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Description acceptable. This process ends the development of most daughters of V1 through V6 seam cells in C. elegans, which are destined for the cylindrical hyp7 (“hip-7”). This process is studied in goldfish cells expressing RIBEYE, where binding to munc-18 (“munk-18”) helps form mature structures. This process is immediately preceded by GAK and auxilin recruiting Hsc70 (“H-S-C-70”) to remove a structure supported by AP-1 and AP-2. (-5[1])After binding sialic acid, hemagglutinin (-5[1])facilitates (-5[1])this process (-5[1])by (10[1]-5[1])changing conformation. (10[1])The formation of the zero-ionic layer generates mechanical stress that drives this physical process in the “zippering” mechanism. In eukaryotes, (10[2])this process begins with docking (-5[2])and is mediated (-5[1])by endogenous viral F proteins or SNAREs. (10[1]-5[2])For 10 (10[1])points, (10[1])name this (10[1])final step in exocytosis, which forms (-5[1])syncytia (10[1])(“sin-SISH-ee-uh”) when it occurs between cells. (10[2])■END■ (10[4]0[7])

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