FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\orb2ΔBGFP
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General Information
Symbol
Dmel\orb2ΔBGFP
Species
D. melanogaster
Name
FlyBase ID
FBal0280509
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Nature of the Allele
Allele class
Progenitor genotype
Associated Insertion(s)
Cytology
Description

A modified orb2 genomic fragment has been inserted into the attP site present in orb2attP via phiC31-mediated recombination. The resulting allele contains an insertion of a single nucleotide in the A isoform specific exon, and a deletion of a nucleotide from an exon common to orb2 isoforms A and B. These mutations restore the isoform A reading frame (which is tagged at the C-terminal end with GFP) whilst disrupting that of orb2B. A single mFRT11 site is present downstream of the orb2 coding sequence, and single attL and attR sites (generated during the recombination process) are also present.

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

orb2ΔA.T:Avic\GFP/orb2ΔB.T:Avic\GFP male flies have a long term 24 hour memory comparable to wild type when exposed to a courtship conditioning paradigm. Males that experience futile courtship of mated and therefore unreceptive females suppress their courtship towards other mated females.

orb2ΔQΔA.T:Avic\GFP/orb2ΔB.T:Avic\GFP male flies show defects in long term 24 hour memory when exposed to a courtship conditioning paradigm, and these are similar in severity to orb2ΔB.T:Avic\GFP/orb2ΔA.T:Avic\GFP males. Unlike wild type flies, males that experience futile courtship of mated and therefore unreceptive females often fail to suppress their courtship towards other mated females.

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

orb2::Mmus\Cpeb2RBD.T:Avic\GFP/orb2ΔB.T:Avic\GFP male flies have almost no long term 24 hour memory when exposed to a courtship conditioning paradigm. Unlike wild type flies, males that experience futile courtship of mated and therefore unreceptive females fail to suppress their courtship towards other mated females. Short term 1 hour memory is comparable to wild type.

Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
Reported As
Symbol Synonym
orb2ΔB.T:Avic\GFP
Name Synonyms
Secondary FlyBase IDs
    References (1)