FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\Klp61F06345
Open Close
General Information
Symbol
Dmel\Klp61F06345
Species
D. melanogaster
Name
FlyBase ID
FBal0043695
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
klp61F1
Key Links
Nature of the Allele
Progenitor genotype
Associated Insertion(s)
Cytology
Description

Insertion of a P{PZ} element upstream and within 1.5kb of the P{PZ} element insertion in Klp61F07012.

Allele components
Component
Use(s)
Inserted element
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

Acentrosomal meiotic spermatocytes of Klp61F07012/Klp61F06345 transheterozygotes exhibit microtubules, but do not show microtubule asters or detectable spindle structures.

The fusome in Klp61F06345 testes appears to be fragmented.

The brains of homozygous and hemizygous larvae have a reduced frequency of anaphase figures, and an increased frequency of polyploid figures and overcondensed chromosomes compared to wild-type. The brains of Klp61F06345/Klp61Furc-4 larvae have a less severe mitotic phenotype. 28.4% of the mitotic spindles in homozygous larval brain cells are monopolar, 65.2% are bipolar but monastral (only one half-spindle appears to be organised by a centrosome with a focus of γ tubulin) and 6.4% are normal biastral bipolar spindles. 13.3% of the mitotic spindles in Klp61F06345/Klp61Furc-4 larval brain cells are monopolar, 25.8% are bipolar but monastral (only one half-spindle appears to be organised by a centrosome with a focus of γ tubulin) and 60.9% are normal biastral bipolar spindles. The brains and imaginal discs are small compared to wild-type in approximately 50% of homozygous and hemizygous larvae, and often similar to wild-type in size and morphology in Klp61F06345/Klp61Furc-4 larvae. Nearly all homozygous spermatocytes are equal in size and contain equivalent amounts of chromatin. The spermatocytes contain a variable number of centriole pairs, the most common being 0 (35% of spermatocytes), 2 (25% of spermatocytes) and 4 (24% of spermatocytes) centriole pairs, and 10% of spermatocytes contain an odd number of centriole pairs.

Homozygotes and hemizygotes die as late third instar larvae or early pupae. Neuroblasts isolated from third instar homozygous larvae show an increased mitotic index and complete lack of anaphase figures, indicating metaphase arrest. Chromosomes are hypercondensed compared to wild-type and highly polyploid cells are common.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Enhancer of
Statement
Reference

Klp61F[+]/Klp61F06345 is an enhancer of visible phenotype of Hsap\MAPTGMR.Ex.PJ

Other
Phenotype Manifest In
Suppressed by
Statement
Reference

Klp61F06345 has spindle & neuroblast & larva phenotype, suppressible by ncd9

Enhancer of
Statement
Reference

Klp61F[+]/Klp61F06345 is an enhancer of eye phenotype of Hsap\MAPTGMR.Ex.PJ

Other
Statement
Reference

Klp61F06345, ncd1 has chromatin & spermatocyte phenotype

Additional Comments
Genetic Interactions
Statement
Reference

Klp61F06345 ncd9/Klp61Furc-1 ncd1 adults are recovered at 28% of the frequency expected for full viability. Klp61F06345 ncd9 double mutant adults are recovered at 46% of the frequency expected for full viability. Biastral spindles in Klp61F06345 ncd1 spermatocytes sometimes show multiple masses of γ-tubulin at spindle poles and an apparently polyploid complement of chromatin. More than 96% of spindles in Klp61F06345 ncd9 mutant brains are biastral.

Xenogenetic Interactions
Statement
Reference

One copy of Klp61F06345 enhances the rough eye phenotype seen in flies expressing Hsap\MAPTGMR.Ex.PJ.

Complementation and Rescue Data
Images (0)
Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer

A. Spradling.

Comments
Comments

Excision of the P{PZ} element is accompanied by reversion of lethality and the abnormal mitotic phenotype.

Klp61F alleles form the following phenotypic series, from the most to the least severe: Klp61Furc-1 > Klp61Furc-3 > Klp61F06836, Klp61F07012 > Klp61F06345 > Klp61Furc-4.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (8)
Reported As
Symbol Synonym
KLP61F1
Klp61F06345
klp61F06345
l(3)0701206345
Name Synonyms
Secondary FlyBase IDs
    References (11)