FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\Khc4
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General Information
Symbol
Dmel\Khc4
Species
D. melanogaster
Name
FlyBase ID
FBal0029876
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: C1192T.

Revision of data reported in FBrf0111813.

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

C16269391T

Reported nucleotide change:

C1192T

Reported nucleotide change:

G12156896A

Amino acid change:

T291M | Khc-PA

Reported amino acid change:

T291M

Comment:

Reported base location of mutation is relative to noncoding strand.

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

Khc4/Khc27 larvae show reduced flux of neurosecretory dense core vesicles along the axons compared to wild type.

Khc4 embryos have disrupted myonuclear positioning but normal muscle elongation and attachment.

Hemizygotes show at least 50% lethality during the second larval instar stage.

Khc4/Khc5 heteroallelic flies cultured at 22oC become paralysed at 39oC. The temperature threshold for this behavior is higher than that for mlenap-ts1 or parats1, and the timecourse of recovery is slower. For many minutes the flies remain sluggish. Shows no bang sensitivity.

Larval growth abnormalities and lack of mobility.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Enhancer of
Statement
Reference

Khc4 is an enhancer of phenotype of parats1

Khc4 is an enhancer of phenotype of mlenap-ts1

Suppressor of
Statement
Reference

Khc4 is a suppressor of phenotype of Sh14

Khc4 is a suppressor of phenotype of eag1

Other
Statement
Reference
Additional Comments
Genetic Interactions
Statement
Reference

Unlike either single heterozygote, embryos doubly heterozygous for ensswo and Khc4 show defective myonuclear positioning.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Rescued by
Comments

The paralysis of Khc4/Khc5 flies at 39oC is rescued by one copy of Khc+t7.5.

Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (2)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (6)