FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\Dscam16.5.9
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General Information
Symbol
Dmel\Dscam16.5.9
Species
D. melanogaster
Name
FlyBase ID
FBal0215826
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Nature of the Allele
Allele class
Associated Insertion(s)
Cytology
Description

Recombination between the single FRT sites that are present on each of Dscam1ED69 and Dscam15'HR-6.5.9 has resulted a single copy of Dscam1 in which the genomic region encoding exons 3 to 16 has been replaced with cDNA sequences. This copy of Dscam1 encodes a single ectodomain isoform, containing the variable exons 4.6, 6.5 and 9.9. A single FRT site is present following the cDNA sequences.

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

Dscam3.31.8/Dscam6.5.9 and Dscam10.27.25/Dscam6.5.9 animals die in early larval development.

Over 75% of Dscam6.5.9/Dscam23 animals survive to late pupal stages.

Dscam3.31.8/Dscam6.5.9and Dscam10.27.25/Dscam6.5.9 embryos show defects in the organisation of the central nervous system, showing severely disrupted longitudinal tracts and aberrant midline crossing.

Dscam6.5.9/Dscam23 embryos show defects in the organisation of the central nervous system, showing disrupted longitudinal tracts.

Dscam6.5.9/Dscam- animals have a highly disorganised antennal lobe with no distinct glomerular structure and olfactory receptor neurons form many ectopic termini throughout the antennal lobe.

Almost all Dscam6.5.9/Dscam- mushroom bodies completely lack one lobe (typically the dorsal lobe is missing). Dscam3.31.8/+ animals also show defects in the mushroom body in approximately 90% of cases; either one mushroom body lobe is absent (approximately 60% of cases) or one mushroom body lobe is thinner than the other (approximately 30% of cases).

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference
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
Dscam16.5.9
Name Synonyms
Secondary FlyBase IDs
    References (1)