FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Natural Transposon: Dmel\297
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General Information
Symbol
297
Species
D. melanogaster
Feature type
natural_transposable_element
FlyBase ID
FBte0000675
Sequences and Components
Complete element (bp)

6995

(Kaminker et al., 2002)
Terminal repeat (bp)

415

Reference sequence
transposon_sequence_set.fa.gz   transposon_sequence_set.gff.gz
Component genes
297\pol
297\gag
297\env
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

Approximately 30 (FBrf0032823)

57 in euchromatin of Release 3 genome annotation, of which 18 are full length.

(Kaminker et al., 2002)

TE copies retrieved from release 5.1 of the D. melanogaster genome.:77

(Lerat et al., 2011)
Search for
Target Site Duplication
Size (bp)

4

(Linheiro and Bergman, 2012)
Orthologs
Curated drosophilid orthologs
Dmau\297
(Biemont and Cizeron, 1999)
Dsim\297
Comments

Expression is enriched in embryonic gonads.

(Shigenobu et al., 2006)

Used in an investigation to address the relationship between retrotransposons and retroviruses and the coadaptation of these retroelements to their host genomes. Results indicate retrotransposons are heterogeneous in contrast to retroviruses, suggesting different modes of evolution by slippage-like mechanisms.

(Terzian et al., 1997)

Study of TE distribution (P-element, hobo, I-element, copia, mdg1, mdg3, 412, 297 and roo) along chromosome arms shows no global tendency for the TE site occupancy frequency to negatively follow the recombination rate, except for the 3L arm. The tendency for TE insertion number to increase from base to tip of some chromosome arms is simply explicable by a positive relationship with DNA content along the chromosomes. So for all TEs, except hobo, there is no relationship between distribution of TE insertion numbers weighted by DNA content and recombination rate. hobo insertion site number is positively correlated with recombination rate.

(Hoogland and Biemont, 1996)

The distribution of a number of transposable elements has been studied in 10 Harwich mutation accumulation lines.

(Nuzhdin and Mackay, 1995)

The chromosomal distribution of a number of retrotransposons in an isolated population of D.melanogaster (from Ishigaki Island, Okinawa, Japan) has been determined.

(Suh et al., 1995)

Estimating the genomic numbers of transposable elements demonstrates many families of element are over-represented in heterochromatin.

(Charlesworth et al., 1994)

The spatial and temporal expression patterns of fifteen families of retrotransposons are analysed during embryogenesis and are found to be conserved. Results suggest that all families carry cis-acting elements that control their spatial and temporal expression patterns.

(Ding and Lipshitz, 1994)

Rates of transposition and excision of the 297 element have been determined.

(Nuzhdin and Mackay, 1994)

Element copy numbers on inversion and standard chromosomes has been determined. The copy number is significantly higher within low frequency inversions than within the corresponding standard chromosome regions.

(Sniegowski and Charlesworth, 1994)

Distribution of 9 families of transposable elements in a natural population was studied and the hypothesis that transposable element abundance is regulated primarily by deleterious fitness consequences of ectopic meiotic exchange was supported. Proximal euchromatin may only infrequently undergo exchange, and elements detected in population surveys of this kind tend to be inserted into sites where there is negligible effect on fitness.

(Charlesworth et al., 1992)

One substock of inbred lines shows considerable heterogeneity of insertion sites of copia (frequency of insertions is 12% per haploid genome per generation) whereas mdg1, 412, mdg3, gypsy, 297 and HMS-Beagle were stable in all stocks examined.

(Pasyukova and Nuzhdin, 1992)

Stability of 11 transposable element families compared by Southern blotting among individuals of lines that had been subjected to 30 generations of sister sib matings. 412, roo, blood, 297, 1731 and G-element all appear stable, whereas copia, hobo, I-element, gypsy and jockey elements show instability.

(di Franco et al., 1992)

297 elements were first described by Potter et al. (FBrf0032823) but were originally identified by Wensink and Rubin as being complementary to abundant polyA RNA in tissue-culture cells.

Other Information
Etymology
External Crossreferences and Linkouts ( 14 )
Crossreferences
GenBank Nucleotide - A collection of sequences from several sources, including GenBank, RefSeq, TPA, and PDB.
Synonyms and Secondary IDs (11)
Reported As
Symbol Synonym
297
(Alizada et al., 2025, Schneider et al., 2023, Wierzbicki et al., 2023, Han et al., 2022, Rigal et al., 2022, Eastwood et al., 2021, Fabry et al., 2021, Huang et al., 2021, Onishi et al., 2020, Rech et al., 2019, Zhao et al., 2019, Théron et al., 2018, van den Beek et al., 2018, Nefedova and Kim, 2017, Iwasaki et al., 2016, Kofler et al., 2015, Matsumoto et al., 2015, Molla-Herman et al., 2015, Rahman et al., 2015, Sato et al., 2015, Senti et al., 2015, Minakhina et al., 2014, Mirkovic-Hösle and Förstemann, 2014, Patil et al., 2014, Satyaki et al., 2014, Sytnikova et al., 2014, Cridland et al., 2013, Czech et al., 2013, Dönertas et al., 2013, Muerdter et al., 2013, Ohtani et al., 2013, Thomae et al., 2013, Vagin et al., 2013, Kofler et al., 2012, Linheiro and Bergman, 2012, Sienski et al., 2012, Lerat et al., 2011, Nefedova et al., 2011, Pane et al., 2011, Petrov et al., 2011, Wang and Elgin, 2011, Díaz-González et al., 2010, Lu and Clark, 2010, Nayak et al., 2010, Berry et al., 2009, Deloger et al., 2009, Hamilton et al., 2009, Hartig et al., 2009, Henikoff et al., 2009, Klattenhoff et al., 2009, Li et al., 2009, Lipardi and Paterson, 2009, Malone et al., 2009, Brennecke et al., 2008, Chung et al., 2008, Ghildiyal et al., 2008, González et al., 2008, Kawamura et al., 2008, Matyunina et al., 2008, Mugnier et al., 2008, Brennecke et al., 2007, Nefedova and Kim, 2007, Smith et al., 2007, Alonso-Gonzalez et al., 2006, Bergman et al., 2006, Ganko et al., 2006, Saito et al., 2006, Shigenobu et al., 2006, Lipatov et al., 2005, Maside et al., 2005, Mito et al., 2005, Franchini et al., 2004, Alonso-Gonzalez et al., 2003, Dimitri et al., 2003)
297 element
(Khurana et al., 2011)
297 virus
(Terzian et al., 2001)
BarA
(FlyBase, 1996-, Norris et al., 1992)
BcDNA:SD08734
DM297
(Rincon-Arano et al., 2012, Makunin and Yurlova, 2010, Makunin and Yurlova, 2010, Zhou et al., 2009, Czech et al., 2008)
DM297_I5
(Stoffel et al., 2020)
Dm297
(FlyBase, 1996-, Leibovich, 1990)
Dme297V
(Pelisson et al., 2002, Terzian et al., 2001)
EG:EG0007.2
T1/T2
(FlyBase, 1996-, Higashijima et al., 1992, Higashijima et al., 1992)
Secondary FlyBase IDs
  • FBgn0061365
  • FBgn0000005
  • FBtp0011407
References (185)