The synaptosomal-associated protein (SNAP-25) is an essential component of the core complex that mediates presynaptic vesicle trafficking. Thus, SNAP-25 is directly involved in the release of neurotransmitters and this protein exists as two alternative isoforms, SNAP25A and SNAP25B which differ by 9 amino acids in central portion of these proteins. Recombinant SNAP25B protein was expressed in E.coli and purified by using conventional chromatography techniques. Synonyms: FLJ23079, SNAP25, RIC-4, RIC4, SEC9, SNAP, SNAP-25, Synaptosomal-associated protein 25 isoform SNAP25B, Synaptosomal-associated protein 25 isoform SNAP25B SUP, Super protein, bA416N4.2, Bdr, dJ1068F16.2, HGNC:11132, MGC105414, MGC139754, Resistance to inhibitors of cholinesterase 4 homolog, RIC 4, SEC9, SNAP 25, SNAP-25B, SNP 25, SNP25, sp, Synaptosomal associated 25 kDa protein, Synaptosomal associated protein, Synaptosomal associated protein 25, Synaptosomal associated protein 25kDa. NCBI no.: NP_570824