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Syntaxin-5 N-terminal, Sly1p-binding domain Syntaxin-5_N is the Sed5 N-terminal and the N-terminus of Syntaxin-5-like proteins. It is the region of Syntaxin that interacts with Sly1p, a positive regulator of intracellular membrane fusion, allowing SM (cytosolic Sec1/munc18-like) proteins to stay associated with the assembling fusion machinery. This allows the SM proteins to participate in late fusion steps.
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