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Synapsin I Antibody

Catalog # NB300-104 | Novus Biologicals a Bio-Techne Brand
Catalog #
Size / Price

Key Product Details

Validated by

Orthogonal Validation

Species Reactivity

Human, Mouse, Rat, Guinea Pig, Primate


Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry Free-Floating, Immunohistochemistry-Frozen, Immunohistochemistry-Paraffin, Immunoprecipitation, Western Blot



Antibody Source

Polyclonal Rabbit IgG


Please see the vial label for concentration. If unlisted please contact technical services.

Product Summary for Synapsin I Antibody


Native protein purified from bovine brain. Accession # P17599

Reactivity Notes

Primate reactivity reported in scientific literature (PMID: 20384782). Guinea Pig reactivity reported in scientific literature (PMID: 25339870).


Synapse, Synaptic vesicle, Golgi apparatus


Specific for endogenous levels of the ~78 kDa synapsin I doublet. Immunolabeling blocked by preadsorption of antibody with the protein used to generate the antibody.


pre-Synaptic Marker







Theoretical MW

78 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.


PLEASE NOTE: If 0.01mg size is ordered, product will come lyophilized from 5 mM ammonium bicarbonate. Please reconstitute lyophilized product in 50 ul phosphate buffered saline (PBS: 137 mM NaCl, 7.5 mM Na2HPO4, 2.7 mM KCl, 1.5 mM KH2PO4, pH 7.4)

Scientific Data Images for Synapsin I Antibody

Immunocytochemistry/Immunofluorescence: Synapsin I Antibody [NB300-104] - hPDLSCs-derived neural-like cells are connected by synapse-like interactions. hPDLSCs-derived neural-like cells connect to one another. Synapse-associated protein Synapsin1 is found in the cell membrane of hPDLSCs-derived neural-like cells at the neurite contact areas. Scale bar: 25 um. Image collected and cropped by CiteAb from the following publication ( licensed under a CC-BY license.
Immunocytochemistry/Immunofluorescence: Synapsin I Antibody [NB300-104] - Characterization of WT and slow ESCs differentiated to neurons. Immunofluorescence staining for neuronal markers Map2, and Syn1 in neurons cultured on poly-ornithine-/laminin-coated plates. Expression of neuronal markers in neurons cultured on poly-ornithine-/laminin-coated plates from RNA-seq analysis, n = 3. Image collected and cropped by CiteAb from the following publication ( licensed under a CC-BY license.
Western Blot: Synapsin I Antibody [NB300-104] - Western blot analysis showing induced expression of neuronal functional marker Synapsin I at protein levels in MNC (meningial neuronal construct). Image collected and cropped by CiteAb from the following publication (// licensed under a CC-BY license.

Applications for Synapsin I Antibody

Recommended Usage

Immunocytochemistry/ Immunofluorescence







1 ug per 200ug lysate

Western Blot

Application Notes
NB 300-104 can be used in Western blot where a doublet is seen at ~ 80 kDa representing synapsin Ia and Ib. Immunofluoresence, Immunoprecipitation (1 ug will quantitatively immunoprecipitate all synapsin in 200 ug of rat brain.) May work in IHC-Paraffin but this has not been tested. Differential distribution of the synapsins in the rat olfactory bulb. Has been reported in the literature to work in WB (rat cortex), IHC (cryosections) on rat olfacotry bulb. (PMID: 8283238) Use in Immunohistochemistry free floating reported in multiple pieces of scientific literature .
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Reviewed Applications

Read 1 review rated 5 using NB300-104 in the following applications:

Published Applications

Read 52 publications using NB300-104 in the following applications:

Formulation, Preparation, and Storage


Antigen Affinity-purified


10mM HEPES (pH 7.5), 0.15M NaCl, 0.1 mg/ml BSA and 50% Glycerol


No Preservative


Please see the vial label for concentration. If unlisted please contact technical services.


The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at -20C. Avoid freeze-thaw cycles.

Background: Synapsin I

Synapsin I, also called Synapsin-1 or SYN1, belongs to Synapsin family (Synapsin I, Synapsin II, Synapsin III) of evolutionarily conserved phospho-proteins which are associated with the cytosolic side of the synaptic vesicles and tether the latter to actin cytoskeleton, thus forming a reserve pool. Synapsins represents the most abundant of neuron-specific phosphor-proteins, consisting 9% of the total amount of all vesicle proteins in neurons wherein they play a critical role in the regulation of neurotransmitter release. Synapsin I is present in axon terminals and plays a role in regulating the secretion of neurotransmitters; thus, it influences synaptic plasticity by regulating pre- and post-synaptic vesicular release. Synapsins I and II are typically found in mature synapses, while synapsin III is often attributed to developing synapses with lesser overall expression. Phosphorylation at Ser-9 residue results in dissociation of Synapsins I from synaptic vesicles which is important for synaptic vesicle neurotransmitter release. Mutations in Synapsin I have been linked to Epilepsy X-linked, with variable learning disabilities and behavior disorders (XELBD) which is a neurologic disorder characterized by variable combinations of epilepsy, learning difficulties, macrocephaly, and aggressive behavior.

Alternate Names

SYN1, Synapsin I, synaptic marker, synaptic markers immunohistochemistry

Entrez Gene IDs

6853 (Human); 20964 (Mouse); 24949 (Rat)

Gene Symbol



Product Documents for Synapsin I Antibody

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Product Specific Notices for Synapsin I Antibody

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.


FAQs for Synapsin I Antibody

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  • Q: How many days do you recommend culturing primary neurons to get a good Synapsin I signal? Can you please send the protocol used to validate this antibody in immunofluorescence?

    A: It was validated in IF by a collaborator, so I do not have a specific protocol to offer. However I can tell you that the neurons were cultured for 14 days.

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