FB2024_03 , released June 25, 2024
Allele: Dmel\Catn1
Open Close
General Information
Symbol
Dmel\Catn1
Species
D. melanogaster
Name
FlyBase ID
FBal0001548
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Nature of the Allele
Progenitor genotype
Cytology
Description

Single amino acid replacement in the haem domain.

Amino acid replacement: E189K. Nucleotide substitution: G?A.

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

G18826845A

Reported nucleotide change:

G?A

Amino acid change:

E189K | Cat-PA

Reported amino acid change:

E189K

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 ( 1 )
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

Catn1 mutants show a significant increase in DNA damage in adult midgut progenitor cells (esg-positive intestinal stem cells and enteroblasts), assessed by pS/TQ immunofluorescence, as compared to controls.

Catn1 heterozygotes show increased mortality when exposed to ethanol during development compared to controls.

Catn1 homozygous adult males exhibit a severe decrease in lifespan under normal or chronic hypoxic conditions, as compared to controls.

Reactive oxygen species generation and BrdU incorporation in the midguts of mutant flies is significantly higher than in wild-type flies.

The intestinal stem cell populations in the midgut of mutant flies is increased compared to controls. The number of enteroendocrine cells is increased by 2.2 fold, while the number of differentiated enterocytes with large nuclei is reduced by 0.7 fold in the mutant adult midgut.

Only about 10% of homozygous Catn1 flies eclose from their pupal cases. Homozygous Catn1 mutants also show a reduced lifespan, living half as long as wild type flies.

Catn1/Catn4 transheterozygotes are very sensitive to H2O2. Sensitivity is considerably attenuated in the presence of a single copy of P{Cat7.0}.

Catalase activity reduced.

Exhibit gene dosage effect for catalase activity as a heterozygote. H2O2 hypersensitive phenotype.

CRM negative.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
NOT suppressed by
Statement
Reference

Catn1 has short lived phenotype, non-suppressible by GtpxlacZ

Enhancer of
Statement
Reference

Catn1/Cat[+] is an enhancer of paralytic phenotype of Hsap\GFAPUAS.cWa, Scer\GAL4repo

Catn1/Cat[+] is an enhancer of lethal | recessive phenotype of Trxr1G0481

Phenotype Manifest In
Enhancer of
Statement
Reference

Catn1/Cat[+] is an enhancer of lamina phenotype of Hsap\GFAPUAS.cWa, Scer\GAL4repo

Catn1/Cat[+] is an enhancer of adult brain phenotype of Hsap\GFAPUAS.cWa, Scer\GAL4repo

Suppressor of
Statement
Reference

Catn1 is a suppressor of eye phenotype of Raf::tor12D.sev

Catn1 is a suppressor of eye phenotype of sevS11.Tag:MYC

Catn1 is a suppressor of ommatidium phenotype of sevS11.Tag:MYC

NOT Suppressor of
Statement
Reference

Catn1 is a non-suppressor of eye phenotype of Ras64BV12.sev

Catn1 is a non-suppressor of photoreceptor neuron phenotype of Ras64BV12.sev

Additional Comments
Genetic Interactions
Statement
Reference

A Catn1/+ background suppresses the rough eye phenotype observed when DrefScer\UAS.cSa is expressed in the developing eye under the control of Scer\GAL4GMR.PS.

Expression of either one or two copies of PHGPxT:Ecol\lacZ is unable to suppress the reduction in lifespan seen in Catn1 mutant flies.

Xenogenetic Interactions
Statement
Reference

A Catn1 heterozygous background significantly enhances Hsap\GFAPScer\UAS.cWa toxicity and increases the frequency of mechanically-stimulated seizures in these flies. An increase in cellular toxicity does not alter the number of inclusion bodies but does increase autophagy induction.

A Catn1 heterozygous background significantly enhances Hsap\GFAPR79H.Scer\UAS toxicity and increases the frequency of mechanically-stimulated seizures in these flies. An increase in cellular toxicity does not alter the number of inclusion bodies but does increase autophagy induction.

Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (2)
Notes on Origin
Discoverer
Comments
Comments

In Catn1 eggs of L.boulardi are melanotically encapsulated but, in contrast to the wild-type, survive.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
References (18)