FB2026_02 , released June 18, 2026
Allele: Dmel\Hrb27Ck16203
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General Information
Symbol
Dmel\Hrb27Ck16203
Species
D. melanogaster
Name
FlyBase ID
FBal0044462
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
hrp48k16203, l(2)k16203
Key Links
Nature of the Allele
Progenitor genotype
Associated Insertion(s)
Cytology
Description

P{lacW} insertion 2.2kb from the Hrb27C coding sequence.

Allele components
Component
Use(s)
Inserted element
Encoded product / tool
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

Hrb27Ck10413/Hrb27Ck16203 transheterozygous flies frequently have Mushroom Bodies (MB) with α and β lobes of unequal width (asymmetric), truncated α lobes or MBs lacking either the α or the β lobes, when compared to controls. They also exhibit abnormal overextension of dorsal lobes when compared to controls.

<3% of eggs laid by Hrb27C10280/Hrb27Ck16203 females exhibit any degree of dorsalisation.

Germline clones of Hrb27Ck16203 develop into egg chambers and laid eggs, although many of the eggs have a shape characteristic of dumping defects during the latest stages of oogenesis and are not fertilized. The organisation and polarity of the oocyte cytoskeleton is somewhat abberant in these germline clones. Of the eggs derived from these germ-line clones that are fertilised only 3% develop into larvae. Around half of unhatched eggs form embryos with wild-type cuticle, while 18% have fewer than 6 segments and 15% show head defects consistent with posterior patterning activity at the anterior.

Small eye phenotype is observed in the majority of homozygous females, the posterior supraalar macrochaetae is missing in most males and females.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Enhancer of
Statement
Reference

Hrb27C[+]/Hrb27Ck16203 is an enhancer of embryonic/first instar larval cuticle & embryonic head phenotype of Scer\GAL4VP16.nanos.UTR, osk3'UTR.UASp

Other
Statement
Reference

Hrb27C10280/Hrb27Ck16203, sqd1/sqdK12 has nurse cell & nuclear chromosome phenotype

Additional Comments
Genetic Interactions
Statement
Reference

Dorsalisation of the eggs laid by sqd1/sqdK12 transheterozygotes is enhanced by Hrb27C10280/Hrb27Ck16203, so that 100% show some degree of dorsalisation.

The penetrance and severity of embryonic cuticle patterning defects in osk3'UTR.Scer\UAS.P\T; Scer\GAL4nos.UTR.T:Hsim\VP16 embryos is enhanced by Hrb27Ck16203/+.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer

I. Kiss.

Comments
Comments

Allelic series: Hrb27Ck02814 > Hrb27Ck16203 > Hrb27C02647

Somatic P\T IVS3 splicing from a reporter transgene, P\TIVS3.Hsp83.T:Ecol\lacZ, is activated in Hrb27Ck16203 mutants.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (6)
Reported As
Symbol Synonym
Hrb27Ck16203
hrb27Ck16303
l(2)02647k16203
Name Synonyms
Secondary FlyBase IDs
    References (8)