- Catalog number
- PA1315
- Size / count
- 100 µg/Vial
- Dry ice
- No
- Hazardous
- No
- Discontinued
- No
- Background
- Synaptosome-associated protein of 25,000 daltons also known as SNAP-25 is a protein which in humans encodes a 25-kD protein of 206 amino acids. It was first investigated as a neuron-specific gene preferentially expressed in mouse hippocampus. The tSNARE (the target-membrane soluble NSF-attachment protein receptor, where NSF is N-ethylmaleimide-sensitive fusion protein) synaptosomal-associated protein of 25 kDa (SNAP-25) is expressed in pancreatic B-cells and its cleavage by botulinum neurotoxin E (BoNT/E) abolishes stimulated secretion of insulin. In the nervous system, two SNAP-25 isoforms (a and b) have been described, which are produced by alternative splicing. Nagy et al. (2004) identified mammalian Snap25a and Snap25b as targets of protein kinase A, a key regulator of neurosecretion that primes slowly releasable pools and readily releasable pools of secretory vesicles. SNAP-25 inhibits P/Q- and L-type voltage-gated calcium channels located presynaptically and interacts with the synaptotagmin C2B domain in Ca2+-independent fashion. In glutamatergic synapses SNAP-25 decreases the Ca2+ responsiveness, while it is naturally absent in GABAergic synapses.
- Synonyms
- Synaptosomal-associated protein 25; SNAP-25; Super protein; SUP; Synaptosomal-associated 25 kDa protein; SNAP25; SNAP
- Gene Name
- SNAP25
- Gene ID
- 6616
- UniProt
- P60880
- Host
- Rabbit
- Reactivity
- Rat, Mouse, Human
- Cross Reactivity
- No cross-reactivity with other proteins
- Immunogen
- A synthetic peptide corresponding to a sequence at the C-terminus of human SNAP25, identical to the related rat and mouse sequences.
- Clonality
- Polyclonal
- Tissue Specificity
- Neurons of the neocortex, hippocampus, piriform cortex, anterior thalamic nuclei, pontine nuclei, and granule cells of the cerebellum.
- Applications
- IHC, WB
- Field of Research
- Cancer, Cancer Metabolism, Cell Type Marker, Energy Transfer Pathways, Integration Of Energy, Integration Of Energy Metabolism, Metabolic Signaling Pathway, Metabolic Signaling Pathways, Metabolism, Neuron Marker, Neuroscience, Neurotransmission, Pathways and Processes, Protein Trafficking, Secretory Vesicles, Signal Transduction, Synapse Marker, Vesicle Transport
- Purification
- Immunogen affinity purified.
- Concentration
- Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.
- Form
- Lyophilized
- Reconstitution
- Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
- Function
- T-SNARE involved in the molecular regulation of neurotransmitter release. May play an important role in the synaptic function of specific neuronal systems. Associates with proteins involved in vesicle docking and membrane fusion. Regulates plasma membrane recycling through its interaction with CENPF. Modulates the gating characteristics of the delayed rectifier voltage-dependent potassium channel KCNB1 in pancreatic beta cells. .
- References & Citations
- 1. Gonelle-Gispert, C.; Halban, P. A.; Niemann, H.; Palmer, M.; Catsicas, S.; Sadoul, K. : SNAP-25a and -25b isoforms are both expressed in insulin-secreting cells and can function in insulin secretion. Biochem. J. 339: 159-165, 1999. 2. Nagy, G.; Reim, K.; Matti, U.; Brose, N.; Binz, T.; Rettig, J.; Neher, E.; Sorensen, J. B. : Regulation of releasable vesicle pool sizes by protein kinase A-dependent phosphorylation of SNAP-25. Neuron 41: 417-429, 2004. 3. Hodel A (1998) . SNAP-25. The International Journal of Biochemistry & Cell Biology 30 (10) : 1069–1073. 4. Chapman ER (2002) . Synaptotagmin: A Ca2+ sensor that triggers exocytosis?. Nature Reviews Molecular Cell Biology 3: 498–508. 5. Pozzi D, Verderio C, Patti L, Grumelli C, Inverardi F, Frassoni C, Bonanno G, Matteoli M (2004) . SNAP-25 modulation of calcium dynamics underlies differences in GABAergic and glutamatergic responsiveness to depolarization. Neuron 41 (4) : 599–610.
- Storage Conditions
- Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.
- Calculated Molecular Weight
- 23315 MW
- Observed Molecular Weight
- 40-50 kDa, 80-140 kDa
- Specificity
- No cross reactivity with other proteins.
- Gene Name Synonym
- Synaptosomal-associated protein 25
- Subcellular Location
- Cytoplasm, perinuclear region . Cell membrane ; Lipid-anchor. Cell junction, synapse, synaptosome. Membrane association requires palmitoylation. Expressed throughout cytoplasm, concentrating at the perinuclear region. Colocalizes with KCNB1 at the cell membrane (By similarity) . .
- Sequence Similarities
- Belongs to the SNAP-25 family.
- Protein Name
- Synaptosomal-associated protein 25 (SNAP-25)
- Isotype
- Rabbit IgG
- Contents
- Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 0.05mg NaN3.
