FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\Klp64Dk5
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General Information
Symbol
Dmel\Klp64Dk5
Species
D. melanogaster
Name
FlyBase ID
FBal0102963
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

Amino acid replacement: E551K.

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

G5357604A

Reported nucleotide change:

G?A

Amino acid change:

E551K | Klp64D-PA

Reported amino acid change:

E551K

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 average peak electroantennogram response is reduced in homozygous, Klp64Dk5/Klp64Dl4 and Klp64Dk5/Klp64Dk1 adults compared to controls (in response to ethyl acetate, n-butanol, benzaldehyde or propionic acid).

The electron-dense basal bodies and the connecting cilium are often present in the sensilla basiconica of the antenna in mutant adults, but the outer segments of the basiconic cilia are less branched than in wild type.

The electron-dense basal bodies and the connecting cilium are often present in the sensilla basiconica of the antenna in Klp64Dk5/Klp64Dl4 adults, but the outer segments of the basiconic cilia usually contain a slender extension with several singlet microtubules.

The outer segments of the basiconic cilia of the sensilla basiconica of the antenna are less branched than normal in Klp64Dk5/Klp64Dk1 adults.

Klp64Dk5 homozygotes, Klp64Dk1/Klp64Dk5, and Klp64Dl4/Klp64Dk5 animals have a reduced auditory response, producing a severely reduced sound evoked potentials from the Johnston's organ neurons. The Johnston organ scolopidia contains complete sets of cilia. The basal body structures, ciliary roots and desmosomal junctions between inner dendritic segments appear normal. However, the ciliary dilations are deformed and disorganised and are often located in the same plane as the dendritic caps.

Homozygotes die at or before the early third larval instar stage in a typical crowded culture. If the homozygotes are raised in low density conditions without competition from wild-type larvae, a few mutant animals survive to be pharate pupae and occasionally eclose as fully formed adults. The adults show an acutely uncoordinated walk, are unable to stand and die in a few hours. Mutant third instar larvae show slight to severe sluggishness and roll abnormally from side to side during crawling.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Enhanced by
Statement
Reference
Suppressor of
Statement
Reference
Other
Phenotype Manifest In
Enhanced by
Statement
Reference

Klp64Dk5/Klp64Dl4 has scolopidial cilium & Johnston's organ phenotype, enhanceable by Kap3V6

Suppressor of
Statement
Reference

Klp64Dk5 is a suppressor of axon phenotype of Aplip1EK4

Additional Comments
Genetic Interactions
Statement
Reference

In Aplip1EK4, Klp64Dk5 double mutants the posterior paralysis and axonal swelling of Aplip1EK4 single mutants are suppressed.

The addition of Kap3V6/+ significantly enhances the recessive lethality of Klp64Dl4/Klp64Dk5 animals. The addition of Kap3V6/Y causes complete lethality. The addition of Kap3V6/+ to Klp64Dl4/Klp64Dk5 also completely abolishes the sound evoked potentials usually obtained from the Johnston's organ neurons, and enhances the ciliary defects seen in these animals.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Fails to complement
Comments

Expression of Klp64DScer\UAS.cRa under the control of Scer\GAL4da.G32 rescues the reduced electroantennogram response of Klp64Dk5/Klp64Dk1 adults in response to ethyl acetate, n-butanol, benzaldehyde or propionic acid.

Klp64DScer\UAS.cRa rescues the lethality and uncoordinated behaviour of Klp64Dk5, either in homozygous condition or in transheterozygous combination with Klp64Dn123, in the absence of a Scer\GAL4 driver.

Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (1)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (7)