FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\Bin1R7-18
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General Information
Symbol
Dmel\Bin1R7-18
Species
D. melanogaster
Name
FlyBase ID
FBal0281002
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Nature of the Allele
Associated Insertion(s)
Caused by aberration
Cytology
Description

Consists of a deletion that removes the 5' end of the Bin1 gene. Retains part of the original P{EP}sraEP3462 inserted transposon.

Imprecise excision of P{EP}sraEP3462 has removed the N-terminal 2/3 of Bin1 and 23bp of the 5' UTR of next ORF, sra.

601 bp deletion from P{EP} insertion site. So to be exact it removes 448bp out of 633bp of the Bin1 gene.

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

Approximate boundaries of the Bin1R7-18 deletion, resulting from excision of P{EP}sraEP3462 and reported as removing 601 bases from the P insertion site including 448 of the 633 bases of Bin1.

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

Approximately 80% of Bin1R7-18/Df(3R)sbd45 males show transformation of A6 to A5, as judged by the presence of at least one bristle on the sixth sternite.

Bin1R7-18/+ enhances the silencing of the w marker gene which is seen in the P{UAS-lacZ.Abd-B.24F6}GCD-6 insertion, such that the eye is less pigmented in the presence of Bin1R7-18/+.

Homozygous Bin1R7-18 mutants are lethal, with arrest occurring most often during pupal stages of development. About 10% are also larval lethal. There is no embryonic lethality. The larval and pupal lethality is temperature sensitive; at 22oC homozygotes hatch normally and develop into viable adults. Homozygous Bin1R7-18 females produce eggs in which about 90% fail to develop. Although oogenesis appears normal, the eggs arrest prior to pronuclear fusion. At 29oC progeny from heterozygous mothers display defects. Eggs develop but about 8% are embryonic lethal. the embryos have normal-looking cuticles and mouth hooks, but they die at late stages just prior to hatching as first instar larvae. Developing embryos from homozygous mutant germ-line clones show about 12% embryonic lethality at 25oC which increases to 21% at 29oC. These embryos typically have holes or patches of naked cuticle in the anterior and thoracic regions. In some embryos, the head skeleton is collapsed, and a smaller number of embryos have segmentation defects. Larvae that hatch survive to adulthood if they have wild-type Bin1 contributed from the male.

The frequency of homozygous mutants recovered is very low (~1 in 300). About half of the heterozygous adults show mutant wing phenotypes. A large percent of eggs from homozygous mothers burst upon removal of chorion. Almost all unhatched embryos have head defects. A small number of first instar larvae die after hatching and ~10% show segmentation defects. About half of the third instar larvae develop black masses and die as they pupate. Surviving adults show mild segmentation defects.

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

Bin1R7-18 has lethal | heat sensitive phenotype, non-suppressible by sracHa

Suppressor of
Statement
Reference

Bin1[+]/Bin1R7-18 is a suppressor of visible | recessive phenotype of sdFab-X

Other
Statement
Reference
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference

Bin1R7-18/+, sra687/+ females are fertile, while Bin1R7-18/+, sraA108/+ and Bin1R7-18/+, sraA426/+ females show reduced fertility compared to control siblings.

The sracHa transgene does not rescue the Bin1R7-18 mutation.

TrlR67/Bin1R7-18 and Rpd3def24/Bin1R7-18 transheterozygous males do not show transformation of A6 to A5.

The wing blade destruction phenotype of homozygous sdFab-X females is strongly suppressed by Bin1R7-18/Df(3R)sbd45 : 13% of the double mutants show wing blade destruction in one wing, and 4% show wing blade destruction in both wings.

The wing blade destruction phenotype of homozygous sdFab-X females is significantly suppressed by Bin1R7-18/+ (39% show wing blade destruction in one wing, 36% show wing blade destruction in both wings).

9% of bcd6/Bin1R7-18 double heterozygotes die as unhatched embryos with serious head defects including missing mouth parts. These larvae are missing labral structures most frequently the labrum itself and the epistomal sclerite. In some cases the dorsal bridge, dorsal bridge, dorsal and ventral arms, and post pharyngeal wall are absent or reduced in size.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Rescued by

Bin1[+]/Bin1R7-18 is rescued by Bin1+t4

Partially rescued by
Comments

Bin1T:Ivir\HA1 partially rescues the A6 to A5 transformation seen in Bin1R7-18/Df(3R)sbd45 males, reducing the fraction of males that contain at least one bristle on the sixth sternite from approximately 80% to 50%, and also reducing the severity of the transformation (the frequency of males having more than 2 bristles on the sixth sternite is reduced from 34% to 4%).

Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (5)
Reported As
Symbol Synonym
Bin1117
Bin1R7-18
sap18R7-18
Name Synonyms
Secondary FlyBase IDs
  • FBal0176374
  • FBal0134406
References (6)