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General Information
D. melanogaster
FlyBase ID
Also Known As
NP2426, Gal4-LN2, LN2-Gal4, NP2426-GAL4
Inserted Element

GAL4 reporter/driver

Affected gene(s)
Viability / fertility
Associated allele(s)
Stock availability
Genomic Location
Chromosomal Location
X ( 6F5 )
Sequence Location
X:7,096,129..7,096,129 [-]
Target / Docking site
Member of Large Scale Dataset(s)

A set of transgenic insertion stocks derived by TE mobilization using the P-element construct P{GawB}. The P{GawB} construct carries a w+mW.hs mini-white visible marker and Scer\GAL4 driver/enhancer trap sequences. The GAL4-UAS system is a binary system using Scer\GAL4, a yeast transcription activator protein gene, and Scer\UAS, the DNA binding site for the GAL4 protein. The P{GawB} construct acts as an enhancer trap: expression of the GAL4 is sensitive to enhancers in the genomic region of an insertion. When paired with a construct or insertion carrying a reporter gene downstream of Scer\UAS, the reporter gene is driven by and reflects the expression of the GAL4.

Detailed Mapping Data
Chromosome (arm)
Sequence Location
X:7,096,129..7,096,129 [-]
Cytological location (computed by FlyBase)
6F5 (inferred by FlyBase from sequence location)
Cytological location (reported)
Insertion into Natural transposon
Comments concerning location
Sequence Data
Flanking sequence
Inserted Element
Location-dependent role
Size (Kb)


Associated alleles
Molecular map
Affected Gene(s)
Alleles and Phenotypes
Expression Data
Reporter Expression
distribution deduced from reporter (Gal4 UAS)
Tissue/Position (including subcellular localization)
Additional Information

Scer\GAL4NP2426 drives expression in around 40 type B local interneurons. Their cell bodies cluster in the dorso-lateral region of the antennal lobe and project to all antennal lobe glomeruli and the antennal lobe hub. An additional three interneurons with ventrally located cell bodies are labeled. These project to antennal lobe glomeruli VA5, VA4, VL2a, VM1, VM6, VP1, VP2 and VP3.

Scer\GAL4NP2426 drives expression in six to eight neurons that innervate the larval antennal lobe (AL) and the subesophageal ganglion. Innervation pattern becomes increasingly dense during larval development. The cell bodies of two to three labeled neurons are located in a cluster ventrolateral to the AL. The other four to five cell bodies are located dorsolateral to the AL.

Scer\GAL4NP2426 is expressed in 37 local neurons of the antennal lobe.

The approximately 40 somata of cells expressing Scer\GAL4NP2426 are predominantly found in a lateral cell body cluster of the antennal lobe, with a few located in a ventral cell body cluster.

Marker for
Data on Genetic Line
Line ID
Origin as a multiple insertion line
Progenitor(s) within the Genome
Related Aberration or Balancer
Stocks (1)
External Crossreferences and Linkouts ( 1 )
GenBank Nucleotide - A collection of sequences from several sources, including GenBank, RefSeq, TPA, and PDB.

Location X:6941364-6941365 refined by FlyBase alignment of dbGSS accession AG216320 to D. melanogaster arm Release_4 and heterochromatin Release_3.2b. Insertion orientation revised.

Synonyms and Secondary IDs (14)
References (22)