Crossref journal-article
Rockefeller University Press
The Journal of Cell Biology (291)
Abstract

The 97-kD O-linked glycoprotein, Nup98, is a component of the Xenopus laevis nuclear pore complex and the only vertebrate GLFG nucleoporin identified (Powers, M.A., C. Macauley, F. Masiarz, and D.J. Forbes. 1995. J. Cell Biol. 128:721–736). We have investigated possible roles of xNup98 in the nucleocytoplasmic transport of proteins and RNAs by analyzing the consequences of injecting monospecific polyclonal antibodies to xNup98 into X. laevis oocytes. We show here that nuclear injection of anti-xNup98 inhibited the export of multiple classes of RNAs, including snRNAs, 5S RNA, large ribosomal RNAs, and mRNA. In contrast, the export of tRNA was unaffected. Injection of antixNup98 into the oocyte cytoplasm had no effect on export of any of the RNAs. Significantly, nuclear injection of anti-xNup98 antibodies did not inhibit import of either karyophilic proteins or snRNPs. This latter result is in agreement with our previous finding that Nup98 is not an essential element of the protein import pathway. Thus, Nup98 plays a role specifically in RNA export from the nucleus, and it appears to be an essential component of multiple RNA export pathways.

Bibliography

Powers, M. A., Forbes, D. J., Dahlberg, J. E., & Lund, E. (1997). The Vertebrate GLFG Nucleoporin, Nup98, Is an Essential Component of Multiple RNA Export Pathways. The Journal of Cell Biology, 136(2), 241–250.

Authors 4
  1. Maureen A. Powers (first)
  2. Douglass J. Forbes (additional)
  3. James E. Dahlberg (additional)
  4. Elsebet Lund (additional)
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Dates
Type When
Created 23 years, 1 month ago (July 26, 2002, 12:47 p.m.)
Deposited 2 years, 1 month ago (July 28, 2023, 6:42 p.m.)
Indexed 3 weeks, 6 days ago (Aug. 5, 2025, 8:20 a.m.)
Issued 28 years, 7 months ago (Jan. 27, 1997)
Published 28 years, 7 months ago (Jan. 27, 1997)
Published Online 28 years, 7 months ago (Jan. 27, 1997)
Published Print 28 years, 7 months ago (Jan. 27, 1997)
Funders 0

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@article{Powers_1997, title={The Vertebrate GLFG Nucleoporin, Nup98, Is an Essential Component of Multiple RNA Export Pathways}, volume={136}, ISSN={1540-8140}, url={http://dx.doi.org/10.1083/jcb.136.2.241}, DOI={10.1083/jcb.136.2.241}, number={2}, journal={The Journal of Cell Biology}, publisher={Rockefeller University Press}, author={Powers, Maureen A. and Forbes, Douglass J. and Dahlberg, James E. and Lund, Elsebet}, year={1997}, month=jan, pages={241–250} }