Reverse transcriptase-like activity in the mobile element L1 tc

Authors

  • C.L GONZÁLEZ
  • M.C. THOMAS
  • F. MARTÍN
  • M.C. López

Keywords:

Trypanosoma cruzi, Polimerasa ARN-dependiente, Homopolímeros ARN., Inhibidores RT.

Abstract

By using synthetic homopolyrners and specific inhibitors the presence of a RT-Iike activity was revealed to be present in Trypanosoma cruzi, the parasite responsible for the Chagas' disease. We show, moreover, that this parasite has in its genome a non-LTR type mobile element, denominated L1Tc, and that the recombinant protein obtained from translation of the ORF2 of this element exhibits retrotranscriptase activity. The presence of a RT-líke activity in the nuclear fraction of the parasite, the fact that the L1Tc element was isolated as a cDNA and that the ORF2 derived protein has RT-like activity strongly suggest that L1Tc may well be responsible for the detected nuclear RT-like activity and that it functions as an active mobile element for retrotransposition.

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References

HUTeHINSON, e . A, HARDIES, S. e., LOEB, D. D., SHEHEE, W. R., EDGELL, W. H : In mobile DNA (1989), 593-617. (Berg, D. E. & Howe, M. M., eds). Am Soc Microbiol, Washington, De, USA.
BURTON, F. H., LOEB, D. D., VOLIVA, e. F., MARTÍN, S. L., EDGELL, M. H., HUTeHINSON, e . A.: J Mol Biol (1986), 187:291-304.
MARTÍN, F., MARAÑÓN, e ., OLIVARES, M., ALONSO, e ., LÓPEZ, M. e .: J Mol Biol (1995), 247:49-50.
XIONG, Y., EIeKBUSH, T. H. : The EMBO J (1990), 9(10):3353-3362.
WEINER, A. M., DEININGER, P. L., EFISTRATIADIS, A. : Annu Rev Biochem (1986), 55:631-661.
BOER, P. H., ADRA, C. N., LAU, Y. F., MeBURNEY, M. W.: Mol Cel! Biol (1987), 7:3107-3113 .
HARENDZA, e . J., JOHNSON, F. L.: Proc Natl Acad Sci USA (1990),87:2531-2535.
KAZAZIAN, H. H. IR., WONG, e., YOUSSOUFIAN, H., SeOTT, A. F., PHILLIPS, D. G., ANTONARAKIS, S. E.: Nature (1988), 332:164-166.
MORSE, B., ROTHERG, P. G., SOUTH, V. J., SPANDORFER, J. M., ASTRIN, S. M.: Nature.(1988). 333:87-90.
BRATTHAUER, G. L., FANNING, T. G.: Cancer (1993), 71:2383-2386.
BRATTHAUER, G. L., FANNING, T. G.: Oncogene (1992), 7:507-510.
KATZ, R. A , SKALKA, A M.: Annu Rev Biochem (1994), 63:133-173 .
DOOLITTLE, R.: Science (1981), 214:149-159.
GONZÁLEZ, e. Y., THOMAS, M. e., MARTÍN, F., ALeAMI, J., ALONSO, e ., LÓPEZ, M. e .: Acta Tropica (1997), en prensa.
GERARD, G. F., ROTTMAN, F., GREEN, M.: Biochemistry (1974), 13:1632-1640.
REARDON, J. E., MILLER, W. H. J. : Biol Chem (1990), 265:20302-20307.
IVANOV, V.A., MELNIKOV, A. A., SIUNOV, A. V., FODOR, Y. Y., ILYIN, Y. V.: The EMBO J (1991), 10:2489-2495.
GABRIEL, A., BOEKE, J. D.: Reverse Transcriptase (1993), 275-327 . eold Spring Harbor Laboratory Press.

Published

1997-03-20

How to Cite

1.
GONZÁLEZ C, THOMAS M, MARTÍN F, López M. Reverse transcriptase-like activity in the mobile element L1 tc . Ars Pharm [Internet]. 1997 Mar. 20 [cited 2024 May 19];38(2-3):221-7. Available from: https://revistaseug.ugr.es/index.php/ars/article/view/21150

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Original Articles