A model of the Plasmodium flagellum and proteins comprising it. (A) A cross section of a typical axoneme is shown (as observed in Plasmodium and other eukaryotic species). Proteins that were present in the male gametocyte (MGY) or male gamete (MG) proteomes are shown and their sequence count is given. It is noteworthy that the sequence counts originate from different datasets from distinct experimental set-ups ; they are thus indicative of presence of these proteins in the two datasets but are not meant as quantitative information on protein abundance in these cells types. Typical components of an axoneme are clearly identified. (B) Longitudinal section of an axoneme and basal body and the proteins identified in the male proteomes that are putatively associated with these structures. (C) Proteins that were identified in the male gamete proteomic analysis but that could not be attributed to a specific compartment of the flagellum, these proteins possess bio-informatic prediction that suggests they could play a role in flagellar biology. CPP = conserved Plasmodium protein.