Entamoeba histolytica lectins contain unique 6-Cys or 8-Cys chitin-binding domains

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Abstract

The Jacob lectin, the most abundant glycoprotein in the cyst wall of Entamoeba invadens, contains five unique 6-Cys chitin-binding domains (CBDs). We identified Entamoeba histolytica and Entamoeba dispar genes encoding Jacob homologues, each of which contains two predicted 6-Cys CBDs. A unique 8-Cys CBD was found at the N termini of the E. histolytica chitinase and three other predicted lectins, called Jessie 1 to Jessie 3. The CBDs of four E. histolytica lectins (Jacob, chitinase, and Jessies 2 and 3) were expressed in secretory vesicles of transfected amebae and shown to bind to particulate chitin.

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Van Dellen, K., Ghosh, S. K., Robbins, P. W., Loftus, B., & Samuelson, J. (2002). Entamoeba histolytica lectins contain unique 6-Cys or 8-Cys chitin-binding domains. Infection and Immunity, 70(6), 3259–3263. https://doi.org/10.1128/IAI.70.6.3259-3263.2002

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