Repbase Reports

2007, Volume 7, Issue 11
November 30, 2007
Copyright © 2001-2016 - Genetic Information Research Institute
ISSN# 1534-830X
Page 1179

Helitron-1N1_DR

A family of non-autonomous Helitrons - a consensus sequence.

Submitted:
30-Nov-2007
Accepted:
30-Nov-2007
Key Words:
Helitron; DNA transposon; Transposable Element; Nonautonomous; Helitron-1_DR; Helitron-1N1_DR
Source:
Danio rerio
Organism:
Danio rerio
Taxonomy:
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Cypriniformes; Cyprinidae; Danio
[2] Authors:
Kapitonov,V.V. and Jurka,J.
Title:
RPA70-encoding Helitrons in zebrafish.
Journal:
Repbase Reports 7(11), 1179-1179 (2007)
Abstract:
Helitron-1N1_DR is a nonautonomous deletion derivate of Helitron-1_DR; that was transposed by the Helitron-1_DR-encoded proteins. The genome contains several hundred copies of Helitrons. Many of them form clusters composed of 2-20 tandemly repeated elements (du to the rolling-circle replication). These elements, like most of Helitrons, are inserted into 5'-A|T-3' target sites without their duplications. They are frequently inserted into (TAA)n microsatellites. The 3' terminal region (pos. 975-987) is complementary to the 5' terminal region (pos. 23-35). Probably, this complementarity induces formation of a circular DNA structure important during the rolling-circle replication. The standard 3' short palindrome is at pos. 955-972. There is also a short 12-bp palindrome at pos. 6-17. Numerous copies of Helitrons-1N1_ZF are <3% divergent from the consensus. Therefore, transposition of this family has occured quite recently.
Derived:
[2] (Consensus)
Download Sequence - Format:
IG, EMBL, FASTA
References:
  1. Kapitonov,V.V. and Jurka,J.
    Helitrons on a roll: eukaryotic rolling-circle transposons.
    Trends Genet 23(10), 522-529 (2007)

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