Dmel\BS

General Information
Symbol	Dmel\BS	Species	D.melanogaster
Name	BS element	FlyBase ID	FBte0000780
Feature type	natural transposable element	Created / Updated	2006-12-04/2006-12-04
Sequences & Components
Complete element (bp)	5142 (Kaminker et al., 2002)
Terminal repeat (bp)
Reference sequence	transposon_sequence_set.embl.txt.gz
Component genes	BS\gag BS\RTase
Sequence Accessions
	DDBJ/EMBL/GenBank Z83406 Z50470 Z32268 X77571 AY226814 AY226813 AY226812 AY226811 AY226810 AY226809 AY226808 AY060438 AY013921 AW943857 AL008792 AI514969
Sequence Ontology (SO)
Transposon type	non_LTR_retrotransposon (Kaminker et al., 2002, ) transposable_element (Kaminker et al., 2002, )
Insertions & Copy Number
Copy number and comments	29 in euchromatin of Release 3 genome annotation, of which 6 are full length. (Kaminker et al., 2002) 15
Search for	All insertions of this transposon Insertions in the sequenced genome Insertions in other genomes
Target Site Duplication
Size (bp)	8
Orthologs
Curated drosophilid orthologs
Comments
	The BS element is a LINE-like transposable element. It has no terminal repeats, an A-rich sequence at the 3' end of the coding strand and two long open reading frames. The first open reading frame contains motifs characteristic of the gag gene of retroviruses and the second contains motifs characteristic of reverse transcriptase. (Udomkit et al., 1995) First described as a sequence inserted within the gypsy element associated with the ac^Hw-1 mutation. It was reported to have inverted terminal repeats of 2.5 kb, but according to the annotation of EMBL AC X77571 this is not so. The sequence of the internal domain is well conserved in the genome (Livingstone and Finnegan). Restriction map in Lindsley, Zimm (1992) p. 1098.
Other Information
Etymology

External Crossreferences
Sequence Crossreferences
	DDBJ/EMBL/GenBank Z83406 Z50470 Z32268 X77571 AY226814 AY226813 AY226812 AY226811 AY226810 AY226809 AY226808 AY060438 AY013921 AW943857 AL008792 AI514969
Other Crossreferences

Synonyms & Secondary IDs ( 5 )
Reported As
Symbol Synonym	38B.20 (McGill Drosophila Genome Project, 2001.9.25, Butler, 2001, Butler et al., 2001) BcDNA:LD46618 BS (Saito et al., 2006, Gunawardane et al., 2007, Brennecke et al., 2007) CG13971 (Butler, 2001, )
Name Synonym	BS element
Secondary FlyBase IDs
	FBgn0046766 FBgn0032852 FBgn0000224 FBtp0011416
References ( 28 )

Generate a list of	All references relating to this natural transposable element ( 28 )

List References by type	Research paper ( 19 ) Supplementary material ( 2 ) Personal communication to FlyBase ( 1 ) Abstract ( 1 ) FlyBase analysis ( 2 ) Computer file ( 3 )
Recent research papers ( 2 )
	Brennecke et al., 2007, Cell 128(6): 1089--1103 Discrete small RNA-generating loci as master regulators of transposon activity in Drosophila. [FBrf0200494] Saito et al., 2006, Genes Dev. 20(16): 2214--2222 Specific association of Piwi with rasiRNAs derived from retrotransposon and heterochromatic regions in the Drosophila genome. [FBrf0191820] Show all research papers ...