FB2024_03 , released June 25, 2024
Allele: Dmel\bifR47
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General Information
Symbol
Dmel\bifR47
Species
D. melanogaster
Name
FlyBase ID
FBal0064945
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Nature of the Allele
Allele class
Progenitor genotype
Cytology
Description

Deletion in bif, removing 3kb of exon 3 and a second deletion removing most of exon 6.

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

The R2-R5 axons in bifR47 mutant larvae bypass the lamina, to which they are targeted in wild-type optic lobes, and terminate in the medulla. Breaks are detectable in the lamina surface of these mutants but the optic lobe shows no gross abnormalities. bifR47 mutant adult brains show largely normal arrays of axons, although the rhabdomeres of the retina have defective morphology.

Gaps are frequently seen in the R1-R6 growth cone termination site in bifR47/Y larvae, and many axons project through the lamina into the medulla layer. The R7 projection pattern is indistinguishable from that in wild type.

Homozygous eyes have bristles that are short, missing or duplicated. Fusion of adjacent ommatidia is occasionally seen. The majority of rhabdomeres are elliptical (they are round in wild-type flies) and most ommatidia show irregular patterns in the spatial organisation of the rhabdomeres. F-actin distribution in the pupal eye disc is abnormal.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
NOT Enhanced by
Statement
Reference
NOT suppressed by
Statement
Reference
Suppressor of
Statement
Reference

bif[+]/bifR47 is a suppressor of abnormal neuroanatomy phenotype of Scer\GAL4GMR.PF, msnEP549

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

bif[+]/bifR47 is a suppressor of photoreceptor cell & axon phenotype of Scer\GAL4GMR.PF, msnEP549

Other
Statement
Reference

Pp1-87B[+]/Pp1-87Bunspecified, bifR47 has photoreceptor cell R1 & axon phenotype

Pp1-87B[+]/Pp1-87Bunspecified, bifR47 has photoreceptor cell R2 & axon phenotype

Pp1-87B[+]/Pp1-87Bunspecified, bifR47 has photoreceptor cell R3 & axon phenotype

Pp1-87B[+]/Pp1-87Bunspecified, bifR47 has photoreceptor cell R4 & axon phenotype

Pp1-87B[+]/Pp1-87Bunspecified, bifR47 has photoreceptor cell R5 & axon phenotype

Additional Comments
Genetic Interactions
Statement
Reference

bifR47/+; Pp1-87Bunspecified/+ double mutant larvae show mistargeting of axons R2-R5 into the medulla and clumping of axons in the lamina. Neither single heterozygote shows this phenotype.

bifR47/+; Ptp10D1/+ and bifR47/+; Ptp69D1/+ double mutants and show clumps and breaks in the lamina, while neither single heterozygote shows this phenotype.

bifR47/homerLL17 mutants exhibit severe defects in the anchoring of osk RNA and proteins at the posterior of the developing oocyte. The F-actin cytoskeleton in these mutants are indistinguishable from wild-type. Polarity of microtubules appears normal and the cytoskeleton-dependant cytoplasmic streaming occurs normally. Treating these oocytes with an actin depolymerisation drug does not exacerbate the phenotype. When bifR47 single mutant oocytes are treated with an actin depolymerisation drug osk anchoring is defective.

The defects in photoreceptor cell projection patterns seen in larvae overexpressing msnEP549 under the control of Scer\GAL4GMR.PF are largely suppressed by one copy of bifR47.

bifR47/Y ; Df(2L)Prl/+ flies have rough eyes.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Partially rescued by
Comments
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (9)