FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Natural Transposon: Dmel\gtwin
Open Close
General Information
Symbol
gtwin
Species
D. melanogaster
Feature type
natural_transposable_element
FlyBase ID
FBte0001062
Sequences and Components
Complete element (bp)

7411

(Kaminker et al., 2002)
Terminal repeat (bp)
Reference sequence
transposon_sequence_set.fa.gz   transposon_sequence_set.gff.gz
Component genes
Sequence Accessions
GenBank Nucleotide - A collection of sequences from several sources, including GenBank, RefSeq, TPA, and PDB.
Sequence Ontology (SO)
Insertions and Copy Number
Copy number and comments

6 in euchromatin of Release 3 genome annotation, of which 2 are full length.

(Kaminker et al., 2002)
Search for
Target Site Duplication
Size (bp)

4

(Linheiro and Bergman, 2012)
Orthologs
Curated drosophilid orthologs
Comments

"gtwin" is short for "gypsy-twin", the name given to this transposon to reflect its similarity to the gypsy transposon (FBte0000021). Nevertheless, many people consider "gypsy" to be a pejorative term. "mdg4-twin" is the most appropriate synonym to use for this transposon if one wishes to avoid "gtwin". Transposon names incorporating "gypsy" have been retained by FlyBase as efforts are made to change the transposon family name across all eukaryotes.

(FlyBoard ad hoc nomenclature committee, 2024.7.14)

Expression is enriched in embryonic gonads.

(Shigenobu et al., 2006)
Other Information
Etymology
External Crossreferences and Linkouts ( 2 )
Crossreferences
GenBank Nucleotide - A collection of sequences from several sources, including GenBank, RefSeq, TPA, and PDB.
Synonyms and Secondary IDs (9)
Reported As
Symbol Synonym
BEST:GH08762
GH08762
(Furlong et al., 2001)
GTWIN
(Rigal et al., 2022, Brower-Toland et al., 2009, Lau et al., 2009)
GTWIN_I
(Gerland et al., 2017, Gunawardane et al., 2007)
Gtwin
(Alizada et al., 2025, Bence et al., 2024, Sytnikova et al., 2014, Darricarrère et al., 2013, Kapitonov and Jurka, 2003)
gt win
(Kawamura et al., 2008)
gtwin
(Varoqui et al., 2025, FlyBoard ad hoc nomenclature committee, 2024.7.14, Mohamed et al., 2023, Wierzbicki et al., 2023, de Oliveira et al., 2021, Huang et al., 2021, Fort-Aznar et al., 2020, Barckmann et al., 2018, Zhang et al., 2018, Nefedova and Kim, 2017, Ku et al., 2016, Ozawa et al., 2016, Peng et al., 2016, Wang et al., 2016, Kofler et al., 2015, Senti et al., 2015, Zhang et al., 2015, Basquin et al., 2014, Patil et al., 2014, Czech et al., 2013, Darricarrère et al., 2013, Muerdter et al., 2013, Ohtani et al., 2013, Rozhkov et al., 2013, Vagin et al., 2013, Kofler et al., 2012, Linheiro and Bergman, 2012, Sienski et al., 2012, Liu et al., 2011, Nefedova et al., 2011, Pane et al., 2011, Salenko et al., 2011, Zamparini et al., 2011, Stefanov et al., 2010, Deloger et al., 2009, Li et al., 2009, Malone et al., 2009, Stefanov et al., 2009, Brennecke et al., 2008, Mugnier et al., 2008, Brennecke et al., 2007, Kotnova et al., 2007, Ludwig and Loreto, 2007, Stefanov et al., 2007, Ganko et al., 2006, Kotnova et al., 2006, Shigenobu et al., 2006, Glukhov et al., 2004, FlyBase, 1992-)
gypsy twin
hamilton
(Bowen and McDonald, 2001)
Secondary FlyBase IDs
  • FBgn0047356
  • FBgn0063436
  • FBtp0017058
References (67)