Navegando por Palavras-chave "homology modeling"

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    Modeling the Trypanosoma cruzi Tc85-11 protein and mapping the laminin-binding site
    (Elsevier B.V., 2004-12-10) Marroquin-Quelopana, M.; Oyama, S.; Pertinhez, T. A.; Spisni, A.; Juliano, M. A.; Juliano, L.; Colli, W.; Alves, MJM; Universidade de São Paulo (USP); Lab Nacl Luz Sincrotron; Univ Parma; Universidade Federal de São Paulo (UNIFESP)
    Trypanosoma cruzi expresses a set of glycoproteins encoded by the gp85/trans-sialidase gene superfamily. in this report a structure model is proposed for a cloned member of the superfamily, the Tc85-11 protein. the structure consists of an N-terminus beta-propeller and a C-terminus beta-sandwich interconnected by an alpha-helix, the recombinant protein, corresponding to the N-domain (Tc85-N), binds to laminin in a selective manner. Six synthetic 20-mer peptides from the N-domain adhere onto the surface of LLC-MK2 cells and two of these peptides specifically inhibit the Tc85-N/laminin interaction, indicating that they are the laminin-binding sites of the molecule. Thus, Tc85-11 and other related members of the family appear to be good candidates to play an important role in T cruzi infection via a laminin mediated host-parasite interaction. (C) 2004 Elsevier Inc. All rights reserved.