FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\Darkk11502
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General Information
Symbol
Dmel\Darkk11502
Species
D. melanogaster
Name
FlyBase ID
FBal0104364
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
l(2)k11502, dpfK1, Arkk11502, darkP1041
Key Links
Genomic Maps

Nature of the Allele
Progenitor genotype
Associated Insertion(s)
Cytology
Description

The P{lacW} insertion is ~1.3kb upstream of the Ark translation initiation site.

P{lacW} insertion in the 5' untranslated region, 117bp upstream of the initiation codon.

P{lacW} insertion 81bp upstream of the TATA box.

Allele components
Component
Use(s)
Inserted element
Encoded product / tool
Mutations Mapped to the Genome
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

Arkk11502/Df(2R)BSC49 and Arkk11502/ArkP803-Δ15 third instar larvae show gut melanisation not accompanied by tissue overgrowth or hemocyte encapsulation.

Homozygous third instar larvae develop multiple black spots along the gut and sometimes in the salivary glands.

48% of Arkk11502 mutant flies exhibit extra macrochaetae on the scutellum. Arkk11502 mutants have one extra SOP cell in the scutellum region of the third instar wing disc. Analysis of the scutellum region of the pupal notum (24-30 h after pupal formation (APF)) shows that there is an extra neuron and thecogen present, which are derived from the extra SOP cell.

Unlike wild-type embyros UV irradition of Arkk11502 homozygous pre-gastrula embryos at 50 mJ/cm2 does not induce cell death.

Mutants show only slight cell death defects in the embryo and barely detectable defects in adults.

The outer morphology of homozygous larvae and flies appears normal, except for adult dorsal bristles; extra bristles are often seen on the scutellum. Abnormal ommatidia with one extra photoreceptor cell are often seen. The morphology of the pigment cell layer is disorganised compared to the regular pattern seen in wild-type flies. A significant decrease in apoptotic cells is seen in stage 11-12 homozygous embryos compared to wild type. The brain hemispheres of third instar larvae are larger than normal and contain a markedly decreased number of apoptotic cells.

Homozygous stage 12/1 embryos contain fewer apoptotic cells in the head region that wild-type embryos. The phenotype is highly penetrant but some variation is seen. Embryos often show defects in head involution and the brain appears larger than normal. Suppresses the eye phenotype caused by Dcp-1GMR.PS or Dcp-1N.GMR. A strong synergism in cell ablation is seen when Dcp-1GMR.PS and rprGMR.PW are coexpressed in the eye. This phenotype is not modified by Arkk11502.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Suppressor of
Statement
Reference

Darkk11502 is a suppressor of visible phenotype of rprGMR.PW

NOT Suppressor of
Statement
Reference

Darkk11502 is a non-suppressor of visible phenotype of hidGMR.PG

Phenotype Manifest In
Suppressor of
Statement
Reference

Darkk11502 is a suppressor of eye phenotype of rprGMR.PW

Darkk11502 is a suppressor of eye phenotype of Dcp-1GMR.PS

Darkk11502 is a suppressor of eye phenotype of Dcp-1N.GMR

NOT Suppressor of
Statement
Reference

Darkk11502 is a non-suppressor of eye phenotype of hidGMR.PG

Darkk11502 is a non-suppressor of eye phenotype of grimGMR.PC

Darkk11502 is a non-suppressor of eye phenotype of rprGMR.PW

Additional Comments
Genetic Interactions
Statement
Reference

The hatch rate of homozygous Arkk11502 embryos is not reduced if the embryos are injected with th dsRNA (produced by annealing thcIa and tha.cIa RNA).

The eye phenotype caused by expression of rprGMR.PW is significantly suppressed by Arkk11502. The eye phenotype caused by expression of WGMR.PG is not affected by Arkk11502.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (3)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (11)
References (17)