Repbase Reports

2008, Volume 8, Issue 12
December 31, 2008
Copyright © 2001-2016 - Genetic Information Research Institute
ISSN# 1534-830X
Page 2243

Polinton-1_SM

Autonomous Polinton from Schmidtea mediterranea - consensus.

Submitted:
31-Dec-2008
Accepted:
31-Dec-2008
Key Words:
Polinton; DNA transposon; Transposable Element; Polinton-1_SM
Source:
Schmidtea mediterranea
Organism:
Schmidtea mediterranea
Taxonomy:
Eukaryota; Metazoa; Platyhelminthes; Turbellaria; Seriata; Tricladida; Paludicola; Dugesiidae; Schmidtea
[1] Authors:
Kapitonov,V.V. and Jurka,J.
Title:
A model Polinton family from the freshwater planarian genome.
Journal:
Repbase Reports 8(12), 2243-2243 (2008)
Abstract:
The planarian genome contains many families of Polintons (several thousand copies). Polinton-1_SM was reconstructed as a consensus sequence built from ~100 copies, which are ~98.5% identical to the consensus. The genome contains several hundred copies of Polinton-1_SM. This transposon is characterized by 6-bp TSDs and canonical TIRs. In additions to the standard ATP, INT, POLB, PX, PY, PW, and PRO proteins present in diverse animal Polintons, numerous families of planarian Polintons code for the TBPpol protein similar (Evalue=1.0e-10) to a TATA-binding TBP transcription factor present in archaea and eukaryotes. TBPs bind promoters and induce transcription. Given that TBPpol is present in diverse families of Polintons, it is important for the transposition of these transposons, probably by regulation of the Polinton transcription. Both order and orientation of all proteins in planarian Polintons are the same as in Polinton-1_SM. Unusual features of Polinton-1_SM: its integrase is encoded by two exons; protease does not contain the methionine at its N-terminus; it contains a 45%-identical copy of PX (PXa-4_SM).
Derived:
[1] (Consensus)
Download Sequence - Format:
IG, EMBL, FASTA
References:

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