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CASPR Polyclonal Antibody
Purified Rabbit Polyclonal Antibody (Pab)
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- BACKGROUND
Application 
| WB, IHC-P, IHC-F, IF, ICC, E |
|---|---|
| Primary Accession | P78357 |
| Reactivity | Rat, Pig, Dog, Bovine |
| Host | Rabbit |
| Clonality | Polyclonal |
| Calculated MW | 154 KDa |
| Physical State | Liquid |
| Immunogen | KLH conjugated synthetic peptide derived from human CASPR/Neurexin4 |
| Epitope Specificity | 151-250/1384 |
| Isotype | IgG |
| Purity | affinity purified by Protein A |
| Buffer | 0.01M TBS (pH7.4) with 1% BSA, 0.02% Proclin300 and 50% Glycerol. |
| SUBCELLULAR LOCATION | Membrane. |
| SIMILARITY | Belongs to the neurexin family. |
| SUBUNIT | Interacts with contactin in cis form. |
| Important Note | This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. |
| Background Descriptions | Neurexins comprise a family of neuronal cell surface proteins, which include neurexin I (NRXN1), neurexin II (NRXN2), neurexin III (NRXN3) and CASPR (neurexin IV). Neurexins I-III are expressed as å and ∫ isoforms. The å isoforms are made of three cassettes, which contain two LNS (laminin A, neurexins, sex hormone-binding)-domains separated by EGF domains, followed by a transmembrane region and a 55 amino acid cytoplasmic C-terminal. The å isoforms bind to neurexophilins at the second LNS site, and to the excitatory neurotoxin å-latrotoxin. The ∫ isoforms have only one LNS-domain, bind to neuroligins and play a role in the formation and remodeling of synapses. CASPR (for contactin-associated protein 1, also designated paranodin in mouse), contains an extracellular domain similar to the other three neurexins, and binds to the surface glycoprotein contactin. CASPR and the closely related CASPR2, a mammalian homolog of Drosophila neurexin IV (Nrx-IV), demarcate distinct subdomains in myelinated axons. Specifically, CASPR exists at the paranodal junctions, while CASPR2 co-localizes with Shaker-like K+ channels in the juxtaparanodal region. CASPR may play a role in the communication of glial cells and neurons during development. |
| Gene ID | 8506 |
|---|---|
| Other Names | Contactin-associated protein 1, Caspr, Caspr1, Neurexin IV, Neurexin-4, p190, CNTNAP1, CASPR, NRXN4 |
| Target/Specificity | Predominantly expressed in brain. Weak expression detected in ovary, pancreas, colon, lung, heart, intestine and testis. |
| Dilution | WB=1:500-2000,IHC-P=1:100-500,IHC-F=1:100-500,ICC=1:100-500,IF=1:100-500,Flow-Cyt=3ug/Test,ELISA=1:5000-10000 |
| Format | 0.01M TBS(pH7.4), 0.09% (W/V) sodium azide and 50% Glyce |
| Storage | Store at -20 ℃ for one year. Avoid repeated freeze/thaw cycles. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody the antibody is stable for at least two weeks at 2-4 ℃. |
| Name | CNTNAP1 |
|---|---|
| Synonyms | CASPR, NRXN4 |
| Function | Required, with CNTNAP2, for radial and longitudinal organization of myelinated axons. Plays a role in the formation of functional distinct domains critical for saltatory conduction of nerve impulses in myelinated nerve fibers. Demarcates the paranodal region of the axo-glial junction. In association with contactin involved in the signaling between axons and myelinating glial cells. |
| Cellular Location | Membrane; Single-pass type I membrane protein. Cell junction, paranodal septate junction {ECO:0000250|UniProtKB:O54991} |
| Tissue Location | Predominantly expressed in brain. Weak expression detected in ovary, pancreas, colon, lung, heart, intestine and testis |
Research Areas
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Application Protocols
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$ 385.00
Cat# AP54391
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