FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\robo1Δ1
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General Information
Symbol
Dmel\robo1Δ1
Species
D. melanogaster
Name
FlyBase ID
FBal0319968
Feature type
allele
Associated gene
Dmel\robo1
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Allele class
Mutagen
Nature of the Allele
Allele class
Mutagen
CRISPR/Cas9
(Ito et al., 2016)
Progenitor genotype
Cytology
Description

10bp deletion that removes nucleotides +40 to +49 relative to the robo1 P1 transcription start site. The deletion lies within the fru-BM response obligatory sequence (FROS) that has been shown to be necessary and sufficient for the fru-BM protein isoform to repress robo1 transcription.

(Ito et al., 2016)
Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
deletion
2R:22,700,922..22,700,931 [-]
Comment:

10 bp deletion in the first exon of robo1-RA within the FROS sequence (Fru[BM] response oligatory sequence).

(Ito et al., 2016)
Variant Molecular Consequences
Associated Sequence Data
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
 
UniProtKB/Swiss-Prot
    UniProtKB/TrEMBL
      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

      The courtship index (percentage of time a male spends in courtship) and wing extension index (percentage of time a male spends for unilateral wing extension and vibration for courtship song) in robo1Δ1/robo1Δ3 males is similar to wild type; however, during courtship robo1Δ1/robo1Δ3 males show precocious wing switching (duration the mutant continues to use the same wing is much shorter, quantified as a significantly larger wing switching index) compared to controls. robo1Δ1/+ males have a significantly larger wing switching index than wild type.

      robo1Δ1/+ clones (in Scer\GAL4fru-NP0021 neurons) in males have a significant increase in mAL neurons without an ipsilateral neurite compared to control clones; there is no effect in females.

      (Ito et al., 2016)
      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
      Rescued by

      robo1Δ1/robo1[+] is rescued by Scer\GAL4GMR43D01/robo1GD2608

      (Ito et al., 2016)
      Comments

      Expression of robo1GD2608 driven by Scer\GAL4GMR43D01 rescues precocious wing switching during courtship in robo1Δ1/+ males.

      (Ito et al., 2016)
      Images (0)
      Mutant
      Wild-type
      Stocks (0)
      Notes on Origin
      Discoverer
      External Crossreferences and Linkouts ( 0 )
      Synonyms and Secondary IDs (1)
      Reported As
      Symbol Synonym
      robo1Δ1
      (Ito et al., 2016)
      Name Synonyms
      Secondary FlyBase IDs
        References (1)