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1992: Bubert A; Kuhn M; Goebel W; Köhler S
Structural and functional properties of the p60 proteins from different Listeria species.
Journal of bacteriology 1992;174(24):8166-71.
The major extracellular protein p60 of Listeria monocytogenes seems to be required for this microorganism's adherence to and invasion of 3T6 mouse fibroblasts but not for adherence to human epithelial Caco-2 cells. Western blot analysis with polyclonal antibodies against p60 of L. monocytogenes indicated the presence of cross-reacting proteins in the culture supernatants of all Listeria species. Protein p60 of L. monocytogenes could restore adhesion of the L. monocytogenes mutant RIII (impaired in the synthesis of p60) to mouse fibroblasts more efficiently than that of Listeria grayi. The amino acid sequences of the p60-related proteins of L. innocua, L. ivanovii, L. seeligeri, L. welshimeri, and L. grayi indicated highly conserved regions of about 120 amino acids at both the N-terminal and the C-terminal ends. The middle portions of these proteins, consisting of about 240 amino acids, varied considerably. These parts include the repeat domain consisting of repetitions of Thr (T) and Asn (N) which was present only, albeit in different arrangements, in the p60 proteins of L. monocytogenes and L. innocua. The p60-related proteins of L. grayi, L. ivanovii, L. seeligeri, and L. welshimeri each contained an insertion of 54 amino acids which was absent in the p60 proteins of L. monocytogenes and L. innocua.

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