Kinetic analysis of translocation through nuclear pore complexes
نویسندگان
چکیده
منابع مشابه
Kinetic analysis of translocation through nuclear pore complexes.
The mechanism of facilitated translocation through nuclear pore complexes (NPCs) is only poorly understood. Here, we present a kinetic analysis of the process using various model substrates. We find that the translocation capacity of NPCs is unexpectedly high, with a single NPC allowing a mass flow of nearly 100 MDa/s and rates in the order of 10(3) translocation events per second. Our data fur...
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Nuclear pore complexes (NPCs) mediate bidirectional transport of proteins, RNAs, and ribonucleoprotein complexes across the double-membrane nuclear envelope. In vitro studies with purified transport cofactors have revealed a general scheme of cofactor-dependent transport energetically driven by the G protein Ran. However, the size and complexity of NPCs have made it difficult to clearly define ...
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BACKGROUND Nuclear pore complexes (NPCs) mediate bidirectional transport of proteins, RNAs, and ribonucleoproteins across the double-membrane nuclear envelope. Although there are many studies that look at the traffic in the nucleus and through the nuclear envelope we propose a method to detect the nucleocytoplasmic transport kinetics in an unperturbed cell, with no requirement for specific labe...
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What do they look like? A picture is worth twice the length of this article (Figure 1). All eukaryotes have these impressive structures: vertebrates have the Cadillac model (~125 MDa) and yeast a sportier version (~50 MDa). In spite of their immense size, these structures are made of a relatively small number of proteins — about 30 — the so-called nucleoporins or nups. Defining an NPC ‘interact...
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ژورنال
عنوان ژورنال: The EMBO Journal
سال: 2001
ISSN: 0261-4189,1460-2075
DOI: 10.1093/emboj/20.6.1320