FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\cora5
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General Information
Symbol
Dmel\cora5
Species
D. melanogaster
Name
FlyBase ID
FBal0089377
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
cor5, coracle5
Key Links
Nature of the Allele
Progenitor genotype
Cytology
Description
Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Variant Molecular Consequences
Associated Sequence Data
DNA sequence
Protein sequence
 
Expression Data
Reporter Expression
Additional Information
Statement
Reference
 
Marker for
Reflects expression of
Reporter construct used in assay
Human Disease Associations
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 0 )
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 0 )
Disease
Interaction
References
Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
 
Disease-implicated variant(s)
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference

Homozygous cora5 mutants and corak08713/cora5 transheterozygotes show electrophysiologically detectable loss of glutamate receptors.

The septate junctions of cora5 mutant stage 15 embryos are disrupted.

The tracheal systems of lates stage cora5 homozygous embryos have overgrown tubes with unusual expansions, defects in the accumulation of lumen antigens and lumen breaks.

cora5/cora15 mutant wings exhibit a wing hair chevron phenotype and matches of non-parallel alignment.

In cora5 homozygous mutants the adherens junction remains intact, with the regular spacing of plasma membranes maintained. However, the septae normally located between these membranes are reduced in number or absent. cora5/cora5 somatic clones generated in larvae (approx. 72 hours after egg laying) do not survive in adult tissues.

In cora5/cora4 embryos, tracheal phenotypes are apparent from stage 15. At stage 16 in these embryos the average dorsal trunk length is significantly greater than wild type (P<0.005) (122+/-2% mean+/-s.e.m., n>5, normalized to stage 16 wild-type value). In addition these embryos have moderately severe diameter increases in the dorsal trunk and other primary tracheal branches, and some ganglionic branches exhibit missing lumen. Diameter increases are also seen in the primary tracheal branches of cora5 homozygous embryos. Unlike wild-type, post stage 15 trachea in cora5 homozygotes are unable to exclude from their lumens, a fluorescently labelled 10kDa dextran injected into the body cavity. This is consistent with these trachea lacking a functioning septate junction barrier.

Homozygous embryos have a dorsal open phenotype, cuticular thinning, necrosis of the salivary glands and a tracheal inflation defect. Embryos lack the individual septae that normally characterise the pleated septate junction. The salivary gland epithelium shows permeability to rhodamine-dextran, in contrast to wild type.

Homozygous embryos have a faint cuticle and a dorsal hole. The remains of the salivary glands are present as necrotic material. The epicuticle fails to adhere to the procuticle. The pleated septae that normally characterise the pleated septate junction are absent in mutant epithelia, and the transepithelial barrier function of the septate junction is also disrupted. The adherens junction appears unaffected in mutant embryos. No adult escapers are produced. Hemizygous embryos have a dorsal hole and detached cuticle. The denticle belts contain fewer denticles than normal, although the overall pattern of the denticle belts is normal.

Homozygous embryos have dorsal closure defects; dorsal holes are seen in the cuticle. Necrosis is seen in the salivary glands.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Suppressor of
Statement
Reference

cora5 is a suppressor of visible | dominant phenotype of EgfrE1

Phenotype Manifest In
NOT Enhanced by
Statement
Reference
NOT suppressed by
Statement
Reference
NOT Enhancer of
Statement
Reference
Suppressor of
Statement
Reference

cora5 is a suppressor of eye phenotype of EgfrE1

NOT Suppressor of
Statement
Reference
Additional Comments
Genetic Interactions
Statement
Reference

nrv2nwu3; cora5 double mutant embryos have the same phenotype as either single mutant.

Dominantly suppresses the rough eye phenotype of EgfrE1/+ heterozygotes; the eye is smaller than wild type with some roughening.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Images (0)
Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (4)
References (21)