FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\Src64BΔ540.hs.2sev
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General Information
Symbol
Dmel\Src64BΔ540.hs.2sev
Species
D. melanogaster
Name
FlyBase ID
FBal0065001
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Transgenic product class
Nature of the Allele
Transgenic product class
Progenitor genotype
Carried in construct
Cytology
Description

Construct: Amino acid replacement: S540. Two copies of the sev enhancer linked to an Hsp70 promoter drive expression of a C-terminally truncated form of Src64B@ (contains the mutation described above) which lacks the putative negative regulatory residue Tyr547.

Allele components
Component
Use(s)
Encoded product / tool
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
Detailed Description
Statement
Reference

Expression of Src64BΔ540.hs.2sev under the control of heat shock in early embryos results in dramatic defects in cuticular structures, most notably deletion of the ventral denticle bands. The filzkorper are slightly enlarged.

Overexpression of Src64BΔ540.hs.2sev by heat shock at 37oC for 1 hour every other day during development is lethal. Over 95% of embryos carrying two copies of Src64BΔ540.hs.2sev show abnormalities when Src64BΔ540.hs.2sev is expressed using a 30 minute heat shock at 37oC between 5 and 8 hours of development. These include failure to undergo germ band retraction and grossly abnormal nervous system morphology, including asymmetries and extreme thinning of the longitudinal connectives. Expression of Src64BΔ540.hs.2sev in adults causes roughening of the eye. The regular array of the ommatidia is grossly distorted. 92% of the ommatidia contain an excess of photoreceptor cells with small rhabdomeres.

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

Src64BΔ540.hs.2sev has lethal | heat sensitive phenotype, suppressible by Ras85De2F

Src64BΔ540.hs.2sev has lethal | heat sensitive phenotype, suppressible by Df(3R)by10

Src64BΔ540.hs.2sev has visible phenotype, suppressible by sina3

Phenotype Manifest In
Suppressed by
Statement
Reference

Src64BΔ540.hs.2sev has eye phenotype, suppressible by Ras85De2F

Src64BΔ540.hs.2sev has eye phenotype, suppressible by sina3

Src64BΔ540.hs.2sev has eye phenotype, suppressible by Ras85De1B

Additional Comments
Genetic Interactions
Statement
Reference

The conditional lethal phenotype of animals expressing Src64BΔ540.hs.2sev is suppressed by Ras85De2F or Df(3R)by10. 80-90% of Ras85De2F/+ flies carrying one copy of Src64BΔ540.hs.2sev show a reduction in eye roughness relative to control flies carrying one copy of Src64BΔ540.hs.2sev in a Ras85D+ background; most of the extra R7-like cells are eliminated and much of the normal eye architecture is restored. The rough eye phenotype is also partially suppressed by Ras85De1B or sina3.

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
Src64BΔ540.hs.2sev
Name Synonyms
Secondary FlyBase IDs
    References (2)