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General Information
D. melanogaster
Feature type
FlyBase ID
Sequences and Components
Complete element (bp)
Terminal repeat (bp)
Sequence Accessions
Sequence Ontology (SO)
Insertions and Copy Number
Copy number and comments

1 in euchromatin of Release 3 genome annotation.

Target Site Duplication
Size (bp)

HeT-A and TART-element, previously considered to be closely related, have very different transcriptional characteristics. Additionally, features of TART-element sequence organisation resemble those of a subclass of non-LTR elements characterized by unequal terminal repeats. The distinctive transcription patterns of HeT-A and TART-element are conserved in D.yakuba.

Comparison of integrase/transposase domains to new elements containing the DDE signature.

HeT-A element and TART-element may be evolutionarily related to telomerase, in both cases an enzyme extends the end of a chromosome by adding DNA copied from an RNA template.

TART-element encodes two proteins that have significant sequence homology to LINE-like retrotransposons. TART-elements preferentially transpose to broken chromosome ends as part of the essential process of maintaining telomeres.

A transposon family of non-long terminal repeat retrotransposons found at the telomere. Evidence suggests that they can transpose to natural chromosome ends.

construct_comment: Associated with telomeres.

TART-element may play a role in maintaining telomeres.

Other Information
External Crossreferences and Linkouts ( 20 )
Synonyms and Secondary IDs (15)
Reported As
Symbol Synonym
(Eastwood et al., 2021, Kalashnikova et al., 2021, McGurk et al., 2021, Cacchione et al., 2020, Cavaliere et al., 2020, Kordyukova et al., 2020, Lepesant et al., 2020, Saint-Leandre et al., 2020, Saint-Leandre et al., 2020, Chang et al., 2019, Saint-Leandre et al., 2019, Théron et al., 2018, Casacuberta, 2017, Chen et al., 2016, Guida et al., 2016, Lefebvre et al., 2016, Levine et al., 2016, Dufourt et al., 2014, Ott et al., 2014, Satyaki et al., 2014, Sytnikova et al., 2014, Czech et al., 2013, Dönertas et al., 2013, Le Thomas et al., 2013, Rozhkov et al., 2013, Anand and Kai, 2012, Pek et al., 2012, Preall et al., 2012, Shpiz et al., 2011, Zhang et al., 2011, Moshkovich and Lei, 2010, Patil and Kai, 2010, Rozhkov et al., 2010, Malone et al., 2009, Navarro et al., 2009, Shpiz et al., 2009, Zhou et al., 2009, Brennecke et al., 2008, Kalmykova et al., 2008, Maxwell et al., 2008, Brennecke et al., 2007, Gunawardane et al., 2007, Lim and Kai, 2007, Shpiz et al., 2007, Villasante et al., 2007, Yin and Lin, 2007, George et al., 2006, Maxwell et al., 2006, Saito et al., 2006, Savitsky et al., 2006, Slawson et al., 2006, Biessmann et al., 2005, De Lucia et al., 2005, Louis and Vershinin, 2005, Raffa et al., 2005, Fedic et al., 2004, Biessmann and Mason, 2003, Cenci et al., 2003, Mason et al., 2003, Nardon et al., 2003, Perrod and Gasser, 2003, Rashkova et al., 2003, Celniker et al., 2002, Kaminker et al., 2002, Maxwell et al., 2002, Savitsky et al., 2002, Yan et al., 2002, Pardue et al., 2001, Berezikov et al., 2000, Cenci et al., 2000, Georgiev et al., 2000, Konev et al., 2000, Pardue, 2000, Agudo et al., 1999, Dimitri and Junakovic, 1999, Abdulla, 1997, Biessmann and Mason, 1997, Kidwell and Lisch, 1997, Labrador and Corces, 1997, Boeke, 1996, FlyBase, 1996-, Tolar et al., 1995, Anonymous, 1994, Biessmann and Mason, 1994)
TART-B2 transposon putative reverse
Telomere Associated Sequence
Telomere-associated retrotransposon
Secondary FlyBase IDs
  • FBgn0013398
  • FBgn0004904
  • FBtp0011466
References (169)