FB2024_03 , released June 25, 2024
Allele: Dmel\Cdk1A171T
Open Close
General Information
Symbol
Dmel\Cdk1A171T
Species
D. melanogaster
Name
FlyBase ID
FBal0045439
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
Cdk1ts, Dmcdc2A171T
Key Links
Transgenic product class
Nature of the Allele
Transgenic product class
Progenitor genotype
Carried in construct
Cytology
Description

Mutation within the conserved region of a 5.8kb HindIII Cdk1 genomic fragment (amino acid replacement A171T), mutation corresponds to a known temperature sensitive allele of S. pombe cdc2.

Allele components
Component
Use(s)
Regulatory region(s)
Encoded product / tool
Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
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

Nuclear pore complexes and annulate lamellae pore complexes (ALPCs) do not disassemble at 30oC in cdc2A171T embryos, but the pore complexes disassemble and reassemble normally in cdc2A171T embryos at 22oC. The quantity of ALPCs in cdc2A171T embryos at 30oC is substantially higher than in wild-type embryos at 30oC or in cdc2A171T embryos at 22oC.

cdc2A171T wing discs are typically smaller in size than wild-type and have fewer cells that are bigger than normal. The observed aberrant centriole pairs found in cdc2A171T mutant wing discs are attributable to excess growth of the daughter cell compared to wild-type (63% increase compared to wild-type). One of the observed aberrant centriole morphologies of cdc2A171T mutants consists of centriole pairs in which the daughter centriole is longer than the mother. About 12.5% of centrioles in cdc2A171T wing discs are triplets containing three centrioles in one of two different configurations, neither of which is observed in wild-type. In cdc2A171T mutants, movement of the daughter centriole away from the mother is not necessary to initiate assembly of a new second-generation daughter (grand-daughter).

Duplication of muscle DA1 can be seen in embryos carrying four copies of cdc2A171T (in a cdc2B47 background) which have been shifted to the non-permissive temperature. RP2 neuron duplication and large RP2 neurons are seen in 42.7% and 4.6% of cases respectively. Temperature upshifts can also result in the arrest of neuroblasts in G2 in these embryos.

Females carrying two copies of cdc2A171T in a cdc2B47 background show a rapid depletion of follicle cells when transferred to the restrictive temperature after eclosion. Mitotic proliferation of the germ line stops but the capacity of the germ line cells to replicate their DNA is unaffected.

The polar bodies decondense in embryos raised at the restrictive temperature. Chromosomes decondense and become surrounded by the nuclear envelope in embryos after inactivation of cdc2A171T at 30oC for 15 minutes.

fzy- embryos carrying P{Dmcdc2A171T} at 18oC exhibit mitotic arrest at stage 11 in the ventral region, as expected. Temperature shift to the restrictive temperature causes a drastic reduction in the number of metaphase arrested cells.

Meiotic spindles and metaphase plates are never formed at high temperatures. Chromosomes still condense in late spermatocytes and spermatid differentiation continues.

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
Comments

Construct has no activity at high temperatures (29oC), rescue is best at 18oC.

Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (6)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (8)