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Methods Cell Biol
2014 Jan 01;122:165-91. doi: 10.1016/B978-0-12-417160-2.00008-4.
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Analysis of nuclear reconstitution, nuclear envelope assembly, and nuclear pore assembly using Xenopus in vitro assays.
Bernis C
,
Forbes DJ
.
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The large and complex eukaryotic nucleus is the arbiter of DNA replication, RNA transcription, splicing, and ribosome assembly. With the advent of in vitro nuclear reconstitution extracts derived from Xenopus eggs in the 1980s, it became possible to assemble multiple nuclei in vitro around added DNA or chromatin substrates. Such reconstituted nuclei contain a nuclear lamina, double nuclear membranes, nuclear pores, and are competent for DNA replication and nuclear import. In vitro nuclear reconstitution has allowed the assembly of "wild-type" and "biochemically mutant" nuclei in which the impact of individual components can be assessed. Here, we describe protocols for preparation of the nuclear reconstitution extract, nuclear reconstitution in vitro, assessment of nuclear membrane integrity, and a more specialized assay for nuclear pore assembly into preformed pore-free nuclear intermediates.
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