FB2026_03 , released September 17, 2026
Recombinant Construct: P{2xBLE1+}
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General Information
Symbol
P{2xBLE1+}
FlyBase ID
FBtp0003199
Feature type
transgenic_transposable_element
Component Allele(s)
bcdΔ21.2BLE1.LZ
Size
Expression Data
Associated insertion(s)
1 available
Molecular map
Description and Uses
Construct components
Component allele bcdΔ21.2BLE1.LZ
Transgenic product class
Component
Use(s)
Regulatory region(s)
bcd
Encoded product / tool
bcd
Description

Two tandem copies of the BLE1 element are fused to bcd sequences.

(Macdonald et al., 1995)

As for bcdΔ21.LZ i.e. a deletion of bases 4056-4726 (coordinates of FBrf0047926) in bcd 3' UTR, with addition of a 1.3kb Ecol\lacZ gene fragment to aid detection in in situ hybridizations, and with addition of two copies of that sequence deleted in bcdΔ14, the BLE.

(MacDonald et al., 1993)
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
oogenesis stage S5 -- S6
oocyte | anterior
(MacDonald et al., 1993)
Additional Information
Statement
Reference

During early stages ofoogenesis the bcdΔ21.2BLE1.T:EcollacZ transcript is localized similarlyto wild type bcd, however, as oocyte development proceeds the transcriptdiffuses throughout the oocyte.

(MacDonald et al., 1993)
 
Marker for
Reflects expression of
bcd
(MacDonald et al., 1993)
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 (1)
Reported As
Symbol Synonym
P{2xBLE1+}
(FlyBase, 1996-)
Secondary FlyBase IDs
    References (4)