FB2026_02 , released June 18, 2026
Recombinant Construct: P{EYFP-fest}
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General Information
Symbol
P{EYFP-fest}
FlyBase ID
FBtp0110801
Feature type
transgenic_transposable_element
Component Allele(s)
festEYFP
Also Known As
eYFP-Fest
Size
Expression Data
Associated insertion(s)
1 available
Molecular map
Description and Uses
Construct components
Component allele festEYFP
Transgenic product class
wild_type
(Baker et al., 2015)
Component
Use(s)
Regulatory region(s)
fest
Encoded product / tool
fest
Tagged with
EYFP
Description

fest tagged at the N-terminal end with EYFP is expressed under the control of its own promoter (590bp of sequence from immediately 5' of the annotated transcription start site). fest 5' UTR and 3' genomic sequences are also present (the 3'genomic sequence consists of 1255bp that includes the 3'UTR).

(Baker et al., 2015)
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 or direct label
Stage
Tissue/Position (including subcellular localization)
Reference
adult stage | male
testis
(Baker et al., 2015)
primary spermatocyte
(Baker et al., 2015)
mature primary spermatocyte
(Baker et al., 2015)
polar primary spermatocyte
(Baker et al., 2015)
Additional Information
Statement
Reference

fest protein is expressed starting in early spermatocytes and continuing into later stages of germ cell differentiation. Reporter protein is detectable in mature spermatocytes and later stages. The expression pattern is similar to that of Rbp4.

(Baker et al., 2015)
 
Marker for
Reflects expression of
fest
(Baker et al., 2015)
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{EYFP-fest}
(FlyBase, 1992-)
eYFP-Fest
(Baker et al., 2023, Baker et al., 2015)
Secondary FlyBase IDs
    References (4)