FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\kniunspecified
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General Information
Symbol
Dmel\kniunspecified
Species
D. melanogaster
Name
FlyBase ID
FBal0039450
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
unspecified
Key Links
Allele class
Mutagen
    Nature of the Allele
    Allele class
    Mutagen
    Progenitor genotype
    Cytology
    Description

    FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.

    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

    embryonic/first instar larval cuticle & abdominal segment 1

    embryonic/first instar larval cuticle & abdominal segment 2

    embryonic/first instar larval cuticle & abdominal segment 3

    embryonic/first instar larval cuticle & abdominal segment 4

    embryonic/first instar larval cuticle & abdominal segment 5

    embryonic/first instar larval cuticle & abdominal segment 6

    embryonic/first instar larval cuticle & abdominal segment 7

    Detailed Description
    Statement
    Reference

    Embryos exhibit gap defects.

    Cell death is dramatically increased in the mutant embryo, most cells in the kni expression domain die. Although no extra mesoderm cells are induced to become hemocytes the macrophages become larger than average. Cellular debris becomes located extracellularly in the hemolymph.

    Segments A1 to A7 are fused into a single denticle belt in kniunspecified mutant embryos.

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

    kniunspecified has lethal phenotype, suppressible by Res1

    Phenotype Manifest In
    Suppressed by
    Statement
    Reference

    kniunspecified has phenotype, suppressible by nebTE2

    kniunspecified has phenotype, suppressible by nebTE8

    kniunspecified has phenotype, suppressible by nebk02406

    kniunspecified has phenotype, suppressible by nebk05702

    kniunspecified has phenotype, suppressible by God60D1

    kniunspecified has phenotype, suppressible by neb01300

    kniunspecified has phenotype, suppressible by neb03552

    kniunspecified has phenotype, suppressible by neb05217

    kniunspecified has phenotype, suppressible by nebMot

    kniunspecified has phenotype, suppressible by nebTE12

    kniunspecified has phenotype, suppressible by nebTE20

    kniunspecified has phenotype, suppressible by EgfrE3/Egfr[+]

    Enhancer of
    Statement
    Reference
    Suppressor of
    Statement
    Reference
    Other
    Additional Comments
    Genetic Interactions
    Statement
    Reference

    The terminal regions of kniunspecified tllunspecified double mutants develop a single large denticle band. Triple mutant kniunspecified gtunspecified tllunspecified embryos develop a lawn of denticles which extends from the terminal into the abdominal region of the embryo.

    kniunspecified/kniunspecified Egfrt1/Egfrf11 double homozygotes show a simple additive phenotype. EgfrE3/+ shows a negative interaction in combination with kniunspecified/kniunspecified.

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

    5 mutants are isolated.

    External Crossreferences and Linkouts ( 0 )
    Synonyms and Secondary IDs (2)
    Reported As
    Symbol Synonym
    Name Synonyms
    Secondary FlyBase IDs
    • FBal0056265
    References (12)