In first optic chiasm, fibers from lamina are misrouted, taking detour around posterior medulla neuropil, penetrating the latter at variable positions on its inner (posterior) face from which positions the fiber tracts turn around and form normal-appearing terminals in retinotopic locations. Gynandromorph analysis showed that eye genotype does not induce optic lobe phenotypes. It also appears as if first- (or second-) chiasm defect does not induce that in the second (or first); among several mutant individuals analyzed, there is no correlation between the anatomical abnormalities in these two locations (though there is high correlation between defective first or second chiasm in left and right sides of head). Optic lobe pioneer axons <up>larval neurons, which persist into adulthood and can be seen following path of first optic chiasm and may guide newly growing fibers during formation of imaginal visual system</up> are displaced in rst pupae, with their axons having followed ectopic pathways.
rst is required for normal elimination of surplus cells from the retinal epithelium. Cell death eliminates 2 or 3 cells per ommatidium 35 and 50 hours after pupation.
Dock mediates Scar- and WASp-dependent actin polymerization through interaction with cell adhesion molecules in founder cells and fusion-competent myoblasts. [FBrf0221091]
Gildor et al., 2012, Development 139(21): 4040--4050
Functional Study of Mammalian Neph Proteins in Drosophila melanogaster. [FBrf0218912]
Junion et al., 2012, Cell 148(3): 473--486
A transcription factor collective defines cardiac cell fate and reflects lineage history. [FBrf0217404]
Manning et al., 2012, Cell Rep. 2(4): 1002--1013
A Resource for Manipulating Gene Expression and Analyzing cis-Regulatory Modules in the Drosophila CNS. [FBrf0219785]
Susic-Jung et al., 2012, Dev. Biol. 370(1): 86--97
Multinucleated smooth muscles and mononucleated as well as multinucleated striated muscles develop during establishment of the male reproductive organs of Drosophila melanogaster. [FBrf0219326]
Haralalka et al., 2011, Development 138(8): 1551--1562
Asymmetric Mbc, active Rac1 and F-actin foci in the fusion-competent myoblasts during myoblast fusion in Drosophila. [FBrf0213340]
Höhne et al., 2011, Mol. Cell. Biol. 31(16): 3241--3251
The BAR Domain Protein PICK1 Regulates Cell Recognition and Morphogenesis by Interacting with Neph Proteins. [FBrf0214537]
Johnson et al., 2011, Mol. Biol. Cell 22(23): 4513--4526
Role for a Cindr-Arf6 axis in patterning emerging epithelia. [FBrf0216708]
Machado et al., 2011, PLoS ONE 6(8): e22536
rst Transcriptional Activity Influences kirre mRNA Concentration in the Drosophila Pupal Retina during the Final Steps of Ommatidial Patterning. [FBrf0214740]
Takemura and Adachi-Yamada, 2011, Dev. Biol. 357(2): 336--346
Cell death and selective adhesion reorganize the dorsoventral boundary for zigzag patterning of Drosophila wing margin hairs. [FBrf0214791]