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    Generation of cell-free extracts of Xenopus eggs and demembranated sperm chromatin for the assembly and isolation of in vitro-formed nuclei for Western blotting and scanning electron microscopy (SEM).

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    Authors
    Allen, Terence D
    Rutherford, Sandra A
    Murray, Stephen M
    Sanderson, Helen S
    Gardiner, Fiona
    Kiseleva, Elena
    Goldberg, Martin W
    Drummond, Sheona P
    Affiliation
    Paterson Institute for Cancer Research, University of Manchester, Wilmslow Road, Withington, Manchester M20 4BX, UK. tallen@picr.man.ac.uk
    Issue Date
    2007
    
    Metadata
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    Abstract
    This protocol details methods for the generation of cell-free extracts and DNA templates from the eggs and sperm chromatin, respectively, of the clawed toad Xenopus laevis. We have used this system with scanning electron microscopy (SEM), as detailed herein, to analyze the biochemical requirements and structural pathways for the biogenesis of eukaryotic nuclear envelopes (NEs) and nuclear pore complexes (NPCs). This protocol requires access to female frogs, which are induced to lay eggs, and a male frog, which is killed for preparation of the sperm chromatin. Egg extracts should be prepared in 1 d and can be stored for many months at -80 degrees C. Demembranated sperm chromatin should take only approximately 2-3 h to prepare and can be stored at -80 degrees C almost indefinitely. The time required for assembly of structurally and functionally competent nuclei in vitro depends largely on the quality of the cell-free extracts and, therefore, must be determined for each extract preparation.
    Citation
    Generation of cell-free extracts of Xenopus eggs and demembranated sperm chromatin for the assembly and isolation of in vitro-formed nuclei for Western blotting and scanning electron microscopy (SEM). 2007, 2 (5):1173-9 Nat Protoc
    Journal
    Nature Protocols
    URI
    http://hdl.handle.net/10541/71362
    DOI
    10.1038/nprot.2007.138
    PubMed ID
    17546012
    Type
    Article
    Language
    en
    ISSN
    1750-2799
    ae974a485f413a2113503eed53cd6c53
    10.1038/nprot.2007.138
    Scopus Count
    Collections
    All Paterson Institute for Cancer Research

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