FB2026_03 , released September 17, 2026
Recombinant Construct: P{Hsp23-lacZ.1.8}
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General Information
Symbol
P{Hsp23-lacZ.1.8}
FlyBase ID
FBtp0056190
Feature type
transgenic_transposable_element
Component Allele(s)
Ecol\lacZHsp23.1.8
Size
Expression Data
lacZ reporter
Associated insertion(s)
1 available
Molecular map
Description and Uses
Construct components
Component allele Ecol\lacZHsp23.1.8
Transgenic product class
Component
Use(s)
Encoded product / tool
lacZ
Description

A 1.8kb fragment from the Hsp23 promoter region is fused upstream of lacZ.

(Michaud and Tanguay, 2003)
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
Stage
Tissue/Position (including subcellular localization)
Reference
embryonic stage 11
neuroblast MP2
(Michaud and Tanguay, 2003)
chordotonal organ precursor cell
(Michaud and Tanguay, 2003)
embryonic stage 11 -- 13
amnioserosa
(Michaud and Tanguay, 2003)
embryonic stage 13
chordotonal neuron | subset
(Michaud and Tanguay, 2003)
larval VUM neuron
(Michaud and Tanguay, 2003)
dMP2 neuron
(Michaud and Tanguay, 2003)
vMP2 neuron
(Michaud and Tanguay, 2003)
embryonic stage 13 -- 16
midline glial cell
(Michaud and Tanguay, 2003)
Additional Information
Statement
Reference

At embryonic stage 11, EcollacZHsp23.1.8 transcript is expressed in MP2 neuroblasts, one laterally localized chordotonal organ precursor per hemisegment, and in the amnioserosa.By stage 13, EcollacZHsp23.1.8 transcript is expressed in one laterally localized chordotonal neuron per abdominal hemisegment, and one dorsally localized chordotonal neuron in the second and third thoracic segments. It is also expressed in the dMP2, vMP2 and VUM neurons.. Expression in midline glial cells begins during stage 13, and expression becomes restricted to midline glial cells by late embryonic stages.

(Michaud and Tanguay, 2003)
 
Marker for
Reflects expression of
Hsp23
(Michaud and Tanguay, 2003)
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 (3)
Reported As
Symbol Synonym
P{Hsp23-lacZ.1.8}
(FlyBase, 1992-)
hsp23(1.8)-LacZ
(Michaud and Tanguay, 2003)
pCaβM23-1.8
(Michaud and Tanguay, 2003)
Secondary FlyBase IDs
    References (3)