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Classical nuclear localization signals: definition, function, and interaction with importin alpha.


ABSTRACT: The best understood system for the transport of macromolecules between the cytoplasm and the nucleus is the classical nuclear import pathway. In this pathway, a protein containing a classical basic nuclear localization signal (NLS) is imported by a heterodimeric import receptor consisting of the beta-karyopherin importin beta, which mediates interactions with the nuclear pore complex, and the adaptor protein importin alpha, which directly binds the classical NLS. Here we review recent studies that have advanced our understanding of this pathway and also take a bioinformatics approach to analyze the likely prevalence of this system in vivo. Finally, we describe how a predicted NLS within a protein of interest can be confirmed experimentally to be functionally important.

SUBMITTER: Lange A 

PROVIDER: S-EPMC4502416 | biostudies-literature | 2007 Feb

REPOSITORIES: biostudies-literature

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Classical nuclear localization signals: definition, function, and interaction with importin alpha.

Lange Allison A   Mills Ryan E RE   Lange Christopher J CJ   Stewart Murray M   Devine Scott E SE   Corbett Anita H AH  

The Journal of biological chemistry 20061214 8


The best understood system for the transport of macromolecules between the cytoplasm and the nucleus is the classical nuclear import pathway. In this pathway, a protein containing a classical basic nuclear localization signal (NLS) is imported by a heterodimeric import receptor consisting of the beta-karyopherin importin beta, which mediates interactions with the nuclear pore complex, and the adaptor protein importin alpha, which directly binds the classical NLS. Here we review recent studies th  ...[more]

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