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  • MABN1190 - Anti-PSD95 Antibody, clone 1A8.1

MABN1190 Sigma-Aldrich

Anti-PSD95 Antibody, clone 1A8.1

clone 1A8.1, from mouse

Synonym: Disks large homolog 4, Postsynaptic density protein 95, PSD-95, Synapse-associated protein 90, SAP-90, SAP90

  •  eCl@ss 32160702



Related Categories Alphabetical Index, Antibodies, PS-PS, Primary Antibodies
clone   1A8.1, monoclonal
biological source   mouse
application(s)   immunohistochemistry: suitable
  western blot: suitable
species reactivity   rat, human
isotype   IgG1κ
Quality Level   100
antibody product type   primary antibodies
NCBI accession no.   NP_001122299
UniProt accession no.   P78352


General description

Disks large homolog 4 (UniProt P78352; also known as Postsynaptic density protein 95, PSD-95, SAP-90, SAP90, Synapse-associated protein 90) is encoded by the DLG4 (also known as PSD95) gene (Gene ID 1742) in human. PSD-95 belong to the family of membrane-associated guanylate kinases (MAGUKs), which also include PSD-93, SAP97 and SAP102. PSD95 is predominantly expressed in the hippocampus CA1 region and prefrontal cortex of the brain, where it localizes in a somatodendritic pattern in the post-synaptic membrane and in presynaptic axon terminals of inhibitory neurons. PDS-95 is the major scaffolding protein in the excitatory postsynaptic density (PSD) and a potent regulator of synaptic strength via interactions with a diverse PSD proteins, including NMDA receptors (NMDARs), AMPA receptor (AMPAR) complexes via Stargazin/TARP, adhesion molecules, as well as other scaffolding proteins, such as GKAP and Shank. PSD95 and neuronal nitric-oxide synthase (nNOS) interaction plays a role in maintaining hypersensitivity in acute and chronic pain. In addition, the assembly of the GluR6-PSD95-CaMKII complex is implicated as a majore signaling module that mediates injury induced by brain ischemia by facilitating GluR6 serine phosphorylation by CaMKII and the activation of JNK.


Clone 1A8.1 epitope sequence is present in all spliced isoforms of human, mouse, and rat PSD95 reported by UniProt (P78352, Q62108, P31016).


Epitope: Region between PDZ domain 2 & 3.

KLH-conjugated linear peptide corresponding to the region between PDZ domain 2 & 3 of human PSD95.


Anti-PSD95 Antibody, clone 1A8.1 is an antibody against PSD95 for use in Western Blotting, Immunohistochemistry.

Immunohistochemistry Analysis: A 1:50 dilution from a representative lot PSD95 in human cerebral cortex and cerebellum tissue sections.

Research Category

Research Sub Category
Synapse & Synaptic Biology

Target description

~80 kDa observed. 80.50/80.47/80.47 kDa human/mouse/rat isoform 1; PSD95-alpha), 85.43/85.42 kDa (human/mouse isoform 2; PSD95-beta), 80.13/80.10 kDa (human/mouse isoform 3) calculated.

Physical form

Format: Purified

Protein G purified.

Purified mouse monoclonal IgG1κ antibody in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Storage and Stability

Stable for 1 year at 2-8°C 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.


Evaluated by Western Blotting in rat hippocampus tissue lysate.

Western Blotting Analysis: 0.5 µg/mL of this antibody detected PSD95 in 10 µg of rat hippocampus tissue lysate.

Other Notes

Concentration: Please refer to lot specific datasheet.

Safety & Documentation

Safety Information

WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles


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