FB2025_01 , released February 20, 2025
Allele: Dmel\ZnT63CRNAi.UAS.cWa
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General Information
Symbol
Dmel\ZnT63CRNAi.UAS.cWa
Species
D. melanogaster
Name
FlyBase ID
FBal0241248
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

UASt regulatory sequences drive expression of an inverted repeat corresponding to positions 619-1026 (GenBank accession no. NM_168017) in the coding region of ZnT63C. The 408 bp DNA fragment extends from exon 3 to the splice acceptor of intron 5 and it is common in all splice variants of ZnT63C.

Allele components
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Encoded product / tool
Mutations Mapped to the Genome
Curation Data
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Location
Additional Notes
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Variant Molecular Consequences
Associated Sequence Data
DNA sequence
Protein sequence
 
Expression Data
Reporter Expression
Additional Information
Statement
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Marker for
Reflects expression of
Reporter construct used in assay
Human Disease Associations
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Models Based on Experimental Evidence ( 0 )
Disease
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Modifiers Based on Experimental Evidence ( 0 )
Disease
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Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
 
Disease-implicated variant(s)
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference

No obvious eye phenotypes are seen when ZnT63CdsRNA.Scer\UAS.cWa is expressed under the control of Scer\GAL4elav.PU.

On normal food, ubiquitous expression of ZnT63CdsRNA.Scer\UAS.cWa by Scer\GAL4da.G32 does not cause any abnormalities in viability, morphology, or fertility.

When grown on food supplemented with the zinc chelator ethylenediamine-tetraacetic acid (EDTA), larvae expressing Scer\GAL4da.G32-driven ZnT63CdsRNA.Scer\UAS.cWa exhibit extremely retarded development. After 6-7 days of feeding and growth on EDTA-supplemented medium, control larvae reach wandering stage. In contrast, ZnT63CdsRNA.Scer\UAS.cWa expressing larvae are much smaller in size, and their anatomical characteristics of mouth hooks and apical spiracles are similar to those of the second instar larvae. These larvae continue to grow and can survive as long as 20-25 days. However, they fail to pupate and ultimately die at the third-instar stage. The phenotype is chelator dosage sensitive, i.e., lower concentrations of EDTA allow escapers to survive until pupal stage and even some to viable adulthood. The ZnT63CdsRNA.Scer\UAS.cWa expressing larvae are also sensitive to another membrane-permeable zinc chelator, TPEN, but not to the copper-specific chelator bathocuproine-disulfonate or the iron specific chelator bathophenanthroline-disulfonate.

Ubiquitous expression of ZnT63CdsRNA.Scer\UAS.cWa by Scer\GAL4Act5C.PI engenders impaired development of larvae to adults under dietary zinc limitation. Adding zinc back into the EDTA-containing medium restores the survival of the ZnT63CdsRNA.Scer\UAS.cWa expressing larvae to nearly normal level. None of the other tested metals, including iron, copper, and manganese has any ameliorating effect, indicating that the lethality is due specifically to zinc deficiency.

On normal food, the zinc content of larvae expressing Scer\GAL4da.G32-driven ZnT63CdsRNA.Scer\UAS.cWa does not differ significantly from wild-type controls. In the presence of EDTA in the medium, ZnT63CdsRNA.Scer\UAS.cWa expressing larvae accumulate a lower total body zinc content. Iron content does not significantly differ in wild-type and ZnT63CdsRNA.Scer\UAS.cWa expressing larvae under either normal or EDTA-supplemented conditions.

Expression of ZnT63CdsRNA.Scer\UAS.cWa driven by either Scer\GAL4NP3084 or Scer\GAL4NP5021 in the gut mimics the effects of ubiquitous inhibition of ZnT63C by RNAi as measured by survival rates.

Flies expressing ZnT63CdsRNA.Scer\UAS.cWa driven by one of the drivers Scer\GAL4elav.PLu, Scer\GAL4how-24B, Scer\GAL4CG10962-NP1093, Scer\GAL4NP403 or Scer\GAL4ninaD.PW appear phenotypically normal.

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

Expression of ZnT63CdsRNA.Scer\UAS.cWa enhances the rough eye phenotype seen in flies expressing Hsap\MAPTR406W.Scer\UAS under the control of Scer\GAL4elav.PU. Lifespan is also further shortened. The level of vacuolisation in the CNS is exacerbated.

Co-expression of Hsap\SLC30A1Scer\UAS.cWa with ZnT63CdsRNA.Scer\UAS.cWa driven by either Scer\GAL4da.G32 or Scer\GAL4NP3084 restores the eclosion rates of larvae reared on EDTA supplemented food.

Co-expression of Hsap\SLC30A7Scer\UAS.cWa with ZnT63CdsRNA.Scer\UAS.cWa driven by either Scer\GAL4da.G32 or Scer\GAL4NP3084 does not alleviate the lethality of ZnT63C silencing by RNAi on EDTA supplemented food.

Co-expression of Hsap\SLC30A4Scer\UAS.cWa with ZnT63CdsRNA.Scer\UAS.cWa driven by Scer\GAL4unspecified does not alleviate the lethality of ZnT63C silencing by RNAi on EDTA supplemented food.

Co-expression of Hsap\SLC30A1Scer\UAS.T:Avic\GFP-EGFP with ZnT63CdsRNA.Scer\UAS.cWa driven by Scer\GAL4unspecified restores the eclosion rates of larvae reared on EDTA supplemented food.

Complementation and Rescue Data
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Mutant
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Stocks (0)
Notes on Origin
Discoverer
Comments
Comments

Expression of ZnT63CdsRNA.Scer\UAS.cWa produces dsRNA which results in dsRNA interference (RNAi) of the ZnT63C gene.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
Reported As
Symbol Synonym
ZnT63CRNAi.UAS.cWa
ZnT63CdsRNA.Scer\UAS.cWa
ZnT63CdsRNA.UAS.cWa
Name Synonyms
Secondary FlyBase IDs
    References (4)