A Database of Drosophila Genes & Genomes

FB2008_07, released August 8, 2008
 

Dmel\INE-1

General Information
Symbol Dmel\INE-1 Species D.melanogaster
Name Interspersed element 1 FlyBase ID FBte0000312
Feature type natural transposable element Created / Updated 2006-12-04/2006-12-04
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Complete element (bp)
Terminal repeat (bp)
Reference sequence transposon_sequence_set.embl.txt.gz
Component genes
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Target Site Duplication
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Curated drosophilid orthologs
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"mini-me" elements from separate species show an overall lack of sequence identity but have a number of shared features. Perfect inverted repeats are conserved at both termini of the "mini-me" elements. At the 5' end, the inverted repeat is partially duplicated, forming a complementary palindrome. The 3' inverted repeat is located at a slightly preterminal position. A core 33bp motif that begins approximately 110bp from the 5' end of the element is also conserved, having approximately 80% sequence identity across all copies of the "mini-me" element analysed. A (TA)n-producing proto-microsatellite is present upstream of the 33bp core region and a (GTCY)n-producing proto-microsatellite is present downstream of the 33bp core region. The region between the (GTCY)n proto-microsatellite and the 3' subterminal inverted repeat is not conserved between species and can be extremely variable between copies of "mini-me" elements within a species. INE-1 elements account for approximately 1.2% of the D.melanogaster genome. INE-1 elements are 3 times more abundant on chromosome 4 as in the genome as a whole.
INE-1 has a suggested role in the heterochromatic nature of chromosome 4.
The "Dr. D" repetitive sequence (described in FBrf0048918) contains sequences of both INE-1 and 1360 transposable elements.
A repeated sequence mostly found on chromosome 4.
INE-1 elements are distributed throughout the banded region of chromosome 4, at the base of the major chromosome arms, at several telomeres and within the chromocentre.
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hide Synonyms & Secondary IDs ( 20 )
Reported As
Symbol Synonym
Ars4
 
ars312
 
INE
 
INE-1
Interspersed element 1
mini-me
Narep1/Dine1
Name Synonym
Drosophila Interspersed element 1
 
Interspersed element 1
 
Interspersed repeat element
microsatellite initiating mobile element
Secondary FlyBase IDs
  • FBgn0026556
  • FBgn0000126
  • FBgn0026416
  • FBtp0019255
hide References ( 27 )
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hide Recent research papers ( 3 )
Brennecke et al., 2007, Cell 128(6): 1089--1103
Discrete small RNA-generating loci as master regulators of transposon activity in Drosophila. [FBrf0200494]
Smith, 2007, Science 316(5831): 1586--1591
[FBrf0202564]
Yang et al., 2006, Genetics 173(1): 189--196
Genomewide comparative analysis of the highly abundant transposable element DINE-1 suggests a recent transpositional burst in Drosophila yakuba. [FBrf0192902]
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