The gene nervana 2 is referred to in FlyBase by the symbol Dmel\nrv2 (CG9261, FBgn0015777). It is a protein_coding_gene from Drosophila melanogaster. There is experimental evidence that it has the molecular function: sodium:potassium-exchanging ATPase activity; cation transmembrane transporter activity. There is experimental evidence that it is involved in the biological process: regulation of tube diameter, open tracheal system; regulation of tube size, open tracheal system; establishment of glial blood-brain barrier; open tracheal system development; regulation of tube length, open tracheal system; cation transport; septate junction assembly. 28 alleles are reported. The phenotypes of these alleles are annotated with: tracheal branch primordium; presumptive embryonic salivary gland; trichogen cell; embryonic somatic muscle; embryonic/larval dorsal trunk; septate junction; embryonic/larval tracheal system; dorsal trunk primordium; embryonic/larval transverse connective; ganglionic branch primordium. It has 6 annotated transcripts and 6 annotated polypeptides. Protein features are: Sodium/potassium-transporting ATPase subunit beta. 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 within 06-24 hour embryonic stages, during early larval stages, at stages throughout the pupal period, in adult male stages. Summary of FlyAtlas Anatomical Expression Data: Many larval and adult organs/tissues expressed at moderate or high levels. Expression at high levels in the following post-embryonic organs or tissues: adult head, adult eye, larval/adult central nervous system. Expression at moderate levels in the following post-embryonic organs or tissues: adult crop, larval/adult hindgut, adult heart, larval/adult salivary gland, larval trachea, adult spermathecae, adult male reproductive system, larval/adult carcass. Comments on Affy2 ProbeSet: ProbeSet 1625215_s_at completely aligns to an exonic region common to each of the 5 FlyBase-annotated transcript isoforms of nrv2. Gene sequence location is 2L:6789770..6798862.
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Nervana (nerve antigen) protein is an anti-HRP
reactive ~42K glycoprotein that is likely to be the major contributor to
neuronal-specific anti-HRP staining. Protein was isolated from adult heads
and monoclonal antibodies were made. Staining with the monoclonal
antibodies reveals two or three products between 38K and 42K. It is
unclear if the properties described apply to nrv1 protein, nrv2
protein, or both.
Nervana protein is detected in adult heads, thoraces and abdomens but is significantly enriched in heads on western blots. On developmental westerns, it is first observed in 6hr embryos and then throughout development. The levels of the different mobility components change through development. The 42K component is not observed until 12-24hr and is not prominent until the adult stage. Nervana protein is observed in the CNS and PNS by immunolocalization in a pattern indistinguishable from the anti-HRP pattern. Staining is also observed in the garland cells and the posterior spiracles.
nrv2 is nervous system-specific. On western blots of dissected tissues, it is detected in adult heads and thorax, presumably in nervous system components. In adult tissue sections, it is detected predominantly in the nervous system, including the optic lobe, brain, thoracic ganglia, and axonal pathways in the leg.
Summary of FlyAtlas Anatomical Expression Data: Many larval and adult organs/tissues expressed at moderate or high levels. Expression at high levels in the following post-embryonic organs or tissues: adult head, adult eye, larval/adult central nervous system. Expression at moderate levels in the following post-embryonic organs or tissues: adult crop, larval/adult hindgut, adult heart, larval/adult salivary gland, larval trachea, adult spermathecae, adult male reproductive system, larval/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
1528
Larval Midgut
27.5
Larval Hindgut
226.5
Larval Malpighian Tubules
14.8
Larval Fat Body
66.7
Larval Salivary Gland
213.7
Larval Trachea
464.85
Larval Carcass
145.1
Adult Head
991.1
Adult Eye
656.35
Adult Brain
1779.4
Adult Thoracic-Abdominal Ganglion
1860.5
Adult Crop
356.2
Adult Midgut
16.8
Adult Hindgut
122.1
Adult Malpighian Tubules
14.8
Adult Fat Body
68.1
Adult Salivary Gland
140.2
Adult Heart
264.1
Adult VirginFemale Spermatheca
122.9
Adult InseminatedFemale Spermatheca
142.9
Adult Ovary
30.4
Adult Testis
114
Adult Male Accessory Gland
170
Adult Carcass
236.1
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
(1528)
Larval Midgut
27.5
Larval Hindgut
226.5
Larval Malpighian Tubules
14.8
Larval Fat Body
66.7
Larval Salivary Gland
213.7
Larval Trachea
464.85
Larval Carcass
145.1
Adult Head
(991.1)
Adult Eye
(656.35)
Adult Brain
(1779.4)
Adult Thoracic-Abdominal Ganglion
(1860.5)
Adult Crop
356.2
Adult Midgut
16.8
Adult Hindgut
122.1
Adult Malpighian Tubules
14.8
Adult Fat Body
68.1
Adult Salivary Gland
140.2
Adult Heart
264.1
Adult VirginFemale Spermatheca
122.9
Adult InseminatedFemale Spermatheca
142.9
Adult Ovary
30.4
Adult Testis
114
Adult Male Accessory Gland
170
Adult Carcass
236.1
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
(1528)
Larval Midgut
27.5
Larval Hindgut
226.5
Larval Malpighian Tubules
14.8
Larval Fat Body
66.7
Larval Salivary Gland
213.7
Larval Trachea
464.85
Larval Carcass
145.1
Adult Head
991.1
Adult Eye
656.35
Adult Brain
(1779.4)
Adult Thoracic-Abdominal Ganglion
(1860.5)
Adult Crop
356.2
Adult Midgut
16.8
Adult Hindgut
122.1
Adult Malpighian Tubules
14.8
Adult Fat Body
68.1
Adult Salivary Gland
140.2
Adult Heart
264.1
Adult VirginFemale Spermatheca
122.9
Adult InseminatedFemale Spermatheca
142.9
Adult Ovary
30.4
Adult Testis
114
Adult Male Accessory Gland
170
Adult Carcass
236.1
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
1528
Larval Midgut
27.5
Larval Hindgut
226.5
Larval Malpighian Tubules
14.8
Larval Fat Body
66.7
Larval Salivary Gland
213.7
Larval Trachea
464.85
Larval Carcass
145.1
Adult Head
991.1
Adult Eye
656.35
Adult Brain
1779.4
Adult Thoracic-Abdominal Ganglion
1860.5
Adult Crop
356.2
Adult Midgut
16.8
Adult Hindgut
122.1
Adult Malpighian Tubules
14.8
Adult Fat Body
68.1
Adult Salivary Gland
140.2
Adult Heart
264.1
Adult VirginFemale Spermatheca
122.9
Adult InseminatedFemale Spermatheca
142.9
Adult Ovary
30.4
Adult Testis
114
Adult Male Accessory Gland
170
Adult Carcass
236.1
Expression Level Scale
Very high
log, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
1528
Larval Midgut
27.5
Larval Hindgut
226.5
Larval Malpighian Tubules
14.8
Larval Fat Body
66.7
Larval Salivary Gland
213.7
Larval Trachea
464.85
Larval Carcass
145.1
Adult Head
991.1
Adult Eye
656.35
Adult Brain
1779.4
Adult Thoracic-Abdominal Ganglion
1860.5
Adult Crop
356.2
Adult Midgut
16.8
Adult Hindgut
122.1
Adult Malpighian Tubules
14.8
Adult Fat Body
68.1
Adult Salivary Gland
140.2
Adult Heart
264.1
Adult VirginFemale Spermatheca
122.9
Adult InseminatedFemale Spermatheca
142.9
Adult Ovary
30.4
Adult Testis
114
Adult Male Accessory Gland
170
Adult Carcass
236.1
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
(1528)
Larval Midgut
27.5
Larval Hindgut
226.5
Larval Malpighian Tubules
14.8
Larval Fat Body
66.7
Larval Salivary Gland
213.7
Larval Trachea
464.85
Larval Carcass
145.1
Adult Head
(991.1)
Adult Eye
656.35
Adult Brain
(1779.4)
Adult Thoracic-Abdominal Ganglion
(1860.5)
Adult Crop
356.2
Adult Midgut
16.8
Adult Hindgut
122.1
Adult Malpighian Tubules
14.8
Adult Fat Body
68.1
Adult Salivary Gland
140.2
Adult Heart
264.1
Adult VirginFemale Spermatheca
122.9
Adult InseminatedFemale Spermatheca
142.9
Adult Ovary
30.4
Adult Testis
114
Adult Male Accessory Gland
170
Adult Carcass
236.1
Expression Level Scale
None
Low
Moderate
High
log, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
1528
Larval Midgut
27.5
Larval Hindgut
226.5
Larval Malpighian Tubules
14.8
Larval Fat Body
66.7
Larval Salivary Gland
213.7
Larval Trachea
464.85
Larval Carcass
145.1
Adult Head
991.1
Adult Eye
656.35
Adult Brain
(1779.4)
Adult Thoracic-Abdominal Ganglion
(1860.5)
Adult Crop
356.2
Adult Midgut
16.8
Adult Hindgut
122.1
Adult Malpighian Tubules
14.8
Adult Fat Body
68.1
Adult Salivary Gland
140.2
Adult Heart
264.1
Adult VirginFemale Spermatheca
122.9
Adult InseminatedFemale Spermatheca
142.9
Adult Ovary
30.4
Adult Testis
114
Adult Male Accessory Gland
170
Adult Carcass
236.1
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
1528
Larval Midgut
27.5
Larval Hindgut
226.5
Larval Malpighian Tubules
14.8
Larval Fat Body
66.7
Larval Salivary Gland
213.7
Larval Trachea
464.85
Larval Carcass
145.1
Adult Head
991.1
Adult Eye
656.35
Adult Brain
1779.4
Adult Thoracic-Abdominal Ganglion
1860.5
Adult Crop
356.2
Adult Midgut
16.8
Adult Hindgut
122.1
Adult Malpighian Tubules
14.8
Adult Fat Body
68.1
Adult Salivary Gland
140.2
Adult Heart
264.1
Adult VirginFemale Spermatheca
122.9
Adult InseminatedFemale Spermatheca
142.9
Adult Ovary
30.4
Adult Testis
114
Adult Male Accessory Gland
170
Adult Carcass
236.1
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 within 06-24 hour embryonic stages, during early larval stages, at stages throughout the pupal period, in adult male stages.
[download data (TSV)]
Please Note FlyBase no
longer curates genomic clone accessions so this list
may not be complete
cDNA Clones ( 169 )
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.
Mutation in nrv2 alters tracheal tube size in embryos without affecting other aspects of tracheal development including primary branch budding and outgrowth or branch fusion.
The product(s) of the Nervana gene(s) were recognised by their epitope(s) which reacts with anti-Horse Radish Peroxidase antibodies. These antibodies label neurons in Drosophila. The nac gene product may be required for the glycosylation of these proteins.
Roy et al., 2013, Proc. Natl. Acad. Sci. U.S.A. 110(1): 181--186
Cell-type-specific roles of Na+/K+ ATPase subunits in Drosophila auditory mechanosensation. [FBrf0220434]
Cash and Andrews, 2012, BMC Dev. Biol. 12: 4
Fine scale analysis of gene expression in Drosophila melanogaster gonads reveals Programmed cell death 4 promotes the differentiation of female germline stem cells. [FBrf0217547]
Nelson et al., 2012, Nat. Cell Biol. 14(5): 518--525
Drosophila Src regulates anisotropic apical surface growth to control epithelial tube size. [FBrf0218197]
Schmidt et al., 2012, J. Neurosci. 32(22): 7466--7476
Kinesin heavy chain function in Drosophila glial cells controls neuronal activity. [FBrf0218491]
Shirasaki et al., 2012, Neuron 75(1): 41--57
Network organization of the huntingtin proteomic interactome in Mammalian brain. [FBrf0218881]
Baycin-Hizal et al., 2011, J. Proteome Res. 10(6): 2777--2784
GlycoFly: A Database of Drosophila N-linked Glycoproteins Identified Using SPEG-MS Techniques. [FBrf0213834]
Guan et al., 2011, Learn. Mem. 18(4): 191--206
Altered gene regulation and synaptic morphology in Drosophila learning and memory mutants. [FBrf0213277]
Ling and Salvaterra, 2011, PLoS ONE 6(3): e17762
Robust RT-qPCR Data Normalization: Validation and Selection of Internal Reference Genes during Post-Experimental Data Analysis. [FBrf0213272]
Oshima and Fehon, 2011, J. Cell Sci. 124(16): 2861--2871
Analysis of protein dynamics within the septate junction reveals a highly stable core protein complex that does not include the basolateral polarity protein Discs large. [FBrf0214577]
Xie and Auld, 2011, Development 138(17): 3813--3822
Integrins are necessary for the development and maintenance of the glial layers in the Drosophila peripheral nerve. [FBrf0214589]