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1999 | 46 | 4 |
Tytuł artykułu

Fragments of LINE-1 retrotransposons flanked by inverted telomeric repeats are present in the bovine genome. Homology with human LINE-1 elements

Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In the bovine genome we found two intrachromosomal DNA fragments flanked by inverted telomeric repeats (GenBank Accession Nos. AF136741 and AF136742). The internal parts of the fragments are homologous exclusively to the human sequences and to the consensus sequence of the L1MC4 subfamily of LINE-1 retrotransposons which are widespread among mammalian genomes. We found that distribution of homologous human sequences within our fragments is not random, reflecting a complicated pattern of insertion mechanisms of and maintenance of retrotransposons in mammalian genomes. One of the possible explanations of the origin of LINE-1 truncated elements flanked by inverted telomeric repeats in the bovine genome is that extrachromosomal DNA fragments may be modified by telomerase and subsequently, transferred into chromosomal DNA.
Wydawca
-
Rocznik
Tom
46
Numer
4
Opis fizyczny
p.873-878,fig.
Twórcy
  • Institute of Biotechnology and Antibiotics, Staroscinska 5, 02-516 Warsaw, Poland
Bibliografia
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  • 3. Bryan, T.M., Englezou, A., Gupta, J., Bacchetii, S. & Reddel, L.L. (1995) Telomere elongation in immortal human cells without detectable telomerase activity. EMBO J. 14, 4240-4248.
  • 4. Lundblad, V. & Wright, W.E. (1996) Telo­meres and telomerase: A simple picture be­comes complex. Cell 87, 369-375.
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  • 7. Dombroski, B.A., Scott, A.F. & Kazazian, H.H., Jr. (1993) Two additional potential retrotransposons isolated from the human LI subfamily that contains an active retro- transposable element. Proc. Natl. Acad. ScL U.S.A. 90, 6513-6517.
  • 8. Sassaman, D.M., Dombroski, B.A., Moran, J.V., Kimberland, M.L., Naas, T.P., DeBerar- dinis, R.J., Gabriel, A., Swergold, G.D. & Kazazian, H.H., Jr. (1997) Many human Ll el­ements are capable of retro transposition. Na­ture Genet. 16, 37-43.
  • 9. Goffeau, A., Barrel!, B.G., Bussey, H., Davis, R.W., Dujon, B., Feldmann, H., Galibert, F., Hoheisel, J.D., Jacq, C., Johnston, M., Louis, E.J., Mewes, H.W., Murakami, Y., Philippsen, P., Tettelin, H. & Oliver, S.G. (1996) Life with 6000 genes. Science 274, 546-567.
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  • 11. Clark, J.M. (1988) Novel non-templated nucle­otide addition reactions catalysed by pro- caryotic and eucaryotic DNA polymerases. Nu­cleic Acids Res. 16, 9677-9686.
  • 12. Sanger, F., Nicklen, S. & Coulson, A.R. (1977) DNA sequencing with chain-terminating inhib­itors. Proc. Natl. Acad. Sci. U.S.A. 74, 5463-5467.
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  • 14. Jurka, J., Klonowski, P., Dagman, V. & Pelton, P. (1996) CENSOR - a program for identifica­tion and elimination of repetitive elements from DNA sequences. Computers and Chemis­try 20, 119-122.
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-article-f19db305-cdd4-4b1d-8dd1-cec84e4794ec
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