FB2026_02 , released June 18, 2026
Natural Transposon: Dvir\Helena
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General Information
Symbol
Dvir\Helena
Species
D. virilis
Feature type
FlyBase ID
FBte0000017
Sequences and Components
Complete element (bp)
Terminal repeat (bp)
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
Target Site Duplication
Size (bp)
Orthologs
Comments

The pattern of indel formation for Helena in the D.melanogaster and D.virilis groups is very similar, suggesting a high rate of DNA loss is common in Drosophila.

'Dead on arrival' copies of Dvir\Helena (transposition of Dvir\Helena generates 5' truncated copies) accumulate deletions at an unexpected high rate.

A non-LTR retrotransposable element.

Dvir\Helena is a LINE-like element. Progeny from a dysgenic cross between females of strain B9 and males of strain L160 show mobilisation of at least four different transposable elements at similar frequencies.

Other Information
Etymology
External Crossreferences and Linkouts ( 5 )
Crossreferences
GenBank Nucleotide - A collection of sequences from several sources, including GenBank, RefSeq, TPA, and PDB.
Synonyms and Secondary IDs (3)
Reported As
Symbol Synonym
Dvir\Helena
Helena element
Secondary FlyBase IDs
  • FBtp0011474
  • FBgn0011601
References (20)