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  • AB1543P - Anti-Synapsin I Antibody

AB1543P Sigma-Aldrich

Anti-Synapsin I Antibody

clone, Chemicon®, from rabbit

Synonym: Synapsin-1

  •  eCl@ss 32160702

  •  NACRES NA.41



Related Categories Alphabetical Index, Antibodies, Primary Antibodies, SU-SY
clone   polyclonal
biological source   rabbit
application(s)   ELISA: suitable
  immunocytochemistry: suitable
  immunohistochemistry: suitable (paraffin)
  immunohistochemistry: suitable
  immunoprecipitation (IP): suitable
  western blot: suitable
species reactivity   mouse, bovine, rat, human
shipped in   dry ice
Quality Level   100
antibody product type   primary antibodies
mfr. no.   Chemicon®
NCBI accession no.   NM_006950.3
UniProt accession no.   P17600
Gene Information   human ... SYN1(6853)


General description

The synapsins are a family of proteins that have long been implicated in the regulation of neurotransmitter release at synapses. Specifically, they are thought to be involved in regulating the number of synaptic vesicles available for release via exocytosis at any one time. Synapsins are encoded by three different genes, synapsin I, II and III, and different neuron terminals will encode different amounts of these; synapsin will make up 1% of total brain protein at any one time.
Current studies suggest the following hypothesis for the role of synapsin: synapsins bind synaptic vesicles to components of the cytoskeleton which prevents them from migrating to the presynaptic membrane and releasing transmitter. During an action potential, synapsins are phosphorylated by Ca2+/calmodulin-dependent protein kinase II, releasing the synaptic vesicles and allowing them to move to the membrane and release their neurotransmitter.


Synapsin I (Mr of 80,000 and 77,000). Synapsin is located only in brain nerve terminal and is an excellent marker for synapes. Immunolabeling is blocked by preadsorption of the antibody with synapsin I.


Synapsin I (mixture of Ia & Ib) purified from bovine brain.


Research Category

Research Sub Category
Synapse & Synaptic Biology

This Anti-Synapsin I Antibody is validated for use in ELISA, IC, IH, IH(P), IP, WB for the detection of Synapsin I.

Western blotting:
1:200-1:1,000 dilution of a previous lot was used.

1:500-1:2,000 dilution of a previous lot was used.

1 μg of a previous lot immunoprecipitated all of the synapsin I from a SDS homogenate of 200 μg of rat brain protein.

Note: The above dilutions are with 35S-protein A; with ECL dilutions may need to be considerably higher to obtain specific immunolabeling.



Optimal working dilutions must be determined by the end user.

Target description

77 & 80 kDa

Physical form

Format: Purified

ImmunoAffinity Purified

Purified rabbit polyclonal in buffer lyophilized from 5 mM ammonium bicarbonate. Reconstitute with 50 μL of PBS.

Storage and Stability

Stable for 1 year at -20ºC from date of receipt.


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.

Legal Information

CHEMICON is a registered trademark of Merck KGaA, Darmstadt, Germany


Synapsin I (AB1543P) representative staining pattern/morphology in rat hippocampal neurons. Tissue was pretreated with Citrate pH 6.0, antigen retrieval. This lot of antibody was diluted to 1:1000, IHC-Select reagents used with HRP-DAB. Immunoreactivity is seen directly associated with terminal end of neuronal cell body.
IHC-Paraffin Staining With Epitope Retrieval:
Rat Hippocampus


Replaces: MAB355

Analysis Note

Brain tissue.

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Safety & Documentation

Safety Information

WGK Germany 
Protocols & Articles


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