FB2026_03 , released September 17, 2026
Recombinant Construct: P{GMR19B09-lexA}
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General Information
Symbol
P{GMR19B09-lexA}
FlyBase ID
FBtp0088060
Feature type
transgenic_transposable_element
Component Allele(s)
Ecol\lexAGMR19B09
Also Known As
R19B09-LexA
Size
Expression Data
Associated insertion(s)
2 available
Molecular map
Description and Uses
Construct components
Component
Use(s)
Marker(s)
w+mC
Component allele Ecol\lexAGMR19B09
Transgenic product class
Component
Use(s)
Regulatory region(s)
GMR19B09
Encoded product / tool
lexA::p65
Description

A 3683 base pair fragment from the flanking non-coding or intronic region of Lgr3 is fused upstream of a Drosophila core synthetic promoter (DSCP) followed by sequence encoding a lexA::p65 driver. The driver sequence has been optimized for Drosophila codon usage. An Hsp70 transcriptional terminator is present.

(Pfeiffer et al., 2013.10.9)
Sequence Data
Sequence (FB)
Associated Sequence Data
DDBJ / EMBL / GenBank
DNA Sequence
Extent
Segments and Size
Total Size
Left end
Right end
 
Segments
Num
Orientation
Symbol
Reference
Phenotypic Data
Expression Data
Reporter Expression
distribution deduced from reporter (Gal4 UAS)
Stage
Tissue/Position (including subcellular localization)
Reference
larval stage
larval central nervous system | restricted
(Vallejo et al., 2015)
larval insulin secreting cell of pars intercerebralis
(Vallejo et al., 2015)
third instar larval stage
larval pars intercerebralis | restricted
(Garelli et al., 2015)
late third instar larval stage
larval neuron | subset of larval central nervous system
(Colombani et al., 2015)
larval insulin secreting cell of pars intercerebralis
(Colombani et al., 2015)
adult stage | female
adult median bundle | intense
(Meissner et al., 2016)
adult stage | male
adult median bundle | faint
(Meissner et al., 2016)
Additional Information
Statement
Reference

EcollexAGMR19B09 colocalizes with ScerGAL4VP16.Lgr3 in the median bundle of females, and has lower expression in males.

(Meissner et al., 2016)

GFP reconstitution across synaptic partners (GRASP) shows synaptic connections between ScerGAL4Ptth.cMa-positive prothoracic gland innervating neurons and EcollexAGMR19B09-positive dorsomedial neurosecretory cells.

(Colombani et al., 2015)

EcollexAGMR19B09 drives expression in around 12 neurons per hemisphere in the central larval brain as well as some neurons in the ventral nerve cord. GFP reconstitution across synaptic partners (GRASP) shows extensive connections to ScerGAL4Ilp3.PC positive neurons.

(Vallejo et al., 2015)

EcollexAGMR19B09 co-expresses with ScerGAL4Mz699 in a bilateral pair of neurons in the larval pars intercerebralis.

(Garelli et al., 2015)
 
Marker for
Reflects expression of
Lgr3
(Meissner et al., 2016, Vallejo et al., 2015)
Reporter construct used in assay
Progenitors and Descendants
progenitor(s)
descendant(s)
Comments
Stocks (1)
Stocks containing insertion(s) of this recombinant construct
Bloomington
52539
w1118; P{GMR19B09-lexA}attP40
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (5)
Reported As
Symbol Synonym
19B09
(FlyBase, 1996-)
GMR19B09-LexA
(Garelli et al., 2015)
P{GMR19B09-lexA}
(FlyBase, 1996-)
R19B09-LexA
(Meissner et al., 2016, Colombani et al., 2015, Vallejo et al., 2015)
R19B09-lexA
(Volonté et al., 2026)
Secondary FlyBase IDs
    References (8)