FB2026_02 , released June 18, 2026
Allele: Dmel\Mcr1
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General Information
Symbol
Dmel\Mcr1
Species
D. melanogaster
Name
FlyBase ID
FBal0156624
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
E(br)155
Key Links
Genomic Maps

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

Amino acid replacement: S282L.

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

C8079766T

Amino acid change:

S282L | Mcr-PA

Reported amino acid change:

S282L

Comment:

Reported to be at coordinate 2L:8079766 of GB:AE014134.5.

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

Mutant embryos lack nearly all ventral denticle belts, have convoluted trachea and have ectopic deposits in the region of the salivary glands. Defects in dorsal closure are sometimes seen.

Mutant embryos show defects in septate junction structure in the salivary glands, hindgut and trachea (assayed by cora protein localisation). The dorsal tracheal trunk epithelium allows dye to pass between the haemocoel and the tracheal lumen in a dye exclusion assay in mutant stage 17 embryos, indicating a failure in paracellular barrier function.

7% of heterozygotes show a malformed leg phenotype. Homozygotes show 97 +/- 1% embryonic lethality and nearly 50% fail to complete dorsal closure.

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

E(br)155[+]/Mcr1 is an enhancer of visible phenotype of br1

Other
Statement
Reference

Mcr1, Rho1J3.8/Rho1[+] has visible | dominant phenotype

E(br)155[+]/Mcr1, Rho1J3.8 has visible phenotype

Phenotype Manifest In
Enhancer of
Statement
Reference

E(br)155[+]/Mcr1 is an enhancer of leg phenotype of br1

Other
Statement
Reference

Mcr1, Rho1J3.8/Rho1[+] has leg phenotype

Additional Comments
Genetic Interactions
Statement
Reference

29% of br1 ; E(br)155Ebr155/+ flies show a malformed leg phenotype. The predominant leg phenotype in br1/Y ; E(br)155Ebr155/+ flies is short, fat tarsal segments with normal femurs and tibias. 7% of br5/+ ; E(br)155Ebr155/+ flies show a malformed leg phenotype. 57% of E(br)155Ebr155 Rho1J3.8 double heterozygotes show a malformed leg phenotype in at least one leg. 0% of E(br)155Ebr155 Rho1k02107b double heterozygotes show a malformed leg phenotype in at least one leg. 16% of E(br)155Ebr155 Rho1E3.10 double heterozygotes show a malformed leg phenotype in at least one leg. 6% of E(br)155Ebr155 RhoGEF204291 double heterozygotes show a malformed leg phenotype in at least one leg. 1% of E(br)155Ebr155 RhoGEF211-3 double heterozygotes show a malformed leg phenotype in at least one leg. 7% of E(br)155Ebr155 zipEbr double heterozygotes show a malformed leg phenotype in at least one leg. 1% of E(br)155Ebr155 zip1 double heterozygotes show a malformed leg phenotype in at least one leg. 4% of E(br)155Ebr155 zip33-1 double heterozygotes show a malformed leg phenotype in at least one leg.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer

Separable from: uif1.

Selected as: a mutation that enhances the br1 malformed leg phenotype.

The uif1 allele is a second site mutation on the E(br)155Ebr155 chromosome. It has not been possible to recombine the two mutations aprt.

The Mcr1 and uif1 mutations were originally recovered on the same "E(br)155" chromosome. The two mutations have been recombined apart.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
Reported As
Symbol Synonym
Name Synonyms
Secondary FlyBase IDs
    References (3)