FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\spz5e03444
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General Information
Symbol
Dmel\spz5e03444
Species
D. melanogaster
Name
FlyBase ID
FBal0160745
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
DNT2e03444
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Allele class
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Allele class
Progenitor genotype
Associated Insertion(s)
Cytology
Description
Allele components
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Inserted element
Mutations Mapped to the Genome
Associated Sequence Data
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Expression Data
Reporter Expression
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Modifiers Based on Experimental Evidence ( 1 )
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Disease-implicated variant(s)
 
Phenotypic Data
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Additional Comments
Genetic Interactions
Statement
Reference

NT141, spz5e03444 double homozygosity leads to near lethality, which is rescued by Scer\GAL4elav.PU-driven expression of kek1UAS.mRFP(Unk), kek3UAS.mRFP(Unk), kek5UAS.mRFP(Unk) (leading to a small but significant increase in viability), kek2UAS.mRFP(Unk) or kek6UAS.mRFP(Unk) (leading to near full viability), but not kek4UAS.mRFP(Unk).

Loss of both NT1 and spz5 in spz5e03444 NT141 double-mutant embryos results in an increase in apoptosis compared to each of the single mutants, revealing redundant or complementary functions in the control of neuronal survival.

Viability is affected in NT141 spz5e03444 double-mutants: in homozygosis, double mutant flies are viable (although some larval lethality, as well as when in trans over NT141 Df(3L)Exel6092, is observed), but NT141 spz5e03444/In(3LR)TM6B flies do not produce homozygous progeny at 18[o]C, suggesting unsuccessful larval competition.

The penetrance of ISNb/d targeting defects increases in spz5e03444 NT141 / Df(3L)Exel6092 NT141 double-mutant embryos, although not significantly.

The penetrance of both SNa and ISNb/d targeting defects increases in spz5e03444 NT141 spz2, compared to the double or single mutants. In the triple mutants, misrouting phenotypes can be very dramatic, and there are cases of loss of all ISNb/d motor axons (not seen in single mutants). Misrouting of the transverse nerve (TN) can be very dramatic in triple mutants, although milder effects in this nerve occur with comparable penetrance in all genotypes (~10%). Misroutings of ISN are negligible in single and double mutants, but they increase and can be dramatic in triple-mutant embryos (12.7%).

NT141 spz5e03444 / NT141 Df(3L)Exel6092 double mutant flies display a range of behavioral phenotypes including: inability to estimate the location of a petri dish rim, falling off a petri dish rim, sluggishness, inability to climb, and wobbling.

Xenogenetic Interactions
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Complementation and Rescue Data
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Stocks (1)
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Synonyms and Secondary IDs (4)
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    References (8)