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SNAP47 belongs to the SVAP1 family. It contains two t-SNARE coiled-coil homology domains. SNAP47 has ubiquitous tissue distribution, with particularly high levels in nervous tissue. In neurons, SNAP 47 has been shown to have widespread distribution on intracellular membranes and is enriched in synaptic vesicle fractions. In vitro, SNAP 47 can substitute for SNAP-25 in SNARE complex formation, but not as efficiently.