Technical Data
Munc-18, phosphorylated (Ser515) (Mammalian Homolog of Unc-18, Munc18, hUNC18, Munc18-1, Munc18a, N-Sec1, p67, Rbsec1, Syntaxin Binding Protein 1, STXBP1, UNC18, UNC-18, Unc18 Homolog, Unc-18 Homolog, Unc 18-1, Unc-18-1, Unc18A, Unc-18A)
Munc-18 (mammalian homologue of Unc-18) is a protein that is thought to be involved in regulating exocytosis due, at least in part to its ability to bind syntaxin (Ciufo et al., 2005). Munc18-1 is a neuron-specific member of the Sec1/Munc18 protein family that binds to syntaxin1A and is thought to stabilize the complex (Liu et al., 2004). The function of Munc-18 is thought to be regulated by PKC phosphorylation of Ser515 on the Munc-18 protein (Sassa et al., 1996).

Positive Control: Rat cortex lysate

Suitable for use in Western Blot. Other applications not tested.

Recommended Dilution:
Optimal dilutions to be determined by the researcher.

Storage and Stability:
May be stored at 4C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot Store at -20C. Aliquots are stable for at least 12 months at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
PabAffinity Purified
100ul-20CBlue IceHumanRabbit
Not determined
Phosphopeptide corresponding to amino acid residues surrounding the phospho- Ser515 of Munc-18. Prepared from rabbit serum by affinity purification via sequential chromatography on phospho- and dephosphopeptide affinity columns.
Purified by immunoaffinity chromatography.
10 mM Hepes (pH7.5), 150 mM NaCl, 100 ug/ml BSA and 50% glycerol
The antibody has been directly tested for reactivity in Western blots with rat tissue. It is anticipated that the antibody will react with bovine, canine, chicken, human, mouse, non-human primates and Xenopus based on the fact that these species have 100% homology with the amino acid sequence used as antigen. Specific for the ~65k Munc-18 protein phosphorylated at Ser515. Immunolabeling is blocked by the phosphopeptide used as antigen but not by the corresponding dephosphopeptide.
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.
Ciufo LF, Barclay JW, Burgoyne RD, Morgan A (2005) Munc18-1 regulates early and late stages of exocytosis via syntaxin-independent protein interactions. Mol Biol Cell 16:470-482.Liu J, Ernst SA, Gladycheva SE, Lee YY, Lentz SI, Ho CS, Li Q, Stuenkel EL (2004) Fluorescence resonance energy transfer reports properties of syntaxin1a interaction with Munc18-1 in vivo. J Biol Chem 279:55924-55936.Sassa T, Ogawa H, Kimoto M, Hosono R (1996) The synaptic protein UNC-18 is phosphorylated by protein kinase C. Neurochem Int 29:543-552.