FB2024_03 , released June 25, 2024
Allele: Dmel\aurA87Ac-5
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General Information
Symbol
Dmel\aurA87Ac-5
Species
D. melanogaster
Name
FlyBase ID
FBal0000806
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Nature of the Allele
Progenitor genotype
Cytology
Description

Double mutant. Amino acid replacement: D47A. Amino acid replacement: E212K. E212 is normally absolutely conserved.

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

G11964021A

Amino acid change:

E202K | aurA-PA

Reported amino acid change:

E212K

Comment:

An additional 10aa in the reported aurA CDS (FBrf0080055) relative to the reference CDS accounts for the difference in the reported and reference amino acid locations of the change in the mutant. Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.

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

aster & neuroblast & larva (with Df(3R)T-61)

centriole & neuroblast & larva | ectopic (with Df(3R)T-61)

centrosome & neuroblast & larva

centrosome & neuroblast & larva (with Df(3R)T-61)

microtubule & neuroblast & larva (with Df(3R)T-61)

mitotic metaphase & larval brain

mitotic metaphase & larval brain (with Df(3R)P-79)

mitotic metaphase & larval brain (with Df(3R)T-47)

mitotic metaphase & larval brain (with Df(3R)T-61)

Detailed Description
Statement
Reference

Centrosome number is abnormal in mutant larval neuroblasts, with one to three centrosomes being seen.

The larval brains of aur87Ac-5 homozygotes, as well as those of aur87Ac-5/Df(3R)T-47, aur87Ac-5/Df(3R)T-61 and aur87Ac-5/Df(3R)P-79 animals, have a significantly elevated mitotic index with the majority of cells delayed in a metaphase-like state. A substantial proportion of metaphase chromosomes seen in these cells are arranged in circular arrays (indicating monopolar spindles). A small proportion of cells in these brains are aneuploid or polyploid. Note, the hemizygotes have less cells with circular arrays than homozygotes, suggesting that aur87Ac-5 might be neomorphic. In dividing aur87Ac-5/Df(3R)T-61 larval brain neuroblasts, astral microtubules are short and reduced in number throughout mitosis compared to wild-type. Many of the spindles in these cells are bipolar but mono-astral, with the remaining diminutive aster nucleated around a fragmented centrosome, frequently only present at one pole. Poles of bipolar spindles in such mutant brains either showed focused microtubules with no evidence of an organized centrosome, or spindle microtubules nucleated from bodies containing multiple centrioles.

aur87Ac-5/aur87Ac-3 larval brain neuroblasts show very few normal metaphase and anaphase figures, and many circular mitotic figures. Larval brain neuroblasts from aur87Ac-4/aur87Ac-5 show multiple mitotic figures with only one centrosome in the circular mitotic figures. The single centrosome is larger than those of bipolar spindles, consistent with them being an aggregate of duplicated centrosomes.

External Data
Interactions
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Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference
Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Partially complements
Comments
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (8)
Reported As
Symbol Synonym
aurA87Ac-5
l(3)87Ac5
Name Synonyms
Secondary FlyBase IDs
    References (5)