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EhRabB is an Entamoeba histolytica protein involved in phagocytosis. However, proteins that regulate the EhRabB activity are unknown. Here, we report the identification of a putative G protein-coupled receptor of E. histolytica (EhGPCR-1) that binds to EhRabB. By two-hybrid screening, we found a 372-bp cDNA fragment that encodes the C-terminus of EhGPCR-1. The cloning and sequence of the full-length...
We analyzed the expression and location of EhRabB in clone L-6, a phagocytosis-deficient mutant of Entamoeba histolytica, in comparison with the wild-type clone A. Intriguingly, trophozoites of clone L-6 express more EhRabB than those of clone A. However, the majority of EhRabB-containing vesicles remained in the cytoplasm of clone L-6 during phagocytosis. To investigate molecular alterations in EhRabB...
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