A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Spal\P-element

General Information
Symbol Spal\P-element Species S.pallida
Name FlyBase ID FBte0001093
Feature type natural transposable element
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Description
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FB2013_03
FB2013_02
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Complete element (bp)
Terminal repeat (bp)
Reference sequence transposon_sequence_set.embl.txt.gz
Component genes
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Transposon type
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Copy number
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Target Site Duplication
Size (bp)
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Curated drosophilid orthologs
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A phylogenetic survey has identified four major P-element subfamilies in the saltans and willistoni species groups of Drosophila.
PCR screening for O-type P elements in the relatives of D.bifasciata reveal that they only occur in the sibling species D.imaii. An extremely close relative appears in S.pallida, from where horizontal transmission into D.bifasciata/D.imaii probably occurred.
P-element sequences from nine Dipteran species, including S.pallida, have been compared. The P-element phylogeny contradicts the phylogeny of the species, suggesting that horizontal transfer of P-elements may have occurred.
A number of Spal\P-elements have been cloned and sequenced from four independent stocks of S.pallida. These stocks each contain approximately 15 Spal\P-elements, including 3 to 4 full-length elements as well as shorter, deleted elements. All elements are divergent from one another, and appear to be immobile (since they are located at identical positions within the genome of independent stocks). This suggests that Spal\P-elements are old components of the S.pallida genome. Spal\P-elements are usually associated with repeated sequences, and are usually located in pericentromeric heterochromatin.
Spal\P-elements have been cloned and sequenced. The Spal\P-element is approximately 3kb long, has 31bp terminal inverted repeats and is flanked by an 8bp target site duplication.
Isolated from a S.pallida genomic library, using D.melanogaster P-element DNA as a probe.
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hide Synonyms & Secondary IDs ( 2 )
Reported As
Symbol Synonym
P element
Spal\P-element
 
Name Synonym
Secondary FlyBase IDs
  • FBgn0013338
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