FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\sns4.3
Open Close
General Information
Symbol
Dmel\sns4.3
Species
D. melanogaster
Name
FlyBase ID
FBal0230425
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Nature of the Allele
Progenitor genotype
Cytology
Description

Amino acid replacement: V1003E.

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

T8832447A

Amino acid change:

V1001E | sns-PA; V1001E | sns-PB; V1001E | sns-PC

Reported amino acid change:

V1003E

Comment:

Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.

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 ( 1 )
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

Homozygous embryos show defects in myoblast fusion.

A small number of homozygotes survive to pupal development.

The garland cell nephrocytes of mutant third instar larvae have shape defects and are more loosely associated than normal.

The nephrocyte diaphragms in the garland cell nephrocytes of mutant second instar larvae are abnormal in structure when analysed by TEM.

Garland cell nephrocytes from mutant second instar larvae show reduced uptake of Alexa Fluor 555 BSA but not of dextran 10kD compared to controls after co-incubation with both tracers for 30 seconds.

Garland cell nephrocytes from mutant second instar larvae show efficient uptake of dextran 10kD after co-incubation with both Cascade Blue dextran 10kD and fluorescein dextran 500kD for 5 minutes. However, these cells show a very poor uptake of dextran 500kD under these conditions compared to controls.

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

sns4.3 has embryonic myoblast phenotype, enhanceable by dock[+]/dock04723

Additional Comments
Genetic Interactions
Statement
Reference

The number of unfused myoblasts in sns4.3 embryos is enhanced if they are either heterozygous or homozygous for dock04723.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (1)
Reported As
Symbol Synonym
Name Synonyms
Secondary FlyBase IDs
    References (2)