A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Dmel\Bari1

General Information
Symbol Dmel\Bari1 Species D.melanogaster
Name Bari1 element FlyBase ID FBte0000034
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
and comments
5 in euchromatin of Release 3 genome annotation, of which all are full length.
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Target Site Duplication
Size (bp)
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Curated drosophilid orthologs
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At least two separate clusters of Bari1 repeats exist in the h39 region.
Bari1 elements are unstable in Charolles stock. Instability is persistent over 53 generations and appears to affect recurrent insertion sites.
rl undergoes polytenization in salivary gland chromosomes to a degree comparable to that of euchromatic genes, despite its deep heterochromatic location. Bari1 sequences located to the left are severely underrepresented and thus appear to be α-heterochromatin.
By comparing methylation by Ecol\dam methylase between euchromatic and heterochromatic genes it was determined that the heterochromatic state does not prevent methylase accessibility in vivo.
Bari1 is widespread in the genus Drosophila.
The distribution of transposable elements within heterochromatin indicates that they are major structural components of the heterochromatin.
The 1.7kb Bari1 element makes up a middle repetitive DNA family that shows many characteristics in common with transposable elements, though its mobility has not yet been demonstrated. Most copies are homogeneously clustered with a unique location close to the centromere of the second chromosome, and all copies have the same open reading frame.
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hide Synonyms & Secondary IDs ( 11 )
Reported As
Symbol Synonym
Bari1-Jheh
Name Synonym
Bari1 element
 
Secondary FlyBase IDs
  • FBgn0005773
  • FBtp0011412
hide References ( 67 )
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hide Recent research papers ( 4 )
Olivieri et al., 2012, Mol. Cell 47(6): 954--969
The Cochaperone Shutdown Defines a Group of Biogenesis Factors Essential for All piRNA Populations in Drosophila. [FBrf0219572]
Pane et al., 2011, EMBO J. 30(22): 4601--4615
The Cutoff protein regulates piRNA cluster expression and piRNA production in the Drosophila germline. [FBrf0217070]
Petrov et al., 2011, Mol. Biol. Evol. 28(5): 1633--1644
Population genomics of transposable elements in Drosophila melanogaster. [FBrf0214125]
Wang and Elgin, 2011, Proc. Natl. Acad. Sci. U.S.A. 108(52): 21164--21169
Drosophila Piwi functions downstream of piRNA production mediating a chromatin-based transposon silencing mechanism in female germ line. [FBrf0217081]
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