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the major model of vesicle fusion holds that actual fusion of a vesicle with its target membrane is driven by the interaction of pairs of proteins called vesicle and target ... select an answer and submit. for keyboard navigation, use the up/down arrow keys to select an answer. a snares. b rab proteins. c cops. d tethers.

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According to the vesicle fusion model, the interaction between protein pairs known as vesicle and target SNAREs causes a vesicle to fuse with its target membrane.

SNAREs (soluble N-ethylmaleimide-sensitive factor attachment protein receptors) are small proteins that are membrane-crossing segments or chains of lipids that are bonded to the surface of the vesicle and the membrane, respectively. Together, the SNARE proteins form a compact bundle of alpha helices that draws the membranes together.

The fusion of a vesicle with a membrane can be powered by as few as two or three of the SNARE complexes.

Therefore, the correct option is option a.

To know more about SNAREs:

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