FB2024_03 , released June 25, 2024
Allele: Dmel\Klp3Amei-352
Open Close
General Information
Symbol
Dmel\Klp3Amei-352
Species
D. melanogaster
Name
FlyBase ID
FBal0012149
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
mei-352
Key Links
Genomic Maps

Allele class
Nature of the Allele
Allele class
Progenitor genotype
Cytology
Description

Amino acid replacement: E321K.

Amino acid replacement: E?K.

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

G2602494A

Amino acid change:

E321K | Klp3A-PA; E321K | Klp3A-PB

Reported amino acid change:

E321K

Comment:

Nucleotide substitution thought to be responsible for mutant phenotype. Other differences thought to be polymorphic variants.

Nucleotide change:

T2601629C

Amino acid change:

I609T | Klp3A-PA; I609T | Klp3A-PB

Reported amino acid change:

I609T

Comment:

Likely to be polymorphism. Other observed change in mutant thought to be responsible for mutant phenotype.

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

The total meiotic exchange frequency for chromosome arm 2L shows little deviation from that of wild-type for homozygous and Klp3Amei-352/Df(1)ED6579 females, but the distribution of exchanges along the chromosome arm is altered. Klp3Amei-352 shows reduced female fertility both as a homozygote (3.7% of eggs hatch) and in transheterozygous combination with other Klp3A mutants (% eggs hatching given in each case); Df(1)ED6579 (2.02%), Klp3A1 (1.90%), Klp3A6 (1.46%) and Klp3A2 (10.29%). The majority of embryos derived from homozygous, Klp3Amei-352/Klp3A2, Klp3Amei-352/Klp3A1 or Klp3Amei-352/Klp3A6 females appear to arrest very early, with only one small nucleus plus a mass of polar body chromatin.

Homozygous larval brain ganglia have a reduced ability to synthesise DNA after exposure to N-acetoxy-2-acetylaminofluorene compared to wild-type.

Elevates meiotic exchange in the proximal euchromatin of the X chromosome.

Hemizygous male larvae are not sensitive to HN2 and MMS.

Mutants are weakly recombination defective. Mutants do not show sensitivity to UV light, γ rays or X rays. Homozygotes and hemizygotes do not show an increased frequency of spontaneous chromosome aberrations in neuroblast metaphases compared to wild-type larvae.

Klp3Amei-352 mutation increases mitotic chromosome instability approximately three-fold.

Klp3Amei-352 females show exchange between the normally achiasmate fourth chromosomes.

Homozygous females are more sterile than can be accounted for by the observed frequencies of aneuploid ova. <up>FlyBase curator comment: FBrf0187654 demonstrates that the semisterility of mutant females is due to maternal-effect lethality, and that both the reduced fertility and the exchange phenotype are the consequence of the same mutational lesion.</up>

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference
Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Images (0)
Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer

FBrf0023919 noted that homozygous females have a more severe defect in fertility than would be predicted given the frequency of nondisjunction seen among surviving progeny and did not determine whether the meiotic and semisterility phenotypes were due to a single mutation or to mutations in two separate loci on the X chromosome. FBrf0187654 demonstrates that the semisterility is a consequence of maternal effect lethality an that both the meiotic and semisterility phenotypes of Klp3Amei-352 mutants are due to a single lesion, in the Klp3A locus.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (10)