FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\sti5
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General Information
Symbol
Dmel\sti5
Species
D. melanogaster
Name
FlyBase ID
FBal0191271
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Nature of the Allele
Progenitor genotype
Associated Insertion(s)
Cytology
Description

sti5 encodes a prematurely truncated protein with a hobo insertion in the coiled coil domain resulting in a protein lacking the C1 and Citron Homology domains and the last portion of the coiled-coil region.

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

sti5/Df(3L)F10 mutant third instar larval brains do not exhibit a mitotic index higher than in wild-type. However, they exhibit a much higher level of polyploid neuroblasts. Approximately 41% of sti5/Df(3L)F10 cells are 4N, 13.4% 8N, and 2.2% over 8N. Approximately 2.2% of sti5/Df(3L)F10 cells exhibit a hypercondensed phenotype. sti5/sti1 mutant third instar larval brains do not exhibit a mitotic index higher than in wild-type. However, they exhibit a much higher level of polyploid neuroblasts. Approximately 41.9% of sti5/sti1 cells are 4N, 19.3% 8N, and 3.2% over 8N. sti5/sti1 third instar neuroblasts do not exhibit a hypercondensed phenotype. sti5/sti4 mutant third instar larval brains do not exhibit a mitotic index higher than in wild-type. However, they exhibit a much higher level of polyploid neuroblasts. Approximately 50.5% of sti5/sti4 cells are 4N, 12.9% 8N, and 1.0% over 8N. sti5/sti4 third instar neuroblasts do not exhibit a hypercondensed phenotype.

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
Comments
Comments

FlyBase curator comment: May correspond to l(3)S050115bS050115b.

Based on lethal phase analysis the following sti alleles can be ranked from the most severe to the weakest as follows: sti3 > sti1 = sti2 = sti4 > sti5.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (4)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (2)