Four recombinant proteins, MA28–P1004LEH6, ME135–H328LEH6, MW329–H622LEH6 and MH835–P1004LEH6, were prepared based on the genomic sequence of IgA1 protease from Neisseria meningitidis serogroup B strain H44/76. The immunogenic and protective properties of these proteins were studied in a mouse model. The predicted T- and B-epitopes located in the N-terminal part of amino acid sequence of this enzyme are very important for the formation of effective protection against meningococci of the three main epidemic serogroups A, B, and C. The small-sized recombinant protein having the sequence ME135–H328LEH6 (molecular weight 23367 Da) appears to be as protective against meningococci of the tested serogroups as the high molecular MA28–P1004LEH6 (molecular weight 109019 Da), the latter being a large-sized analog of full-length IgA1 protease. These proteins can be promising candidates for a polyvalent meningococcal vaccine.
Russian Journal of Bioorganic Chemistry – Springer Journals
Published: Mar 14, 2018
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