FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\apt167
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General Information
Symbol
Dmel\apt167
Species
D. melanogaster
Name
FlyBase ID
FBal0064958
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Allele class
Mutagen
    Nature of the Allele
    Allele class
    Mutagen
    Progenitor genotype
    Cytology
    Description

    Amino acid replacement: R110H. Missense mutation in the third exon substituting an A for G. This change occurs within a short repeat of amino acid sequence of acidic-Arg-Thr-X-Asn.

    Mutations Mapped to the Genome
    Curation Data
    Type
    Location
    Additional Notes
    References
    Nucleotide change:

    G23597279A

    Reported nucleotide change:

    G?A

    Amino acid change:

    R110H | apt-PA; R116H | apt-PB; R110H | apt-PC; R110H | apt-PD; R96H | apt-PE; R126H | apt-PF

    Reported amino acid change:

    R110H

    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

    apt167/+ mutant adults do not exhibit any obvious wing defects.

    In ~80% of homozygous aptKG05830/apt167 mutant stage 10 egg chambers, 1-7 additional invasive "stretched border cells" are seen, often dramatically stretched out and trailing behind the main cluster.

    Egg chambers containing homozygous apt167 mutant clones in stage 10 egg chambers contain 1-7 additional invasive "stretched border cells", often dramatically stretched out and trailing behind the main cluster. This phenotype is observed even if only a few anterior follicle cells are mutant, and no stretched border cells are seen in wild type cells. No phenotypes are seen when in egg chambers where the border cells are the only mutant cells.

    Females with homozygous germline clones have phenotypically wild-type ovaries but a small fraction of the eggs laid develop into embryos with head defects.

    Homozygotes die as late embryos or early larvae and show a similar phenotype to apt41 with respect to heart development and function.

    Homozygous embryos have severe defects in structures derived from the gnathal segments. The lateral bars of the H-piece and hypostomal sclerites are missing and the lateralgraten are truncated. The ectostomal sclerite and the cross bar of the H-piece are unaffected. The heads are open anteriorly and the dorsal pouch is reduced, replaced by sclerotic rubble. The dorsal bridge is missing or broken.

    External Data
    Interactions
    Show genetic interaction network for Enhancers & Suppressors
    Phenotypic Class
    Suppressed by
    Statement
    Reference
    Enhancer of
    Statement
    Reference

    apt167/apt[+] is an enhancer of abnormal size phenotype of hhbar3

    Other
    Statement
    Reference

    apt167/apt[+], hhbar3 has visible phenotype

    Phenotype Manifest In
    Suppressed by
    Enhancer of
    Statement
    Reference

    apt167/apt[+] is an enhancer of wing phenotype of hhbar3

    Other
    Additional Comments
    Genetic Interactions
    Statement
    Reference

    The presence of the apt167/+ mutation enhances the severity of the wing defects seen in hhbar3/hhbar3 mutant adults, showing further reduced wing area between L3 and L4, small wings and blistering.

    Egg chambers of Socs36E178/+, apt167/+ double heterozygous females contain additional invasive cells that are not associated with the border cell cluster: 55% of the double heterozygous egg chambers contain more than one additional invasive cell compared to 10% and 15% respectively for each single heterozygote.

    In 44% of Socs36E178 aptKG05830/Socs36EEY06665 apt167 stage 10 egg chambers the border cells are tethered to the anterior end of the egg chamber by non-cluster associated invasive cells. This inability to detach from neighbouring follicle cells results in a migration delay in 31% of the stage 10 double mutant egg chambers.

    One copy of Stat92E06346 partially suppresses the invasive border cell phenotype seen in aptKG05830/apt167 mutant stage 10 egg chambers. A reduction is seen in both the frequency of affected egg chambers and the number of cells. On average 26% of egg chambers contain "stretched border cells" compared to ~80% in aptKG05830/apt167 alone. The border cell cluster also detaches much more easily from the anterior end of the egg chamber.

    Embryos derived from a cross of wild-type males to females heterozygous for aretQB and also heterozygous for apt167 occasionally have head defects (these defects are not seen in embryos derived from females singly heterozygous for aretQB or apt167). This phenotype is largely suppressed if the females are also heterozygous for nosL7.

    Enhances the lethality of Dfd13/Dfd3 flies grown at 29oC - leaving nearly zero survivors.

    Xenogenetic Interactions
    Statement
    Reference
    Complementation and Rescue Data
    Images (0)
    Mutant
    Wild-type
    Stocks (0)
    Notes on Origin
    Discoverer
    Comments
    Comments

    One of three alleles isolated in this screen.

    External Crossreferences and Linkouts ( 0 )
    Synonyms and Secondary IDs (2)
    References (10)