FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\PolHExc2.15
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General Information
Symbol
Dmel\PolHExc2.15
Species
D. melanogaster
Name
FlyBase ID
FBal0296082
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Allele class
Nature of the Allele
Allele class
Cytology
Description

Imprecise excision of the P{EPgy2}DNApol-ηEY07711 progenitor insertion, resulting in a 1309bp deletion which removes part of the 5'UTR and exons encoding residues 1-436 of DNApol-η.

Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Comment:

Inferred boundaries of 1309 bp deletion resulting from the imprecise excsion of P{EPgy2}PolHEY07711. The deletion is reported to remove part of the 5' UTR and residues 1-436 of PolH.

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 ( 1 )
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 1 )
Disease
Interaction
References
is ameliorated by lokp6
Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
 
Disease-implicated variant(s)
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference

Homozygous DNApol-ηExc2.15 and DNApol-ηExc2.15/Df(3L)BSC284 females are viable and fertile, producing embryos with normal hatching rates.

Embryos derived from homozygous DNApol-ηExc2.15 or DNApol-ηExc2.15/Df(3L)BSC284 females are significantly more sensitive to exposure to UV irradiation compared to controls. The mutant embryos show a significant increase in mitotic index upon exposure to UV irradiation (this increase is not seen in wild-type controls).

Approximately 20% of embryos derived from homozygous DNApol-ηExc2.15 or DNApol-ηExc2.15/Df(3L)BSC284 females have a majority of abnormal (nopo mutant-like) mitotic spindles during syncytial embryogenesis. The frequency of syncytial embryos with a majority of abnormal spindles increases to approximately 90% after exposure to irradiation in the mutant embryos (compared to only 24% in UV-irradiated wild-type controls).

Homozygous larvae are sensitive to treatment with hydroxyurea.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Suppressed by
Statement
Reference
Additional Comments
Genetic Interactions
Statement
Reference

The mild abnormal spindle phenotype seen in syncytial embryos derived from homozygous DNApol-ηExc2.15 females in the absence of UV irradiation is suppressed if the females are also homozygous for lokp6. In addition, the spindle abnormalities seen after irradiation in embryos derived from homozygous DNApol-ηExc2.15 females are also suppressed in embryos derived from double mutant females.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments

Expression of DNApol-ηScer\UAS.P\T.T:Ivir\HA1 under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 suppresses the increased sensitivity to UV irradiation and abnormal spindle phenotype seen in embryos derived from homozygous DNApol-ηExc2.15 or DNApol-ηExc2.15/Df(3L)BSC284 females.

Images (0)
Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
Reported As
Symbol Synonym
DNApol-ηExc2.15
PolHExc2.15
dPolηExc2.15
Name Synonyms
Secondary FlyBase IDs
    References (1)