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  • M2694 - Anti-Munc-18-1 antibody produced in rabbit

M2694 Sigma-Aldrich

Anti-Munc-18-1 antibody produced in rabbit

IgG fraction of antiserum, buffered aqueous solution

Synonym: Anti-Syntaxin-binding protein 1, Anti-Munc-18α, Anti-STXBP1, Anti-rb-Sec-1



Related Categories Alphabetical Index, Antibodies, Antibodies for Neurobiology, Antibodies to Synaptic Proteins, MUE-MZ,
conjugate   unconjugated
clone   polyclonal
biological source   rabbit
application(s)   indirect immunofluorescence: 1:250-1:500 using mouse fibroblast NIH3T3 cell line
  microarray: suitable
  western blot: 1:2,000-1:4,000 using rat brain extract (S1 fraction) and PC12 whole cell extract.
species reactivity   rat, mouse
mol wt   antigen 67 kDa
form   buffered aqueous solution
shipped in   dry ice
storage temp.   −20°C
antibody form   IgG fraction of antiserum
Quality Level   200
antibody product type   primary antibodies
UniProt accession no.   O08599
Gene Information   human ... STXBP1(6812)
mouse ... Stxbp1(20910)
rat ... Stxbp1(25558)


General description

Munc-18-1 (67 kDa) is an abundant neuronal protein that tightly binds to the synaptic fusion protein syntaxin. It is primarily expressed in neuronal tissues. Both Munc-18-1 and 2 isoforms bind tightly to syntaxins 1A, 2, and 3.


synthetic peptide corresponding to amino acids 577-594 located at the C-terminus of rat Munc-18-1 conjugated to KLH. This sequence is identical in mouse, chicken, bovine, and human Munc-18-1. It does not share homology with the Munc-18-2 and Munc-18-3 isoforms.


Anti-Munc-18-1 antibody produced in rabbit has been used in immunoblotting and immunofluorescence.

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Biochem/physiol Actions

Munc-18-1 functions in synaptic vesicle exocytosis. It modulates neurotransmission by associating with syntaxin 1. Munc-18-1 binds to both syntaxin 1A and 1B isoforms, inhibiting the binding of t-soluble N-ethylmaleimide-sensitive factor-attached protein receptor (SNARE) synaptobrevin/vesicle-associated membrane protein (VAMP) and SNAP25 to syntaxin 1 and preventing SNARE assembly. Munc-18 is required for neurotransmitter secretion from synaptic vesicles throughout development and has been implicated in axonal branching in hippocampal neurons.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy


Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detection methods, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

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Peer-Reviewed Papers


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