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General Information
D. melanogaster
FlyBase ID
Also Known As
sd-lacZ, sd-LacZETX4
Inserted Element

lacZ reporter

Affected gene(s)
Viability / fertility
Associated allele(s)
Stock availability
Genomic Location
Chromosomal Location
Sequence Location
Target / Docking site
Member of Large Scale Dataset(s)
Detailed Mapping Data
Chromosome (arm)
Sequence Location
Cytological location (computed by FlyBase)
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
No Assay Recorded
Tissue/Position (including subcellular localization)
distribution deduced from reporter
Tissue/Position (including subcellular localization)
dorsal medial indirect flight muscle

Comment: reference states 21 hr APF

myoblast | subset

Comment: myoblasts surrounding dorsal medial muscle; reference states 21 hr APF

Additional Information

Reporter expression is observed in some muscle cells at embryonic stage 13 including cardial cells and in almost all cardial cells in the heart region of the dorsal vessel and in some cardial cells in the aorta region in stage 16 embryos. It is also expressed in the hindgut.

Enhancer trap expression is first observed in embryos at stage 9 in cephalic neuroblasts. Expression continues weakly in the CNS throughout embryogenesis and includes sheath cells. Expression in the PNS is first observed at stage 11. By stage 14, intense staining is seen in ventral and lateral sense organs along the trunk and in the antennomaxillary complex. During head involution, intense staining is observed in the antennomaxillary complex and in the labral sense organs. In larvae, staining is observed in a restricted set of cells in the optic proliferation centers, the cerebral hemispheres and the ventral ganglion. The cells are probably not neuroblasts and may be glia or sheath cells. Enhancer trap staining is observed in all of the imaginal discs except the labial disc. Staining in the wing disc occurs in regions that will give rise to the adult wing blade, the scutellum, and the mesopleura. In the eye disc, staining is turned on immediately behind the morphogenetic furrow. In adults, enhancer trap expression is observed in discrete regions of the adult brain including cell bodies in the suboesophageal ganglion, nuclei lying medial to the antennal neuropile and within the lobular plate, cell bodies in the calyx of the mushroom bodies and cell bodies in the protocerebrum. Staining is also observed in the proboscis in two cells per sensillum that are thought to be the sheath cell and the glial cell. The sacculus and a subset of cells in the olfactory sensilla are stained as well as photoreceptor cells and restricted cells in the ventral ganglion. Finally, staining is observed in the jump muscle and in hairs located all over the adult cuticle.

Marker for
Reporter construct used in assay
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 ( 0 )
Synonyms and Secondary IDs (7)
Reported As
Name Synonyms
Secondary FlyBase IDs
  • FBti0009219
References (32)