Repbase Reports |
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| 2008, Volume 8, Issue 12 |
| December 31, 2008 |
| Copyright © 2001-2016 - Genetic Information Research Institute |
| ISSN# 1534-830X |
| Page 2243 |
Polinton-1_SM |
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Autonomous Polinton from Schmidtea mediterranea - consensus. |
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Submitted: 31-Dec-2008 |
Accepted: 31-Dec-2008 |
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Key Words: Polinton; DNA transposon; Transposable Element; Polinton-1_SM |
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Source: Schmidtea mediterranea |
Organism: Schmidtea mediterranea |
Taxonomy: Eukaryota; Metazoa; Platyhelminthes; Turbellaria; Seriata; Tricladida; Paludicola; Dugesiidae; Schmidtea |
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| [1] |
Authors: Kapitonov,V.V. and Jurka,J. |
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Title: A model Polinton family from the freshwater planarian genome. |
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Journal: Repbase Reports 8(12), 2243-2243 (2008) |
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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).
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Derived: [1] (Consensus) |
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Download Sequence - Format: IG, EMBL, FASTA |
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References: |
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