EsturgeonV1, PubMed, Corpus, bibRecord, 000281

Tana1, a new putatively active Tc1-like transposable element in the genome of sturgeons.

Identifieur interne : 000281 ( PubMed/Corpus ); précédent : 000280; suivant : 000282

Tana1, a new putatively active Tc1-like transposable element in the genome of sturgeons.

Auteurs : José Martin Pujolar ; Laura Astolfi ; Elisa Boscari ; Michele Vidotto ; Federica Barbisan ; Alice Bruson ; Leonardo Congiu

Source :

Molecular phylogenetics and evolution [ 1095-9513 ] ; 2013.

RBID : pubmed:23032571

English descriptors

KwdEn :
- Amino Acid Sequence, Animals, Cloning, Molecular, DNA Transposable Elements (genetics), Evolution, Molecular, Fishes (classification), Fishes (genetics), Gene Dosage, Molecular Sequence Data, Phylogeny, Sequence Analysis, DNA.
MESH :
- chemical , genetics : DNA Transposable Elements.
- classification : Fishes.
- genetics : Fishes.
- Amino Acid Sequence, Animals, Cloning, Molecular, Evolution, Molecular, Gene Dosage, Molecular Sequence Data, Phylogeny, Sequence Analysis, DNA.

Abstract

We report the discovery of a new putatively active Tc1-like transposable element (Tana1) in the genome of sturgeons, an ancient group of fish considered as living fossils. The complete sequence of Tana1 was first characterized in the 454-sequenced transcriptome of the Adriatic sturgeon (Acipenser naccarii) and then isolated from the genome of the same species and from 12 additional sturgeons including three genera of the Acipenseridae (Acipenser, Huso, Scaphirhynchus). The element has a total length of 1588bp and presents inverted repeats of 210bp, one of which partially overlapping the 3' region of the transposase gene. The spacing of the DDE motif within the catalytic domain in Tana1 is unique (DD38E) and indicates that Tana1 can be considered as the first representative of a new Tc1 subfamily. The integrity of the native form (with no premature termination codons within the transposase), the presence of all expected functional domains and its occurrence in the sturgeon transcriptome suggest a current or recent activity of Tana1. The presence of Tana1 in the genome of the 13 sturgeon species in our study points to an ancient origin of the element that existed before the split of the group 170 million years ago. The dissemination of Tana1 across sturgeon genomes could be interpreted by postulating vertical transmission from an ancestral Tana1 with a particularly slow evolutionary rate Horizontal transmission might have also played a role in the dissemination of Tana1 as evidenced by the presence of a complete copy in the genome of Atlantic salmon. Vertical and horizontal transmission are not mutually exclusive and may have concurred in shaping the evolution of Tana1.

DOI: 10.1016/j.ympev.2012.09.025
PubMed: 23032571

Links to Exploration step

pubmed:23032571

Le document en format XML

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<author><name sortKey="Pujolar, Jose Martin" sort="Pujolar, Jose Martin" uniqKey="Pujolar J" first="José Martin" last="Pujolar">José Martin Pujolar</name>
<affiliation><nlm:affiliation>Department of Biology, University of Padova, I-35131 Padova, Italy.</nlm:affiliation>
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<author><name sortKey="Astolfi, Laura" sort="Astolfi, Laura" uniqKey="Astolfi L" first="Laura" last="Astolfi">Laura Astolfi</name>
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<author><name sortKey="Boscari, Elisa" sort="Boscari, Elisa" uniqKey="Boscari E" first="Elisa" last="Boscari">Elisa Boscari</name>
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<author><name sortKey="Vidotto, Michele" sort="Vidotto, Michele" uniqKey="Vidotto M" first="Michele" last="Vidotto">Michele Vidotto</name>
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<author><name sortKey="Barbisan, Federica" sort="Barbisan, Federica" uniqKey="Barbisan F" first="Federica" last="Barbisan">Federica Barbisan</name>
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<author><name sortKey="Bruson, Alice" sort="Bruson, Alice" uniqKey="Bruson A" first="Alice" last="Bruson">Alice Bruson</name>
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<term>Fishes (classification)</term>
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<term>Molecular Sequence Data</term>
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<term>Sequence Analysis, DNA</term>
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<front><div type="abstract" xml:lang="en">We report the discovery of a new putatively active Tc1-like transposable element (Tana1) in the genome of sturgeons, an ancient group of fish considered as living fossils. The complete sequence of Tana1 was first characterized in the 454-sequenced transcriptome of the Adriatic sturgeon (Acipenser naccarii) and then isolated from the genome of the same species and from 12 additional sturgeons including three genera of the Acipenseridae (Acipenser, Huso, Scaphirhynchus). The element has a total length of 1588bp and presents inverted repeats of 210bp, one of which partially overlapping the 3' region of the transposase gene. The spacing of the DDE motif within the catalytic domain in Tana1 is unique (DD38E) and indicates that Tana1 can be considered as the first representative of a new Tc1 subfamily. The integrity of the native form (with no premature termination codons within the transposase), the presence of all expected functional domains and its occurrence in the sturgeon transcriptome suggest a current or recent activity of Tana1. The presence of Tana1 in the genome of the 13 sturgeon species in our study points to an ancient origin of the element that existed before the split of the group 170 million years ago. The dissemination of Tana1 across sturgeon genomes could be interpreted by postulating vertical transmission from an ancestral Tana1 with a particularly slow evolutionary rate Horizontal transmission might have also played a role in the dissemination of Tana1 as evidenced by the presence of a complete copy in the genome of Atlantic salmon. Vertical and horizontal transmission are not mutually exclusive and may have concurred in shaping the evolution of Tana1.</div>
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<Abstract><AbstractText>We report the discovery of a new putatively active Tc1-like transposable element (Tana1) in the genome of sturgeons, an ancient group of fish considered as living fossils. The complete sequence of Tana1 was first characterized in the 454-sequenced transcriptome of the Adriatic sturgeon (Acipenser naccarii) and then isolated from the genome of the same species and from 12 additional sturgeons including three genera of the Acipenseridae (Acipenser, Huso, Scaphirhynchus). The element has a total length of 1588bp and presents inverted repeats of 210bp, one of which partially overlapping the 3' region of the transposase gene. The spacing of the DDE motif within the catalytic domain in Tana1 is unique (DD38E) and indicates that Tana1 can be considered as the first representative of a new Tc1 subfamily. The integrity of the native form (with no premature termination codons within the transposase), the presence of all expected functional domains and its occurrence in the sturgeon transcriptome suggest a current or recent activity of Tana1. The presence of Tana1 in the genome of the 13 sturgeon species in our study points to an ancient origin of the element that existed before the split of the group 170 million years ago. The dissemination of Tana1 across sturgeon genomes could be interpreted by postulating vertical transmission from an ancestral Tana1 with a particularly slow evolutionary rate Horizontal transmission might have also played a role in the dissemination of Tana1 as evidenced by the presence of a complete copy in the genome of Atlantic salmon. Vertical and horizontal transmission are not mutually exclusive and may have concurred in shaping the evolution of Tana1.</AbstractText>
<CopyrightInformation>Copyright © 2012 Elsevier Inc. All rights reserved.</CopyrightInformation>
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Tana1, a new putatively active Tc1-like transposable element in the genome of sturgeons.

Tana1, a new putatively active Tc1-like transposable element in the genome of sturgeons.

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

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