FB2024_03 , released June 25, 2024
Allele: Dmel\ckKT9
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General Information
Symbol
Dmel\ckKT9
Species
D. melanogaster
Name
FlyBase ID
FBal0267128
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

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

Nucleotide substitution: C?T.

Amino acid replacement: Q445term.

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

C15050960T

Reported nucleotide change:

C?T

Amino acid change:

Q445term | ck-PA; Q445term | ck-PB; Q445term | ck-PC; Q445term | ck-PD

Reported amino acid change:

Q445term

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
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Modifiers Based on Experimental Evidence ( 0 )
Disease
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Disease-implicated variant(s)
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference

Hemizygous embryos do not have any obvious denticle morphology defects in the denticle belts. The fine hairs on the dorsal surface of the cuticle are dramatically truncated and frequently misorientated.

Apical actin aggregations in the ventral epidermal cells do not mature into the normal final denticle shape in homozygous embryos, remaining rounded even at and after 14 hours after egg laying.

External Data
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Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference

ckKT9 modifies the wgl-17 denticle phenotype, such that the double mutants have denticles with a rounded appearance and no distinctive hook.

In wgl-17 ckKT9 ; pan2 triple mutants, smaller anterior denticles can have sharp points, while larger posterior denticles remain rounded and some appear fragmented.

wgl-17 ckKT9 SoxNNC14 triple mutant embryos show a dramatic reduction in denticle size and many of the denticles are fragmented into one or two short projections. Actin bundles in the epidermal cells are split into two or sometimes three separate aggregates.

wgl-12 ckKT9 double mutant embryos shifted to the restrictive temperature at 9.5 hours after egg laying (AEL) have similar cuticle patterning defects as wgl-12 single mutant embryos shifted at the same time, but in addition, many denticles remain rounded in appearance in the double mutants, particularly the large posterior denticles. The row 5 denticles are not properly elongated or hooked in double mutant embryos shifted to the restrictive temperature at 10 hours AEL.

m1 ; ckKT9 double mutants show a reduction in both size and sharpness of the denticles compared to either single mutant.

f1 ; ckKT9 double mutants show a slight reduction in both size and sharpness of the denticles compared to either single mutant.

m1 f1 ckKT9 triple mutants show almost no elongation of the denticles.

Expression of mEP406 under the control of Scer\GAL4e22c in a ckKT9 background results in a strong reduction in denticle size.

Expression of ovosvb.Scer\UAS under the control of Scer\GAL4e22c in a ckKT9 background causes a strong reduction in denticle size and results in a change in denticle morphology, while the ectopic denticles found between the denticle belts in animals expressing ovosvb.Scer\UAS under the control of Scer\GAL4e22c in a wild-type background are virtually eliminated.

Xenogenetic Interactions
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Reference
Complementation and Rescue Data
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Mutant
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External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (1)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (2)