FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\mrn5
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General Information
Symbol
Dmel\mrn5
Species
D. melanogaster
Name
FlyBase ID
FBal0012438
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

Nucleotide substitution: C286T.

Amino acid replacement: Q96term.

Amino acid replacement: Q96@.

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

C15580221T

Reported nucleotide change:

C286T

Amino acid change:

Q96term | mrn-PA

Reported amino acid change:

Q96term

Comment:

Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.

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

mrn5/mrnEP3605 adults have defective bristles and a thin thorax and abdomen (100% penetrance).

88% of mrnEP3605/mrn5 larvae have melanotic tumours. In addition, there is a highly reproducible and specific melanisation at the intersection between the midgut and posterior gut, in the imaginal ring region.

Heterozygous larvae are more sensitive to UVB irradiation compared to controls.

Homozygous larvae and pupae are smaller than controls.

Mitotic spreads of mrnEP3605/mrn5 larval neuroblasts show a high rate of chromosome aberrations, including fragmentation of chromosomes and partial chromosome condensation.

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

mrn5 has lethal | recessive phenotype, non-suppressible by Tfb5Hsp83.PAF

Phenotype Manifest In
Suppressed by
Statement
Reference
Additional Comments
Genetic Interactions
Statement
Reference

The defective bristle and thin thorax and abdomen phenotypes seen in mrn5/mrnEP3605 adults are suppressed by Tfb5Hsp83.PAF.

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

mrn5 is partially rescued by mrnHsp83.PF

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

Selected as: Lethal over Df(3L)BK10.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
References (6)