FB2025_01 , released February 20, 2025
Allele: Dmel\c(2)MZ0810
Open Close
General Information
Symbol
Dmel\c(2)MZ0810
Species
D. melanogaster
Name
FlyBase ID
FBal0147243
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

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

Amino acid replacement: Q457term.

FlyBase curator comment: Authors state lesion to be 'Amino acid replacement: Q436K'. However see McKim, 2005.6.16, personal communication to FlyBase for subsequent correction of this.

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

C16305020T

Reported nucleotide change:

C?T

Amino acid change:

Q457term | c(2)M-PA

Reported amino acid change:

Q457term

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

Oocytes of c(2)MEP2115/c(2)MZ0810 transheterozygous mutants display defects in synaptonemal complex assembly, while the centromere clustering and sister chromatid cohesion (assessed by number of cid foci) in pachytene oocytes is not affected.

c(2)MZ0810/c(2)MZ0810 female meioses exhibit reduced crossing over along the X chromosome.

Homozygotes exhibit a high rate on non-disjunction (19.8% X chromosome non-disjunction) and a reduced number of crossovers, with the number of crossovers per physical distance diminishing as the region approaches the centromere. Sister chromatid nondisjunction is seen in the offspring of homozygous c(2)MZ0810 mothers at a frequency of 3.1% (10.5% of all non-disjunction events) when crossed with an X chromosome balancer, 1.5% (7.6%) respectively when not crossed with a balancer.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Enhancer of
Statement
Reference
NOT Suppressor of
Statement
Reference

c(2)MZ0810 is a non-suppressor of sterile phenotype of okrWS

Other
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference

Combination with c(2)MEP2115/c(2)MZ0810 in transheterozygous state cannot suppress the decrease in average number of c(3)G-positive patches in oocytes between regions 2a and 3 of the germarium observed in flies expressing SAGL00534 under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 but it does ameliorate the reduction in patches number observed in flies expressing Nipped-BGL00574.

sunn167-109/Df(3L)ED4470;c(2)MEP2115/c(2)MZ0810 double mutant flies do not show any evidence of synaptonemal complex assembly in oocytes.

c(2)MEP2115/c(2)MZ0810,ord5/ord10 double mutants show defects in centromere clustering and sister chromatid cohesion (assessed by number of cid foci) in pachytene oocytes relative to controls.

okr782/okr782, c(2)MZ0810/c(2)MZ0810 double mutant female meioses exhibit reduced crossover frequency along most of the X chromosome, but significantly higher crossover frequency near the centromere, as compared to either single mutant.

c(3)G68; c(2)MZ0810 double mutant females exhibit crossovers at a higher than expected frequency.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Partially rescued by
Comments

A 1hr heat-shock induced pulse of expression of c(2)MScer\UAS.P\T.T:Ivir\HA1 (controlled by Scer\GAL4hs.PB) partially reduced the chromosome nondisjunction frequency in the eggs laid 7-10 days after the heat-shock (these would have been in the germarium at the time of the heat-shock), Scer\GAL4bam.T:Hsim\VP16-driven expression of c(2)MScer\UAS.P\T.T:Ivir\HA1 fails to rescue the nondisjunction phenotype, in contrast to expression driven by Scer\GAL4nos.UTR.T:Hsim\VP16 which results in full rescue.

Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
Comments
Comments

Phenotypic analysis (non-disjunction) provides an allelic series: c(2)MEP2115 > c(2)MZ0810 > c(2)MZ3780.

"Amino acid replacement: Q457@." was stated as revision.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (1)
Reported As
Symbol Synonym
Name Synonyms
Secondary FlyBase IDs
    References (4)