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  • Title: Separation of nuclear protein complexes by blue native polyacrylamide gel electrophoresis.
    Author: Nováková Z, Man P, Novák P, Hozák P, Hodný Z.
    Journal: Electrophoresis; 2006 Apr; 27(7):1277-87. PubMed ID: 16502463.
    Abstract:
    The nucleus is a highly structured organelle with distinct compartmentalization of specific functions. To understand the functions of these nuclear compartments, detailed description of protein complexes which form these structures is of crucial importance. We explored therefore the potential of blue native PAGE (BN-PAGE) method for the separation of nuclear protein complexes. We focused on (i) solubility and stability of nuclear complexes under conditions prerequisite for the separation by BN-PAGE, (ii) improved separation of native nuclear protein complexes using 2-D colorless native/blue native PAGE (CN-/BN-PAGE), and (iii) mass spectrometric analysis of protein complexes which were isolated directly from native 1-D or from 2-D CN/BN-PAGE gels. The suitability of BN-PAGE for nuclear proteomic research is demonstrated by the successful separation of polymerase I and polymerase II complexes, and by mass spectrometric determination of U1 small nuclear ribonucleoprotein particle composition. Moreover, practical advice for sample preparation is provided.
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