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Kap104p: a karyopherin involved in the nuclear transport of messenger RNA binding proteins.

Science (New York, N.Y.) | Oct 25, 1996

http://www.ncbi.nlm.nih.gov/pubmed/8849456

A cytosolic yeast karyopherin, Kap104p, was isolated and shown to function in the nuclear import of a specific class of proteins. The protein bound directly to repeat-containing nucleoporins and to a cytosolic pool of two nuclear messenger RNA (mRNA) binding proteins, Nab2p and Nab4p. Depletion of Kap104p resulted in a rapid shift of Nab2p from the nucleus to the cytoplasm without affecting the localization of other nuclear proteins tested. This finding suggests that the major function of Kap104p lies in returning mRNA binding proteins to the nucleus after mRNA export.

Pubmed ID: 8849456 RIS Download

Mesh terms: Amino Acid Sequence | Biological Transport | Carrier Proteins | Cell Nucleus | Cytosol | Fungal Proteins | Karyopherins | Membrane Proteins | Molecular Sequence Data | Mutation | Nuclear Envelope | Nuclear Pore Complex Proteins | Nuclear Proteins | Nucleocytoplasmic Transport Proteins | RNA, Messenger | RNA-Binding Proteins | Recombinant Fusion Proteins | Saccharomyces cerevisiae | Saccharomyces cerevisiae Proteins | Temperature | beta Karyopherins

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