FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\EphrinRS5
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General Information
Symbol
Dmel\EphrinRS5
Species
D. melanogaster
Name
FlyBase ID
FBal0269901
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Nature of the Allele
Progenitor genotype
Associated Insertion(s)
Cytology
Description

Local transposition of an unspecified P{RS5} element located adjacent to the Ephrin locus introduces the P{RS5} element into the 5' UTR of Ephrin, within the first exon. This allele exhibits a robust reduction of approximately 50% in Ephrin transcript levels.

Allele components
Component
Use(s)
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

Homozygotes are viable with normal external adult morphology. While these animals display normal ommatidial development, cortical axon misprojection in the medulla results in neuropil gaps and ectopic axons in the cortical cell body layer, and photoreceptor axon projection defects are observed in the lamina.

Only 12% of EphrinRS5 mutants examined exhibit multiple gaps in the medulla neuropil, while most have no gaps. 24% of mutants show moderate defects and 47% show mild defects in lobula architecture. Large HRP[+] cortical inclusions are rare.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Enhanced by
Phenotype Manifest In
Enhanced by
Additional Comments
Genetic Interactions
Statement
Reference

All optic lobe phenotypic features associated with EphrinRS5 are exacerbated by heterozygosity for Reph1 or Rephk08617A.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (2)
Reported As
Symbol Synonym
EphrinRS5
Name Synonyms
Secondary FlyBase IDs
    References (2)