The gene fringe is referred to in FlyBase by the symbol Dmel\fng (CG10580, FBgn0011591). It is a protein_coding_gene from Drosophila melanogaster. There is experimental evidence that it has the molecular function: UDP-glycosyltransferase activity; O-fucosylpeptide 3-beta-N-acetylglucosaminyltransferase activity; acetylglucosaminyltransferase activity. There is experimental evidence for 13 unique biological process terms, many of which group under: single-organism developmental process; post-embryonic organ morphogenesis; biological regulation; sensory organ development; system development; regionalization; appendage development; macromolecule modification; hexose metabolic process; regulation of cellular process; dorsal/ventral pattern formation, imaginal disc; primary metabolic process. 68 alleles are reported. The phenotypes of these alleles are annotated with: organ system subdivision; adult segment; organ system; thoracic segment; late extended germ band embryo; ectoderm derivative; external compound sense organ; non-connected developing system; extended germ band embryo; portion of tissue. It has one annotated transcript and one annotated polypeptide. Protein features are: Fringe; Fringe-like. Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of high expression to a trough of very low expression. Peak expression observed during late pupal stages. Summary of FlyAtlas Anatomical Expression Data: Expression at high levels in the following post-embryonic organs or tissues: adult thoracico-abdominal ganglion, larval trachea. Expression at moderate levels in the following post-embryonic organs or tissues: adult head, adult eye, larval/adult central nervous system, adult crop, larval hindgut, adult carcass. Comments on Affy2 ProbeSet: ProbeSet 1623200_at completely aligns to an exonic region of the only FlyBase-annotated transcript isoform of fng. Gene sequence location is 3L:20918991..20942612.
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FB2013_03
FB2013_02
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fng is first detected in the wing disc in second instar larvae where it is restricted to the dorsal region of the disc. Expression remains in the dorsal part of the wing disc through the first half of the third instar after which some weak expression begins to appear in ventral regions outside of the wing pouch. In addition, fng expression is lost in some regions that will give rise to the notum. By the end of third instar, expression is lost in some dorsal regions within the wing pouch and becomes strong in proximal regions of the ventral wing.
fng transcript is expressed in follicle cells starting in germarium region 2b. Expression is detected in anterior and posterior follicle cells in stage S2-S4, in all follicle cells in stage S5, in anterior and posterior polar follicle cells in stage S6-S9. At stage S10, expression is detected in all follicle cells except anterior-dorsal follicle cells.
fng transcript is expressed 4-5 polar follicle cell precursor cells in stage 1-4 egg chambers, and later in the 2 polar cells that emerge from the prepolar group.
Summary of FlyAtlas Anatomical Expression Data: Expression at high levels in the following post-embryonic organs or tissues: adult thoracico-abdominal ganglion, larval trachea. Expression at moderate levels in the following post-embryonic organs or tissues: adult head, adult eye, larval/adult central nervous system, adult crop, larval hindgut, adult carcass.
[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
197.675
Larval Midgut
79.8
Larval Hindgut
166.6
Larval Malpighian Tubules
40.3
Larval Fat Body
91.1
Larval Salivary Gland
8.6
Larval Trachea
505.45
Larval Carcass
81.775
Adult Head
314
Adult Eye
327.525
Adult Brain
449.6
Adult Thoracic-Abdominal Ganglion
729.2
Adult Crop
103.3
Adult Midgut
51.5
Adult Hindgut
36
Adult Malpighian Tubules
31.1
Adult Fat Body
20.1
Adult Salivary Gland
22.3
Adult Heart
40.925
Adult VirginFemale Spermatheca
40.7
Adult InseminatedFemale Spermatheca
45.5
Adult Ovary
52.4
Adult Testis
27
Adult Male Accessory Gland
11.6
Adult Carcass
106.9
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
197.675
Larval Midgut
79.8
Larval Hindgut
166.6
Larval Malpighian Tubules
40.3
Larval Fat Body
91.1
Larval Salivary Gland
8.6
Larval Trachea
505.45
Larval Carcass
81.775
Adult Head
314
Adult Eye
327.525
Adult Brain
449.6
Adult Thoracic-Abdominal Ganglion
(729.2)
Adult Crop
103.3
Adult Midgut
51.5
Adult Hindgut
36
Adult Malpighian Tubules
31.1
Adult Fat Body
20.1
Adult Salivary Gland
22.3
Adult Heart
40.925
Adult VirginFemale Spermatheca
40.7
Adult InseminatedFemale Spermatheca
45.5
Adult Ovary
52.4
Adult Testis
27
Adult Male Accessory Gland
11.6
Adult Carcass
106.9
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
197.675
Larval Midgut
79.8
Larval Hindgut
166.6
Larval Malpighian Tubules
40.3
Larval Fat Body
91.1
Larval Salivary Gland
8.6
Larval Trachea
505.45
Larval Carcass
81.775
Adult Head
314
Adult Eye
327.525
Adult Brain
449.6
Adult Thoracic-Abdominal Ganglion
729.2
Adult Crop
103.3
Adult Midgut
51.5
Adult Hindgut
36
Adult Malpighian Tubules
31.1
Adult Fat Body
20.1
Adult Salivary Gland
22.3
Adult Heart
40.925
Adult VirginFemale Spermatheca
40.7
Adult InseminatedFemale Spermatheca
45.5
Adult Ovary
52.4
Adult Testis
27
Adult Male Accessory Gland
11.6
Adult Carcass
106.9
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
197.675
Larval Midgut
79.8
Larval Hindgut
166.6
Larval Malpighian Tubules
40.3
Larval Fat Body
91.1
Larval Salivary Gland
8.6
Larval Trachea
505.45
Larval Carcass
81.775
Adult Head
314
Adult Eye
327.525
Adult Brain
449.6
Adult Thoracic-Abdominal Ganglion
729.2
Adult Crop
103.3
Adult Midgut
51.5
Adult Hindgut
36
Adult Malpighian Tubules
31.1
Adult Fat Body
20.1
Adult Salivary Gland
22.3
Adult Heart
40.925
Adult VirginFemale Spermatheca
40.7
Adult InseminatedFemale Spermatheca
45.5
Adult Ovary
52.4
Adult Testis
27
Adult Male Accessory Gland
11.6
Adult Carcass
106.9
Expression Level Scale
Very high
log, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
197.675
Larval Midgut
79.8
Larval Hindgut
166.6
Larval Malpighian Tubules
40.3
Larval Fat Body
91.1
Larval Salivary Gland
8.6
Larval Trachea
505.45
Larval Carcass
81.775
Adult Head
314
Adult Eye
327.525
Adult Brain
449.6
Adult Thoracic-Abdominal Ganglion
729.2
Adult Crop
103.3
Adult Midgut
51.5
Adult Hindgut
36
Adult Malpighian Tubules
31.1
Adult Fat Body
20.1
Adult Salivary Gland
22.3
Adult Heart
40.925
Adult VirginFemale Spermatheca
40.7
Adult InseminatedFemale Spermatheca
45.5
Adult Ovary
52.4
Adult Testis
27
Adult Male Accessory Gland
11.6
Adult Carcass
106.9
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
197.675
Larval Midgut
79.8
Larval Hindgut
166.6
Larval Malpighian Tubules
40.3
Larval Fat Body
91.1
Larval Salivary Gland
8.6
Larval Trachea
505.45
Larval Carcass
81.775
Adult Head
314
Adult Eye
327.525
Adult Brain
449.6
Adult Thoracic-Abdominal Ganglion
729.2
Adult Crop
103.3
Adult Midgut
51.5
Adult Hindgut
36
Adult Malpighian Tubules
31.1
Adult Fat Body
20.1
Adult Salivary Gland
22.3
Adult Heart
40.925
Adult VirginFemale Spermatheca
40.7
Adult InseminatedFemale Spermatheca
45.5
Adult Ovary
52.4
Adult Testis
27
Adult Male Accessory Gland
11.6
Adult Carcass
106.9
Expression Level Scale
None
Low
Moderate
High
log, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
197.675
Larval Midgut
79.8
Larval Hindgut
166.6
Larval Malpighian Tubules
40.3
Larval Fat Body
91.1
Larval Salivary Gland
8.6
Larval Trachea
505.45
Larval Carcass
81.775
Adult Head
314
Adult Eye
327.525
Adult Brain
449.6
Adult Thoracic-Abdominal Ganglion
729.2
Adult Crop
103.3
Adult Midgut
51.5
Adult Hindgut
36
Adult Malpighian Tubules
31.1
Adult Fat Body
20.1
Adult Salivary Gland
22.3
Adult Heart
40.925
Adult VirginFemale Spermatheca
40.7
Adult InseminatedFemale Spermatheca
45.5
Adult Ovary
52.4
Adult Testis
27
Adult Male Accessory Gland
11.6
Adult Carcass
106.9
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
197.675
Larval Midgut
79.8
Larval Hindgut
166.6
Larval Malpighian Tubules
40.3
Larval Fat Body
91.1
Larval Salivary Gland
8.6
Larval Trachea
505.45
Larval Carcass
81.775
Adult Head
314
Adult Eye
327.525
Adult Brain
449.6
Adult Thoracic-Abdominal Ganglion
729.2
Adult Crop
103.3
Adult Midgut
51.5
Adult Hindgut
36
Adult Malpighian Tubules
31.1
Adult Fat Body
20.1
Adult Salivary Gland
22.3
Adult Heart
40.925
Adult VirginFemale Spermatheca
40.7
Adult InseminatedFemale Spermatheca
45.5
Adult Ovary
52.4
Adult Testis
27
Adult Male Accessory Gland
11.6
Adult Carcass
106.9
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 high expression to a trough of very low expression. Peak expression observed during late pupal stages.
[download data (TSV)]
Please Note FlyBase no
longer curates genomic clone accessions so this list
may not be complete
cDNA Clones ( 57 )
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.
Glycosylation of the N protein domain 'EGF12' is necessary for fng to inhibit the activation of N signalling by Ser but is not necessary for Ser binding to N.
fng plays a key role in positioning N activation during early oogenesis. fng is required cell-autonomously in the somatic polar cells for follicle formation and also for polar cell fate. fng is required non-autonomously to define the number and organization of stalk cells.
Local activation of N is necessary and sufficient to promote the formation of joints between segments of the leg. This segmentation process requires the participation of Ser, Dl and fng.
fng plays a key role in dorsal-ventral compartmentalization in the wing disc, primarily by positioning a stripe of N activation, but fng may also exert additional influences on compartmentalization.
The boundary of fng expression in the developing eye, with the subsequent implications for N signalling, is crucial for the induction of dorso-ventral mirror symmetry and eye morphogenesis.
The regulated expression pattern of fng is essential for eye growth and formation of the equator. Boundaries of fng expression determine where N will be activated.
ap mediates cell interactions across the DV axis of the wing by regulating the expression of Ser and fng. In ap mutants the wing is lost, this phenotype can be rescued by ectopic expression of either Ser or fng and the resulting wings have both dorsal and ventral cell fates.
Ser does not signal in the dorsal regions of the developing imaginal wing disc due to the action of the fng gene product. Ectopic expression studies reveal the regulation of Ser by fng occurs at the level of protein and not Ser transcription.
Ser and Dl maintain each other's expression in the wing by a positive feedback loop. fng functions to position and restrict this feedback loop to the developing dorsal-ventral boundary.
fng and Ser are distinct components of a single ap-regulated cell recognition and signal induction mechanism. Clonal analysis demonstrates that fng serves as a boundary-determining molecule such that Ser is induced wherever cells expressing fng and cells not expressing fng are juxtaposed.
Yamamoto-Hino et al., 2012, Cell Struct. Funct. 37(1): 55--63
Cisterna-specific Localization of Glycosylation-related Proteins to the Golgi Apparatus. [FBrf0217862]
Cherbas et al., 2011, Genome Res. 21(2): 301--314
The transcriptional diversity of 25 Drosophila cell lines. [FBrf0213077]
Kondylis et al., 2011, PLoS ONE 6(2): e17173
Identification of ER Proteins Involved in the Functional Organisation of the Early Secretory Pathway in Drosophila Cells by a Targeted RNAi Screen. [FBrf0213167]
Morozova et al., 2011, Genetics 187(4): 1193--1205
Transcriptional networks for alcohol sensitivity in Drosophila melanogaster. [FBrf0214377]
Perdigoto et al., 2011, Development 138(21): 4585--4595
Distinct levels of Notch activity for commitment and terminal differentiation of stem cells in the adult fly intestine. [FBrf0216374]
Slattery et al., 2011, PLoS ONE 6(4): e14686
Genome-wide tissue-specific occupancy of the hox protein ultrabithorax and hox cofactor homothorax in Drosophila. [FBrf0213426]
Zhou et al., 2011, Proc. Natl. Acad. Sci. U.S.A. 108(6): 2349--2354
Experimental selection of hypoxia-tolerant Drosophila melanogaster. [FBrf0213011]