FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\Tsp2A1-2
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General Information
Symbol
Dmel\Tsp2A1-2
Species
D. melanogaster
Name
FlyBase ID
FBal0320401
Feature type
allele
Associated gene
Dmel\Tsp2A
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Allele class
Mutagen
Nature of the Allele
Allele class
Mutagen
CRISPR/Cas9
(Izumi et al., 2016)
Progenitor genotype
Cytology
Description

19bp deletion near the start of the open reading frame, resulting in a frameshift and premature stop codon.

(Izumi et al., 2016)
Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
deletion
X:1,347,318..1,347,336 [+]
Comment:

19 bp deletion resulting in a frameshift and early translation termination.

(Izumi et al., 2016)
Variant Molecular Consequences
Associated Sequence Data
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
 
UniProtKB/Swiss-Prot
    UniProtKB/TrEMBL
      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

      Tsp2A1-2/Tsp2A1-2 mutants hatch into first instar larvae but die at this stage. Mutant first instar larvae display defects in smooth septate junctions in the midgut, with septa-like structures occasionally visible but less electron-dense than wild type, plasma membranes of adjacent cells often more closely apposed than in wild type, and appearance of large gaps between the lateral membranes of adjacent cells.

      (Izumi et al., 2016)
      External Data
      Interactions
      Show genetic interaction network for Enhancers & Suppressors
      Phenotypic Class
      Phenotype Manifest In
      Additional Comments
      Genetic Interactions
      Statement
      Reference
      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
      Tsp2A1-2
      (Chen and St Johnston, 2022, Izumi et al., 2021, Chen et al., 2018, Izumi et al., 2016)
      Name Synonyms
      Secondary FlyBase IDs
        References (4)