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General Information
Symbol
Tirant
Species
D. melanogaster
Feature type
natural_transposable_element
FlyBase ID
FBte0000179
Sequences and Components
Terminal repeat (bp)
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

20 in euchromatin of Release 3 genome annotation, of which 15 are full length.

Approximately 11

TE copies retrieved from release 5.1 of the D. melanogaster genome.:24

Target Site Duplication
Orthologs
Comments

Polytene chromosome in situ hybrizations indicate an average of 11 Tirant insertion sites in the Dmel euchromatic genome, with no major difference between populations. However, 19 copies of Tirant are found in the sequenced Dmel genome, 15 of which are full-length.

Expression is enriched in embryonic gonads.

Most Tirant elements in the D.melanogaster genome are defective, non-autonomous elements. Defective elements lacking the Tirant\gag ORF but retaining the Tirant\env ORF are abundant in heterochromatin.

DNA sequence characterisation of the Tirant element, the sequence provides evidence that the element contains env-related sequences. Tirant may be a retrotransposable element of the gypsy-like family.

Tirant is a moderately repeated mobile sequence. Partial sequencing of Tirant ends suggests it is a retrotransposon, since it is flanked by two LTRs. Tirant sequences are present in species from the melanogaster and obscura groups. Data suggests that ancestral sequences of Tirant appeared after the Sophophora radiation and before the divergence of these groups.

Chromosome in situ and sequence analysis of Tirant suggests that it is a retrotransposon. In 28 species of Drosophila, Tirant sequences have only been detected in species from the melanogaster and obscura groups, suggesting that the ancestral Tirant sequence appeared after the Sophophera radiation and before the divergence of the melanogaster and obscura groups.

A middle repetitive element first described in the context of emcD (FBrf0051368). Tirant can be regarded as a typical retrotransposon.

Tirant is a moderately repetitive DNA element.

Other Information
Etymology

Etymology: element is named "Tirant" (pronounced "teran", phonetic accent on the a) after the legendary medieval Catalonian knight.

External Crossreferences and Linkouts ( 9 )
Crossreferences
GenBank Nucleotide - A collection of sequences from several sources, including GenBank, RefSeq, TPA, and PDB.
Synonyms and Secondary IDs (9)
References (71)