FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\l(2)glts3
Open Close
General Information
Symbol
Dmel\l(2)glts3
Species
D. melanogaster
Name
FlyBase ID
FBal0051412
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
lglts3
Key Links
Genomic Maps

Nature of the Allele
Progenitor genotype
Cytology
Description

Nucleotide substitution: C7762T. Amino acid replacement: S311F.

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

C14806T

Reported nucleotide change:

C7762T

Amino acid change:

S311F | l(2)gl-PA; S303F | l(2)gl-PB; S311F | l(2)gl-PC; S262F | l(2)gl-PD; S262F | l(2)gl-PE; S262F | l(2)gl-PF; S311F | l(2)gl-PG; S311F | l(2)gl-PH; S311F | l(2)gl-PI; S311F | l(2)gl-PJ; S311F | l(2)gl-PK

Reported amino acid change:

S311F

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 ( 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

When l(2)gl4/l(2)glts3 flies are cultivated at 27.5[o]C, the temperature-sensitive l(2)glts3 partially loses its activity, and 86% of individual flies successfully develop into adulthood. Approximately 28% of l(2)gl4/l(2)glts3 flies carry at least one defective extrasensory bristle, such as a duplicated bristle or a socket without a bristle, as a result of the partial loss of l(2)gl at the semi-restrictive temperature of 27.5[o]C.

In l(2)gl4/l(2)glts3 flies the border follicle cells have much reduced polarity. Delamination of these cells is delayed, but their migration is accelerated.

The polarity of the dorsal leading edge cells of the embryonic epidermis is disrupted, though other ectodermal cells are normal. Embryos reared at 29oC show failures of dorsal closure and failure of head involution. Cephalopharyngeal skeleton and filzkorper can be absent or not externalized, respectively. 58% of cuticles show a dorsal hole. Denticle belts are extended, reaching up to 60% of lateral extension in some mutant individuals. Rare embryos show the phenotype of partly lacking ventral epidermis. Less than 8% of cuticles show patches of denticle belt fusion or naked cuticle, indicating that on the whole wg and hh signaling are unaffected.

Exposure to 29oC during external sensory organ development causes transformation of inner cells to outer cells causing double socket and hair phenotypes.

Ovaries of l(2)glts3 females shifted to 29oC immediately after hatching and reared at 29oC for 2 days are severely reduced in size, due to a lack of late stage egg chambers.

The majority of intact wing imaginal discs cultured in vivo at 15oC remain morphologically normal but show no significant growth. The majority of intact discs grown at 29oC become abnormal and show signs of growth. Culture of amputated discs at 15oC generates abnormal discs. Gamma irradiated discs (whole or amputated) become abnormal after in vivo culture at 15oC but show no significant growth. l(2)glts1/l(2)glts3 and l(2)glts2/l(2)glts3 heteroallelic females exhibit normal morphology of ovaries and developing egg chambers. Heterozygous females lay normal eggs at 22oC and 29oC. At 29oC the eggs fail to develop into viable larvae. None of the unhatched eggs show differentiated larval cuticles. Embryos stop developing at the stage of germ band formation, none of the embryos exhibit dorsal closure and differentiation of the larval hypodermis. None of the embryos have developed a well defined CNS.

Viability of heterozygotes with l(2)glts1 and l(2)glts2 is temperature-dependent. At 22oC heteroallelic females produce eggs that develop into normal embryos, at 29oC eggs with normal morphology are produced but they fail to hatch into viable larvae.

Lethality of heterozygotes with Df(2L)net62 when raised at 29oC is complete. Homozygous mutant larvae produced at 29oC pupariate on a normal timetable and die during the early pupal stages. Male homozygotes and heterozygotes with l(2)glts1 or l(2)glts2 show male sterility when raised at 27oC. Genitalia are incompletely rotated, disorganized and protruding. Mutant embryos from mutant mothers show developmental block at germ band shortening. Head involution fails but segmentation progresses normally. Cell shape changes at the heading edge of the dorsal epidermis fail to occur, reminiscent of zip and scb mutant phenotypes. Midgut is hypertrophied and the yolk remains incompletely digested. The visceral mesoderm is apparently normal. Midgut cells arrest their differentiation early. Causes a temperature sensitive reduction in female fertility. Oogenesis blocks at stage 7-8 in females raised at 29oC for 6 days. Blocked egg chambers show a multilayered accumulation of probably follicular cells at the anterior and posterior tips. These cells become internalized into the space normally occupied by the ooplasm. The germarium becomes fused with the youngest egg chambers.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Suppressed by
Statement
Reference

l(2)glts3/Df(2L)net62 has lethal | heat sensitive phenotype, suppressible by Dpse\l(2)gl+t12.2

Suppressor of
Statement
Reference
Other
Phenotype Manifest In
Enhanced by
Statement
Reference

l(2)glts3/l(2)gl4 has mechanosensory chaeta | heat sensitive phenotype, enhanceable by mts02496

l(2)glts3/l(2)gl4 has mechanosensory chaeta | heat sensitive phenotype, enhanceable by mtsXE-2258

l(2)glts3 has eo neuron phenotype, enhanceable by numb[+]/numb2

l(2)glts3 has tormogen cell phenotype, enhanceable by numb[+]/numb2

l(2)glts3 has external sensory organ phenotype, enhanceable by numb[+]/numb2

Suppressor of
NOT Suppressor of
Statement
Reference
Other
Additional Comments
Genetic Interactions
Statement
Reference

The addition of one copy of mts02496 or mtsXE-2258 to l(2)gl4/l(2)glts3 flies reduces the eclosion rate to 72% and 42% respectively.

The presence of one copy of mts02496 or mtsXE-2258 in l(2)gl4/l(2)glts3 flies increases the frequency of defective bristle formation to 33% and 64% respectively (compared to 28% in l(2)gl4/l(2)glts3 mutants).

Double mutants with ecd1 show a delay in larval life and the formation of bloated and giant larvae, similar to the phenotype of the l(2)gl null mutants. Wing imaginal discs show neoplastic transformations.

Xenogenetic Interactions
Statement
Reference

Lethality with Df(2L)net62 can be completely rescued by Dpse\l(2)gl+t12.2. Neither giant larvae nor tumorous brain\imaginal discs are observed.

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

Baek and Hanratty

Comments
Comments

l(2)glts3 has been used to show that the l(2)gl product is required both during embryonic (stage 8-12) and larval (third instar) life.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
References (17)