|Name||gypsy element||FlyBase ID||FBte0000475|
|Feature type||natural transposable element|
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|Sequences & Components|
|Complete element (bp)|
|Terminal repeat (bp)|
|Sequence Ontology (SO)|
|Insertions & Copy Number|
|Target Site Duplication|
|Curated drosophilid orthologs|
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.
The nucleotide sequence of Dsub\gypsy is determined. A comparative analysis of the sequence and molecular structures of Dsub\gypsy, Dvir\gypsy and gypsy reveals gypsy is the only infectious particle, the other two have lost the ability.
Dsub\gypsy, Dvir\gypsy and gypsy show many structural similarities including sequences necessary for transcription and regulatory and coding sequences which suggest a common mechanism of expression. The ORF3 of Dsub\gypsy and Dvir\gypsy lack some motifs essential for the function of the "env-like" protein.
Comparisons between gypsy sequences in D.melanogaster, D.subobscura and D.virilis strongly suggest that gypsy sequences have been horizontally transferred between these species.
gypsy and Dvir\gypsy virus-like particles (VLP) are present in the cultured media from D.melanogaster and D.virilis.
|Synonyms & Secondary IDs ( 9 )|
|Secondary FlyBase IDs|
|References ( 22 )|
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|Recent research papers ( 1 )|
|Recent reviews (0)|
|All reviews listed in FlyBase were published before 2011|