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General Information
Symbol
Dmel\Hsp839J1
Species
D. melanogaster
Name
FlyBase ID
FBal0049165
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Nature of the Allele
Mutations Mapped to the Genome
 
Type
Location
Additional Notes
References
point mutation
Nucleotide change:
G3195627A
Reported nucleotide change:
G1129A
Amino acid change:
E377K | Hsp83-PA; E377K | Hsp83-PB
Reported amino acid change:
E377K
Associated Sequence Data
DNA sequence
Protein sequence
 
 
Progenitor genotype
Cytology
Nature of the lesion
Statement
Reference
Point mutation. Amino acid replacement: E377K. Nucleotide substitution: G1129A.
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 )
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference
A Hsp839J1 background has a highly significant and reproducible effect on total phenotypic variation of scutellar and thoracic bristles. Twice as many Hsp839J1 mutant flies exhibit abnormal thoracic bristle numbers, with the severity of the thoracic bristle number defects increasing from deviations of at most two thoracic bristles to as many as four. The number of flies with aberrant scutellar bristle numbers increases 4 to 5-fold in Hsp839J1 mutants.
Hsp839J1 has an effect on a normally invariant bristle trait (thoracic and scutellar bristles were analysed), three thoracic bristles (anterior dorsocentral, posterior dorsocentral and humeral bristles) are affected. Hsp839J1 has no significant effect on the trait mean of a variable bristle trait (the sternopleural, orbital, ocellar and vibrissa and carina bristles were analysed) compared to the background strain in which the Hsp839J1 mutation was induced.
Hsp83P582/Hsp839J1 mutants develop until larval or early pupae. Larval brains of these mutants exhibit mitotic defects. Polyploid and other aneuploid cells make up about 30% of the mitotic figures seen. About 20% of anaphases are disorganised. The centrosome cycle is also found to be impaired in these cells. There are two classes of defect. Mitotic cells are seen containing a single microtubule organising centre (MTOC) made up of one or two unsegregated centrosomes, leading to the organisation of monopolar mitotic figures. Cells are also seen in which the centrosomes appear to fail in their assembly.
Viable in transheterozygous combination with Hsp83e1D, Hsp83e6D, Hsp83e3A, Hsp83e6A or Hsp83e4A; males are sterile and females are weakly fertile. Hsp839J1/Hsp83e3A males show some defects during spermatogenesis. The number and shape of spermatocytes within 16-cell cysts are mostly normal (5-10% are abnormal). Some motile sperm are present. Hsp839J1/Hsp83e4A males show some defects during spermatogenesis. The number and shape of spermatocytes within 16-cell cysts are mostly normal (5-10% are abnormal). The nuclei and nebenkern within spermatids are mostly normal (5-10% are abnormal). Individualised sperm are present, but are not motile. Hsp839J1/Hsp83e6A and Hsp83e1D/Hsp839J1 males show defects during spermatogenesis. The number and shape of spermatocytes within 16-cell cysts are mostly normal (5-10% are abnormal). Spermatids with variable number, size and shape of nuclei and nebenkern are seen. Needle-shaped crystals are present throughout developing spermatocytes and spermatids. Individualised sperm are present but they are not motile and are fragile. Hsp83e6D/Hsp839J1 males show defects during spermatogenesis. Excessive numbers of primary spermatocytes are seen in many developing cysts. Spermatids with variable number, size and shape of nuclei and nebenkern are seen. Needle-shaped crystals are present throughout developing spermatocytes and spermatids. Individualised sperm are present but they are not motile and are fragile.
Lethality occurs at embryonic or early larval stages.
External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Other
Statement
Reference
Phenotype Manifest In
Suppressor of
Statement
Reference
Hsp839J1 is a suppressor of eye phenotype of Raf::tor12D.sev
Additional Comments
Genetic Interactions
Statement
Reference
Presence of Hsp8313F3 completely eliminates all additional R7 cells in phl::tor12D.hs.sev mutants. Mutation interacts genetically with the sev mutations; 'sev315' and sevS11.T:Hsap\MYC.
Dominantly suppresses the rough eye phenotype of phl::tor12D.sev. Synthetic lethal in combination with phl12.
Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (7)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (9)