Purity ~95% (SDS-PAGE). NAPA is one of the SNAP (Soluble NSF Attachment Protein) family. SNAPs, acting in concert with SNAREs (SNAP receptors) and the N-ethylmaleimide-sensitive fusion protein (NSF), are required for the fusion of transport vesicles to their target membranes in synaptic transmission, intra-Golgi transport, endosome-to-endosome fusion and transcytotic vesicles-to-plasma membrane transport. This protein mediates the binding of NSF and thus the formation of a 20S fusion particle. It is expressed in all mammalian tissues. Source: Recombinant protein corresponding to aa1-295 of human NAPA, fused to His-tag at N-ternminal expressed in E. coli. Molecular Weight: ~35.3kD AA