FlyBase Recombinant Construct Report: P{Gr28b.a-GAL4.3}

FB2026_02 , released June 18, 2026

FB2026_02 , released June 18, 2026

Recombinant Construct: P{Gr28b.a-GAL4.3}

General Information

Symbol

P{Gr28b.a-GAL4.3}

FlyBase ID

FBtp0057243

Feature type

transgenic_transposable_element

Component Allele(s)

Scer\GAL4^Gr28b.a.3

Also Known As

Gr28b.a-GAL4

Size

Expression Data

GAL4 reporter/driver

Associated insertion(s)

Molecular map

Description and Uses

Construct components

Component allele Scer\GAL4^Gr28b.a.3

Transgenic product class

Component

Use(s)

Regulatory region(s)

Encoded product / tool

binary expression system - driver

Description

A 3kb fragment from the Gr28b a isoform promoter is fused upstream of sequence encoding a GAL4 driver.

(Weiss et al., 2011)

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

Component Allele

Phenotypic Data

Scer\GAL4^Gr28b.a.3

Phenotypic Class Phenotype Manifest In Detailed Description

Expression Data

Reporter Expression

distribution deduced from reporter (Gal4 UAS)

Stage

Tissue/Position (including subcellular localization)

Reference

third instar larval stage

gustatory receptor neuron of terminal organ

(Kwon et al., 2011)

larval gustatory receptor neuron of the dorsal pharyngeal sense organ

(Kwon et al., 2011)

larval gnathal ganglion

(Kwon et al., 2011)

larval dorsal pharyngeal gustatory receptor neuron DP1

(Choi et al., 2016)

high salt/bitter-sensing neuron | subset of prothoracic tarsal segment 5

(Ling et al., 2014)

gustatory receptor neuron | subset of short labellar taste bristle | subset

(Weiss et al., 2011)

gustatory receptor neuron | subset of intermediate labellar taste bristle | subset

(Weiss et al., 2011)

high salt/bitter-sensing neuron of adult labellum sensillum

(Weiss et al., 2011)

intermediate labellar taste bristle I-a

Comment: isoform Gr28b-RA

(Weiss et al., 2011, Weiss et al., 2011)

intermediate labellar taste bristle

Comment: isoform Gr28b-RA

(Weiss et al., 2011, Weiss et al., 2011)

intermediate labellar taste bristle I-b

Comment: isoform Gr28b-RA

(Weiss et al., 2011, Weiss et al., 2011)

short labellar taste bristle S-b

Comment: isoform Gr28b-RA

(Weiss et al., 2011, Weiss et al., 2011)

short labellar taste bristle S-a | intense

Comment: isoform Gr28b-RA

(Weiss et al., 2011)

short labellar taste bristle S-a

Comment: isoform Gr28b-RA

(Weiss et al., 2011, Weiss et al., 2011)

Additional Information

Statement

Reference

ScerGAL4^Gr28b.a.3 drives expression in larval gustatory receptor neuron of the epiphysis DP1, where it is coexpressed with ScerGAL4^Gr33a.4.7, ScerGAL4^Gr66a.1.8, ScerGAL4^Gr93a.5, ScerGAL4^Gr32a.3.7.PW, ScerGAL4^Gr22b.5.8, ScerGAL4^Gr39a.a.3.4, ScerGAL4^Gr39b.4.4, ScerGAL4^Gr22d.3.1, ScerGAL4^Gr39b.4.4, ScerGAL4^Gr22e.2.5, ScerGAL4^Gr39a.b.1, ScerGAL4^Gr58b.1, and ScerGAL4^Gr59d.4.1.

(Choi et al., 2016)

ScerGAL4^Gr28b.a.3 drives expression of Gr28b isoform a.

(Ling et al., 2014)

ScerGAL4^Gr28b.a.3 is expressed in gustatory neurons of all of the bitter-sensitive small labellar taste bristles, and in gustatory neurons of the four posterior-most intermediate labellar taste bristles.

(Weiss et al., 2011)

ScerGAL4^Gr28a.PT expresses the isoform Gr28b-RA which is found in all of the short and in a few of the intermediate bitter-sensitive sensilla of the labellum.

(Weiss et al., 2011)

ScerGAL4^Gr28a.PT is expressed in all of the short and in a few of the intermediate bitter-sensitive sensilla of the labellum.

(Weiss et al., 2011)

ScerGAL4^Gr28b.a.3 drives expression in one gustatory receptor neuron of the larval terminal organ and in one neuron of the dorsal pharyngeal sense organ (DPS or epiphysis). The dorsal organ neuron also expresses ScerGAL4^Gr33a.4.7, ScerGAL4^Gr66a.1.8, ScerGAL4^Gr32a.3.7.PW, ScerGAL4^Gr39a.a.3.4, ScerGAL4^Gr39a.b.1, ScerGAL4^Gr59d.4.1, ScerGAL4^Gr9a.6.3, ScerGAL4^Gr22e.2.5, ScerGAL4^Gr22a.4.2, ScerGAL4^{Gr28b.e.4.245}, ScerGAL4^Gr36b.0.9, ScerGAL4^Gr36c.2.5, ScerGAL4^Gr58b.1, ScerGAL4^Gr59a.1.5, ScerGAL4^Gr59c.5.5 and ScerGAL4^Gr93b.5.3.

(Kwon et al., 2011)

Marker for

Reflects expression of

(Ling et al., 2014, Kwon et al., 2011, Weiss et al., 2011, Weiss et al., 2011)

Reporter construct used in assay

Progenitors and Descendants

progenitor(s)

descendant(s)

Comments

Stocks (2)

Stocks containing insertion(s) of this recombinant construct

57615

w^*; wg^Sp-1/CyO; P{Gr28b.a-GAL4.3}5

58369

w^*; P{Gr28b.a-GAL4.3}14; Dr¹/TM3, Sb¹

External Crossreferences and Linkouts ( 0 )

Synonyms and Secondary IDs (4)

Reported As

Symbol Synonym

Gr28b.a

(Shankar et al., 2015)

Gr28b.a-GAL4

(Sang et al., 2019, Miroschnikow et al., 2018, Choi et al., 2016, Delventhal and Carlson, 2016, Kwon et al., 2011)

Gr28b.a-Gal4

(Kwon et al., 2014, Park and Kwon, 2011)

P{Gr28b.a-GAL4.3}

(FlyBase, 1992-)

Secondary FlyBase IDs

References (15)

Report Sections