FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Gene: Dmel\csw
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General Information
Symbol
Dmel\csw
Species
D. melanogaster
Name
corkscrew
Annotation Symbol
CG3954
Feature Type
FlyBase ID
FBgn0000382
Gene Model Status
Stock Availability
Enzyme Name (EC)
protein-tyrosine-phosphatase (3.1.3.48)
Gene Summary
corkscrew (csw) encodes a non receptor tyrosine phosphatase acting downstream of receptor tyrosine kinases (RTKs) such as Egfr, tor and FGF RTKs. The product of csw contributes to growth regulation, cell survival and developmental patterning. [Date last reviewed: 2018-09-06] (FlyBase Gene Snapshot)
Also Known As

E(sev)1A, EG:BACN25G24.2 , l(1)2Db, l(1)csw, l(1)G0170

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
1-0.6
RefSeq locus
NC_004354 REGION:2094234..2115701
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (22 terms)
Molecular Function (4 terms)
Terms Based on Experimental Evidence (3 terms)
CV Term
Evidence
References
Terms Based on Predictions or Assertions (3 terms)
CV Term
Evidence
References
Biological Process (17 terms)
Terms Based on Experimental Evidence (16 terms)
CV Term
Evidence
References
inferred from genetic interaction with FLYBASE:bnl; FB:FBgn0014135,FLYBASE:sty; FB:FBgn0014388
inferred from direct assay
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
involved_in mitotic cell cycle
inferred from mutant phenotype
inferred from genetic interaction with FLYBASE:bnl; FB:FBgn0014135
inferred from mutant phenotype
inferred from mutant phenotype
inferred from genetic interaction with FLYBASE:sev; FB:FBgn0003366
inferred from mutant phenotype
inferred from genetic interaction with FLYBASE:Egfr; FB:FBgn0003731
inferred from direct assay
inferred from genetic interaction with FLYBASE:sev; FB:FBgn0003366
inferred from mutant phenotype
Terms Based on Predictions or Assertions (2 terms)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN000439374
involved_in mitotic cell cycle
inferred from biological aspect of ancestor with PANTHER:PTN000439374
Cellular Component (1 term)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
is_active_in cytoplasm
inferred from biological aspect of ancestor with PANTHER:PTN000439374
located_in cytoplasm
non-traceable author statement
Protein Family (UniProt)
Belongs to the protein-tyrosine phosphatase family. Non-receptor class subfamily. (P29349)
Catalytic Activity (EC/Rhea)
protein tyrosine phosphatase activity
O-phospho-L-tyrosyl-[protein] + H2O = L-tyrosyl-[protein] + phosphate (3.1.3.48)
RHEA 10684:
Summaries
Gene Snapshot
corkscrew (csw) encodes a non receptor tyrosine phosphatase acting downstream of receptor tyrosine kinases (RTKs) such as Egfr, tor and FGF RTKs. The product of csw contributes to growth regulation, cell survival and developmental patterning. [Date last reviewed: 2018-09-06]
Gene Group (FlyBase)
CYTOSOLIC PROTEIN TYROSINE PHOSPHATASES -
Cytosolic Protein Tyrosine Phosphatases are non-receptor tyrosine phosphatases. The Protein Tyrosine Phosphatases are defined by the active-site signature motif Cys-X5-Arg. (Adapted from FBrf0129980 and PMID:17057753).
Pathway (FlyBase)
TORSO SIGNALING PATHWAY CORE COMPONENTS -
The formation of Drosophila embryonic termini is controlled by the localized activation of Torso (tor) receptor tyrosine kinase. The Torso signaling pathway acts via the canonical Ras/Raf/MAP kinase cascade. (Adapted from FBrf0157176.)
SEVENLESS SIGNALING PATHWAY CORE COMPONENTS -
The specification of the R7 photoreceptor cell in each ommatidium of the developing Drosophila eye is dependent on activation of Sevenless receptor tyrosine kinase, which acts via the canonical Ras/Raf/MAP kinase cascade to promote the expression of lz and pros. sev, expressed in presumptive R7 cells, is activated by binding to Bride of Sevenless (boss), a seven-transmembrane protein expressed in R8 cells. (Adapted from FBrf0127283 and FBrf0221727).
EGFR SIGNALING PATHWAY CORE COMPONENTS -
The Epidermal Growth Factor Receptor (EGFR) signaling pathway is used multiple times during development (FBrf0190321). It is activated by the binding of a secreted ligand to the receptor tyrosine kinase Egfr and acts via the canonical Ras/Raf/MAP kinase (ERK) cascade. (Adapted from FBrf0190321 and FBrf0221727).
FGFR SIGNALING PATHWAY CORE COMPONENTS -
Fibroblast Growth Factor Receptor (FGFR) signaling pathway is initiated by the binding of secreted FGFs - bnl or ths/pyr to receptor tyrosine kinases btl or htl, respectively, to initiate signaling primarily via the canonical Ras/Raf/MAP kinase (ERK) cascade. (Adapted from FBrf0221038).
Protein Function (UniProtKB)
Required in all receptor tyrosine kinase signaling pathways. Functions downstream of the receptor tyrosine kinase torso, acting in concert with D-Raf via tailless. Also functions downstream of Egfr (epidermal growth factor receptor) and btl (fibroblast growth factor receptor). The SH2 domain suggests that csw effects its role by mediating heteromeric protein interactions. Maternally required for normal determination of cell fates at the termini of the embryo. Required for cell fate specification of the ventral ectoderm, in the developing embryonic CNS and for embryonic tracheal cell migration. Functions during imaginal development for proper formation of adult structures such as eyes, aristae, L5 wing vein and the tarsal claw. Dephosphorylates drpr isoform A which is required for the inhibition by drpr isoform A of glial cell engulfment of axonal debris produced following axonal injury (PubMed:22426252).
(UniProt, P29349)
Phenotypic Description (Red Book; Lindsley and Zimm 1992)
csw: corkscrew
Hemizygotes die at the larval-pupal transition; dissected third-instar larvae display small imaginal disks. Larval neuroblast cells show low mitotic index, but chromosome morphology appears normal. Homozygous germ-line clones produce inviable embryos with U-shaped or twisted phenotypes, which are unaffected by paternal genotype or developmental temperature. csw6 is viable and fertile with rough eyes.
Summary (Interactive Fly)

nonreceptor protein tyrosine phosphatase - SH2 domains - downregulates receptor tyrosine kinase signaling - Sprouty proteins are targets of Corkscrew/SHP-2 tyrosine phosphatases - Corkscrew/SHP-2 proteins can promote RTK signaling by inactivating a feedback inhibitor

Gene Model and Products
Number of Transcripts
4
Number of Unique Polypeptides
4

Please see the JBrowse view of Dmel\csw for information on other features

To submit a correction to a gene model please use the Contact FlyBase form

Protein Domains (via Pfam)
Isoform displayed:
Pfam protein domains
InterPro name
classification
start
end
Protein Domains (via SMART)
Isoform displayed:
SMART protein domains
InterPro name
classification
start
end
Structure
Protein 3D structure   (Predicted by AlphaFold)   (AlphaFold entry P29349)

If you don't see a structure in the viewer, refresh your browser.
Model Confidence:
  • Very high (pLDDT > 90)
  • Confident (90 > pLDDT > 70)
  • Low (70 > pLDDT > 50)
  • Very low (pLDDT < 50)

AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. Some regions with low pLDDT may be unstructured in isolation.

Experimentally Determined Structures
Crossreferences
Comments on Gene Model

Low-frequency RNA-Seq exon junction(s) not annotated.

Tissue-specific extension of 3' UTRs observed during later stages (FBrf0218523, FBrf0219848); all variants may not be annotated

Gene model reviewed during 5.46

Gene model reviewed during 5.55

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0070378
4560
841
FBtr0070379
7664
945
FBtr0070380
4106
682
FBtr0333260
7119
894
Additional Transcript Data and Comments
Reported size (kB)

7.2, 6.0, 4.7 (northern blot)

Comments
External Data
Crossreferences
Polypeptide Data
Annotated Polypeptides
Name
FlyBase ID
Predicted MW (kDa)
Length (aa)
Theoretical pI
UniProt
RefSeq ID
GenBank
FBpp0070362
92.4
841
8.46
FBpp0070363
103.8
945
9.47
FBpp0070364
74.5
682
8.66
FBpp0305458
98.3
894
8.16
Polypeptides with Identical Sequences

None of the polypeptides share 100% sequence identity.

Additional Polypeptide Data and Comments
Reported size (kDa)

841 (aa); 92.4 (kD)

Comments

One of a couple of products generated by alternative splicing.

External Data
Subunit Structure (UniProtKB)

Interacts with drpr isoform A.

(UniProt, P29349)
Linkouts
Sequences Consistent with the Gene Model
Nucleotide / Polypeptide Records
 
Mapped Features

Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\csw using the Feature Mapper tool.

External Data
Crossreferences
Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
Linkouts
Expression Data
Testis-specificity index

The testis specificity index was calculated from modENCODE tissue expression data by Vedelek et al., 2018 to indicate the degree of testis enrichment compared to other tissues. Scores range from -2.52 (underrepresented) to 5.2 (very high testis bias).

-1.13

Transcript Expression
in situ
Stage
Tissue/Position (including subcellular localization)
Reference
organism

Comment: maternally deposited

northern blot
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Evidence
References
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

JBrowse - Visual display of RNA-Seq signals

View Dmel\csw in JBrowse
RNA-Seq by Region - Search RNA-Seq expression levels by exon or genomic region
Reference
See Gelbart and Emmert, 2013 for analysis details and data files for all genes.
Developmental Proteome: Life Cycle
Developmental Proteome: Embryogenesis
External Data and Images
Linkouts
BDGP expression data - Patterns of gene expression in Drosophila embryogenesis
DRscDB - A single-cell RNA-seq resource for data mining and data comparison across species
EMBL-EBI Single Cell Expression Atlas - Single cell expression across species
FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
FlyAtlas2 - A Drosophila melanogaster expression atlas with RNA-Seq, miRNA-Seq and sex-specific data
Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
Flygut - An atlas of the Drosophila adult midgut
Images
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 33 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 45 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of csw
Transgenic constructs containing regulatory region of csw
Aberrations (Deficiencies and Duplications) ( 22 )
Variants
Variant Molecular Consequences
Alleles Representing Disease-Implicated Variants
Phenotypes
For more details about a specific phenotype click on the relevant allele symbol.
Lethality
Allele
Sterility
Allele
Other Phenotypes
Allele
Phenotype manifest in
Allele
chromosome & larval neuroblast
Orthologs
Human Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Homo sapiens (Human) (126)
12 of 14
Yes
Yes
 
7  
10 of 14
No
Yes
3  
1 of 14
No
No
0  
1 of 14
No
No
2  
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
3  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
2  
1 of 14
No
No
1  
1 of 14
No
No
1  
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
3  
1 of 14
No
No
1 of 14
No
No
2  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
2  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
8  
1 of 14
No
No
2  
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
2  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
2  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1  
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Model Organism Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Rattus norvegicus (Norway rat) (80)
12 of 14
Yes
Yes
10 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Mus musculus (laboratory mouse) (85)
11 of 14
Yes
Yes
10 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
0  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Xenopus tropicalis (Western clawed frog) (63)
10 of 13
Yes
Yes
9 of 13
No
Yes
6 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
Yes
1 of 13
No
Yes
1 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
Danio rerio (Zebrafish) (100)
13 of 14
Yes
Yes
12 of 14
No
Yes
10 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
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No
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No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
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No
1 of 14
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No
1 of 14
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No
1 of 14
No
No
1 of 14
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Yes
1 of 14
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No
1 of 14
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No
1 of 14
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1 of 14
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No
1 of 14
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No
1 of 14
No
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1 of 14
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1 of 14
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1 of 14
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1 of 14
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No
1 of 14
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No
1 of 14
No
No
1 of 14
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No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Caenorhabditis elegans (Nematode, roundworm) (69)
13 of 14
Yes
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
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No
1 of 14
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No
1 of 14
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No
1 of 14
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No
1 of 14
No
No
1 of 14
No
No
1 of 14
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No
1 of 14
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No
1 of 14
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No
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No
1 of 14
No
No
1 of 14
No
No
1 of 14
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No
1 of 14
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No
1 of 14
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No
1 of 14
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No
1 of 14
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No
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No
1 of 14
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No
1 of 14
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No
1 of 14
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No
1 of 14
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No
1 of 14
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No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Arabidopsis thaliana (thale-cress) (1)
1 of 13
Yes
No
Saccharomyces cerevisiae (Brewer's yeast) (1)
1 of 13
Yes
No
Schizosaccharomyces pombe (Fission yeast) (1)
2 of 12
Yes
Yes
Escherichia coli (enterobacterium) (0)
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:csw. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (40)
2 of 13
2 of 13
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Human Disease Associations
FlyBase Human Disease Model Reports
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 9 )
Potential Models Based on Orthology ( 4 )
Modifiers Based on Experimental Evidence ( 1 )
Allele
Disease
Interaction
References
model of  Noonan syndrome
is ameliorated by rl1
Disease Associations of Human Orthologs (via DIOPT v9.1 and OMIM)
Note that ortholog calls supported by only 1 or 2 algorithms (DIOPT score < 3) are not shown.
Functional Complementation Data
Functional complementation data is computed by FlyBase using a combination of the orthology data obtained from DIOPT and OrthoDB and the allele-level genetic interaction data curated from the literature.
Dmel gene
Ortholog showing functional complementation
Supporting References
Interactions
Summary of Physical Interactions
Interaction Browsers

Please see the Physical Interaction reports below for full details
protein-protein
Physical Interaction
Assay
References
RNA-protein
Physical Interaction
Assay
References
Summary of Genetic Interactions
Interaction Browsers

Please look at the allele data for full details of the genetic interactions
Starting gene(s)
Interaction type
Interacting gene(s)
Reference
Starting gene(s)
Interaction type
Interacting gene(s)
Reference
suppressible
External Data
Subunit Structure (UniProtKB)
Interacts with drpr isoform A.
(UniProt, P29349 )
Linkouts
BioGRID - A database of protein and genetic interactions.
DroID - A comprehensive database of gene and protein interactions.
MIST (genetic) - An integrated Molecular Interaction Database
MIST (protein-protein) - An integrated Molecular Interaction Database
Pathways
Signaling Pathways (FlyBase)
Metabolic Pathways
FlyBase
External Links
External Data
Linkouts
KEGG Pathways - A collection of manually drawn pathway maps representing knowledge of molecular interaction, reaction and relation networks.
Reactome - An open-source, open access, manually curated and peer-reviewed pathway database.
SignaLink - A signaling pathway resource with multi-layered regulatory networks.
Class of Gene
Genomic Location and Detailed Mapping Data
Chromosome (arm)
X
Recombination map
1-0.6
Cytogenetic map
Sequence location
FlyBase Computed Cytological Location
Cytogenetic map
Evidence for location
2D1-2D2
Limits computationally determined from genome sequence between P{EP}ActnEP1193&P{EP}CG4322EP1631 and P{EP}EP1460&P{EP}CG2924EP1596
Experimentally Determined Cytological Location
Cytogenetic map
Notes
References
2D1-2D2
(determined by in situ hybridisation) 2C7--D2 (determined by in situ hybridisation)
2D1-2D1
(determined by in situ hybridisation)
Experimentally Determined Recombination Data
Left of (cM)
Right of (cM)
Notes

cswEsev1A-eOP maps 1 map unit from the telomere of the X chromosome.

Stocks and Reagents
Stocks (25)
Genomic Clones (8)
 

Please Note FlyBase no longer curates genomic clone accessions so this list may not be complete

cDNA Clones (104)
 

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 JBrowse for alignment of the cDNAs and ESTs to the gene model.

cDNA clones, fully sequenced
BDGP DGC clones
Other clones
    Drosophila Genomics Resource Center cDNA clones

    For each fully sequenced cDNA the DGRC maintains various forms of the cDNA (e.g tagged or untagged) in several different host vectors for subsequent cloning and expression in Drosophila and Drosophila cell lines.

    cDNA Clones, End Sequenced (ESTs)
    RNAi and Array Information
    Linkouts
    DRSC - Results frm RNAi screens
    Antibody Information
    Laboratory Generated Antibodies
    Commercially Available Antibodies
     
    Cell Line Information
    Publicly Available Cell Lines
     
      Other Stable Cell Lines
       
        Other Comments

        One of 42 Drosophila genes identified as being most likely to reveal molecular and cellular mechanisms of nervous system development or plasticity relevant to human Mental Retardation disorders.

        Expression of a gain-of-function csw construct (P{UAS-csw.src90}) phenocopies gain-of-function mutations and constructs in positive signaling genes in the Egfr pathway.

        csw has a positive role in embryonic mesoderm development.

        Phosphorylation of residues 801 and 854 of dos is required for the recruitment of csw.

        csw SH2 domain function is essential for csw function, but either SH2 domain can fulfill this requirement. csw protein-tyrosine phosphatase activity is required for full csw function, but a catalytically inactive csw protein is capable of providing partial function. Deletion of either the csw protein-tyrosine phosphatase insert of the entire carboxyl terminus does not abolish csw function. csw and activated sev proteins are associated in vivo in a manner that does not require either csw SH2 domain function or tyrosine phosphorylation of sev protein. In contrast, the interaction between csw and dos proteins is dependent on csw SH2 domain function.

        The csw SH2-containing tyrosine phosphatase is required during signalling by sev, Ras85D and phl. Expression of a membrane targeted form of csw can drive R7 photoreceptor development in the absence of sev function.

        Abnormal eye development caused by ectopic expression of an activated form of Src64B is alleviated by dominant-negative mutations of csw or drk.

        The protein encoded by dos is a csw substrate and may also be a direct or indirect target for the tyrosine kinase activity of sev. Mutations that inactivate dos dominantly enhance the effects of reduced csw activity and suppress the effects of either excessive sev or csw activity. Results indicate that dos is a crucial component of the sev signalling pathway and strongly suggest that dephosphorylation of dos by csw promotes R7 photoreceptor differentiation.

        csw is required for terminal embryonic development, for the development of adult structures and during oogenesis for follicle cell development. csw has a role in embryonic ventral cell fate development, in embryonic CNS development and in embryonic tracheal development.

        csw is essential for photoreceptor cell development.

        Spatial and temporal transcript accumulation pattern in ovaries is determined by in situ hybridisation.

        During late embryogenesis csw is required for tracheal morphogenesis as well as determination of ventral ectodermal fates. Embryos that lack csw develop tracheal precursor cells which fail to migrate into their final positions and markers specific for ventral ectodermal cells are missing. csw is also required during imaginal and adult stages.

        On the basis of map position and failure to complement csw mutations are likely to be alleles of csw.

        Mutants of csw display a very strong, highly penetrant suppression of tor mutant embryos, embryos display 4 to 6 abdominal denticle belts.

        Sequence similarity between human src homology protein-tyrosine-phosphatase 2 (SH-PTP2) and csw and their similar patterns of expression suggest that SH-PTP2 is the human homolog of csw.

        Synonym given as "l(1)2Db" on p129 and "l(1)2Dd" on p311.

        csw and phl act in concert to regulate tll expression. csw functions downstream of tor.

        csw is required for photoreceptor development, acts in the developing R7 cell to attenuate the signalling by the sev gene product and is a suppressor of the Egfr phenotype to restore the eye to a nearly normal appearance.

        Hemizygotes die at the larval-pupal transition; dissected third instar larvae display small imaginal discs. Larval neuroblast cells show low mitotic index, but chromosome morphology appears normal. Homozygous germ-line clones produce inviable embryos with U-shaped or twisted phenotypes, which are unaffected by paternal genotype or developmental temperature.

        Relationship to Other Genes
        Source for database merge of

        Source for merge of: csw CG3954

        Source for merge of: csw l(1)G0170

        Source for merge of: EG:BACN25G24.2 CG3954

        Source for merge of: csw anon-WO03040301.207 anon-WO03040301.209 anon-WO03040301.219

        Additional comments

        Source for merge of EG:BACN25G24.2 CG3954 was sequence comparison ( date:000425 ).

        Source for merge of csw anon-WO03040301.207 anon-WO03040301.209 anon-WO03040301.219 was sequence comparison ( date:051113 ).

        Nomenclature History
        Source for database identify of
        Nomenclature comments
        Etymology
        Synonyms and Secondary IDs (23)
        Reported As
        Symbol Synonym
        anon-WO03040301.207
        anon-WO03040301.209
        anon-WO03040301.219
        csw
        (Leahy et al., 2024, Menzies et al., 2024, Rodríguez-Martín et al., 2024, Leahy et al., 2023, Zhao et al., 2023, Zhao et al., 2023, Ecovoiu et al., 2022, Perlegos et al., 2022, Bilder et al., 2021, Chou et al., 2021, Marmion et al., 2021, Ostalé et al., 2021, Salim et al., 2021, Ruzzi et al., 2020, Smits and Shvartsman, 2020, Fenckova et al., 2019, Meltzer et al., 2019, Gene Disruption Project members, 2018-, Levis, 2018.8.30, Muñoz-Soriano et al., 2018, Ashton-Beaucage and Therrien, 2017, Transgenic RNAi Project members, 2017-, Ashton-Beaucage et al., 2016, Hoi et al., 2016, Malartre, 2016, Hatzihristidis et al., 2015, Jindal et al., 2015, Lim et al., 2015, Ashwal-Fluss et al., 2014, Sopko et al., 2014, Bergwitz et al., 2013, Carter, 2013, Saunders et al., 2013, Shen et al., 2013, Sopko and Perrimon, 2013, Webber et al., 2013, Japanese National Institute of Genetics, 2012.5.21, Legent et al., 2012, Reid et al., 2012, Rodriguez et al., 2012, Weng et al., 2012, Abruzzi et al., 2011, Feng et al., 2011, Friedman et al., 2011, Muyskens and Guillemin, 2011, Ashton-Beaucage et al., 2010, Popodi et al., 2010-, Venken et al., 2010, Krejcí et al., 2009, Oishi et al., 2009, Pagani et al., 2009, Sims et al., 2009, Wagner et al., 2009, Botham et al., 2008, Christensen et al., 2008.12.28, Chen et al., 2007, Wang and Lin, 2007, Zeitlinger et al., 2007, Altenhein et al., 2006, Brandt, 2006, Comet et al., 2006, Dworkin and Gibson, 2006, Dworkin and Gibson., 2006, Jarvis et al., 2006, Oishi et al., 2006, Wang et al., 2006, Settle et al., 2003, Gim et al., 2001)
        csw/SHP-2
        l(1)GA114
        Secondary FlyBase IDs
        • FBgn0004637
        • FBgn0026663
        • FBgn0029599
        • FBgn0066824
        • FBgn0066826
        • FBgn0066827
        Datasets (1)
        Study focus (1)
        Experimental Role
        Project
        Project Type
        Title
        • bait_protein
        Interaction map generated by purification of receptor tyrosine kinase pathway factors, with identification of copurifying proteins by mass spectrometry.
        Study result (0)
        Result
        Result Type
        Title
        External Crossreferences and Linkouts ( 126 )
        Sequence Crossreferences
        NCBI Gene - Gene integrates information from a wide range of species. A record may include nomenclature, Reference Sequences (RefSeqs), maps, pathways, variations, phenotypes, and links to genome-, phenotype-, and locus-specific resources worldwide.
        RefSeq - A comprehensive, integrated, non-redundant, well-annotated set of reference sequences including genomic, transcript, and protein.
        UniProt/GCRP - The gene-centric reference proteome (GCRP) provides a 1:1 mapping between genes and UniProt accessions in which a single 'canonical' isoform represents the product(s) of each protein-coding gene.
        UniProt/Swiss-Prot - Manually annotated and reviewed records of protein sequence and functional information
        UniProt/TrEMBL - Automatically annotated and unreviewed records of protein sequence and functional information
        Other crossreferences
        AlphaFold DB - AlphaFold provides open access to protein structure predictions for the human proteome and other key proteins of interest, to accelerate scientific research.
        BDGP expression data - Patterns of gene expression in Drosophila embryogenesis
        DRscDB - A single-cell RNA-seq resource for data mining and data comparison across species
        EMBL-EBI Single Cell Expression Atlas - Single cell expression across species
        FlyAtlas2 - A Drosophila melanogaster expression atlas with RNA-Seq, miRNA-Seq and sex-specific data
        FlyMine - An integrated database for Drosophila genomics
        KEGG Genes - Molecular building blocks of life in the genomic space.
        MARRVEL_MODEL - MARRVEL (model organism gene)
        Linkouts
        BioGRID - A database of protein and genetic interactions.
        Drosophila Genomics Resource Center - Drosophila Genomics Resource Center (DGRC) cDNA clones
        DroID - A comprehensive database of gene and protein interactions.
        DRSC - Results frm RNAi screens
        Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
        FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
        FlyCyc Genes - Genes from a BioCyc PGDB for Dmel
        Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
        Flygut - An atlas of the Drosophila adult midgut
        FlyMet - A comprehensive tissue-specific metabolomics resource for Drosophila.
        iBeetle-Base - RNAi phenotypes in the red flour beetle (Tribolium castaneum)
        Interactive Fly - A cyberspace guide to Drosophila development and metazoan evolution
        KEGG Pathways - A collection of manually drawn pathway maps representing knowledge of molecular interaction, reaction and relation networks.
        MIST (genetic) - An integrated Molecular Interaction Database
        MIST (protein-protein) - An integrated Molecular Interaction Database
        Reactome - An open-source, open access, manually curated and peer-reviewed pathway database.
        SignaLink - A signaling pathway resource with multi-layered regulatory networks.
        References (279)