Protein import into nuclei: association and dissociation reactions involving transport substrate, transport factors, and nucleoporins.

Abstract excerpt

The molecular dynamics of nuclear protein import were examined in a solution binding assay by testing for interactions between a protein containing a nuclear localization signal (NLS), the transport factors karyopherin alpha, karyopherin beta, and Ran, and FXFG or GLFG repeat regions of nucleoporins. We found that karyopherins alpha and beta cooperate to bind FXFG but not GLFG repeat regions. Binding of the NLS...

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