FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Recombinant Construct: P{alka-GAL4.M}
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General Information
Symbol
P{alka-GAL4.M}
FlyBase ID
FBtp0159974
Feature type
transgenic_transposable_element
Component Allele(s)
Scer\GAL4alka.PM
Size
Expression Data
GAL4 reporter/driver
Associated insertion(s)
1 available
Molecular map
Description and Uses
Construct components
Component allele Scer\GAL4alka.PM
Transgenic product class
Component
Use(s)
Regulatory region(s)
alka
Encoded product / tool
GAL4
Description

The alka promoter drives expression of a GAL4 driver.

(Mi et al., 2023)
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
adult stage
gustatory receptor neuron of the labellum | subset
(Mi et al., 2023)
prothoracic leg taste bristle chemosensory neuron
(Mi et al., 2023)
labellum
(Mi et al., 2023)
labellar taste bristle chemosensory neuron
(Mi et al., 2023)
labellar taste bristle sensory neuron
(Mi et al., 2023)
antennal sense organ
(Mi et al., 2023)
maxillary palp sense organ
(Mi et al., 2023)
Additional Information
Statement
Reference

Expression is specifically expressed in a subset of labellar gustatory receptor neurons (GRNs) that innervate S-type sensilla. Only a small percentage of GRNs specified by alka-Gal4 overlap with Gr66a-expressing (bitter) GRNs, Gr64f-expressing (sweet) GRNs, or Ir76b-expressing GRNs (salt). No obvious overlap with other types of GRNs, such as ppk28-expressing GRNs (water detection) or ppk23-expressing GRNs involved in sensing high concentrations of calcium as well as pheromones was observed. Expression was observed in tarsal chemosensory neurons. Expression was not observed in brain except in axonal projections of chemosensory neurons from the labellum, the antenna and the maxillary palp.

(Mi et al., 2023)
 
Marker for
Reflects expression of
alka
(Mi et al., 2023)
Reporter construct used in assay
Progenitors and Descendants
progenitor(s)
descendant(s)
Comments
Stocks (0)
Stocks containing insertion(s) of this recombinant construct
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (2)
Reported As
Symbol Synonym
P{alka-GAL4.M}
(FlyBase, 1992-)
alka-Gal4
(Mi et al., 2023)
Secondary FlyBase IDs
    References (3)