Expression, refolding and crystallization of the OpcA invasin from Neisseria meningitidis

S. M. Prince, C. Feron, D. Janssens, Y. Lobet, M. Achtman, B. Kusecek, P. A. Bullough, J. P. Derrick

    Research output: Contribution to journalArticlepeer-review

    Abstract

    OpcA is an integral outer membrane from the Gram-negative pathogen Neisseria meningitidis that plays a role in adhesion of meningococci to host cells. The protein was overexpressed in Escherichia coli in an insoluble form and a procedure developed for refolding by rapid dilution from denaturant into detergent solution. The refolded material was identical to native OpcA isolated from meningococci, as judged by overall molecular weight, migration on SDS-PAGE and reaction against monoclonal antibodies. Both native and recombinant OpcA crystallized under similar conditions to give an orthorhombic crystal form (P21212), with unit-cell parameters a = 96.9, b = 46.3, c = 74.0 Å. Complete data sets of reflections were collected from native and refolded OpcA to 2.0 Å resolution.
    Original languageEnglish
    Pages (from-to)1164-1166
    Number of pages2
    JournalActa Crystallographica Section D: Biological Crystallography
    Volume57
    Issue number8
    DOIs
    Publication statusPublished - 2001

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