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PMID: 9071012 Published · ppublish English Journal Article

The 3' ends of tRNA-derived SINEs originated from the 3' ends of LINEs: a new example from the bovine genome.

Journal of molecular evolution ·Vol. 44 Suppl 1 ·1997-00-00 ·Pages S52-6

Okada N, Hamada M

Abstract

Our group demonstrated recently that the 3' ends of several families of tRNA-derived SINEs (short interspersed repetitive elements) originated from the 3' ends of LINEs (long interspersed repetitive elements) [Ohshima et al. (1996) Mol. Cell. Biol. 16:3756-3764]. Two fully characterized examples of such organization were provided by the tortoise Pol III/SINE and the salmonid HpaI family of SINEs, and two probable examples were provided by the tobacco TS family of SINEs and the salmon SmaI family of SINEs. This organization of SINEs can explain their potential to retropose in the genome since it appears reasonable that the sites for recognition of LINEs by reverse transcriptase should be located within the 3'-end sequences of LINEs. We now add another example to this category of SINEs. In the bovine genome, there are Bov-tA SINEs, which belong to the superfamily of tRNA-derived families of SINEs, and Bov-B LINEs, which were recently demonstrated to belong to a LINE family. Moreover, Bov-tA and Bov-B share the same 3'-end tail. We propose a possible scenario whereby the composite structure of the bovine Bov-tA family of SINEs might have been generated from the Bov-B family of LINEs during evolution.

MeSH Terms
Animals Base Sequence Cattle Evolution, Molecular Genome Molecular Sequence Data RNA, Transfer/genetics Repetitive Sequences, Nucleic Acid/genetics Sequence Alignment
Chemicals
RNA, Transfer
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Okada N
Faculty of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan. [email protected]
Hamada M
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Article Info
Journal
Journal of molecular evolution
Abbr.
J Mol Evol
ISSN
0022-2844
DOI
10.1007/pl00000058
Email
[email protected]
Published
1997-00-00
Pages
S52-6
Language
English
Region
Germany
NLM ID
0360051
Subset
IM
Databases
GENBANK
UNKNOWN
External Links
PubMed source DOI: 10.1007/pl00000058 View journal details
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