Bat reactivity reported in scientific literature (PMID: 29297931).. Please note that this antibody is reactive to Mouse and derived from the same host, Mouse. Additional Mouse on Mouse blocking steps may be required for IHC and ICC experiments. Please contact Technical Support for more information.
Packaging, Storage & Formulations
Store at -20C. Avoid freeze-thaw cycles.
PBS (pH 7.4) and 50% Glycerol
0.09% Sodium Azide
Protein G purified
Alternate Names for Caspr2 Antibody (S67-25)
Cell recognition molecule Caspr2
contactin associated protein-like 2
contactin-associated protein 2
contactin-associated protein-like 2
homolog of Drosophila neurexin IV
Ion channels are integral membrane proteins that help establish and control the small voltage gradient across the plasma membrane of living cells by allowing the flow of ions down their electrochemical gradient (1). They are present in the membranes that surround all biological cells because their main function is to regulate the flow of ions across this membrane. Whereas some ion channels permit the passage of ions based on charge, others conduct based on a ionic species, such as sodium or potassium. Furthermore, in some ion channels, the passage is governed by a gate which is controlled by chemical or electrical signals, temperature, or mechanical forces. There are a few main classifications of gated ion channels. There are voltage- gated ion channels, ligandgated, other gating systems and finally those that are classified differently, having more exotic characteristics. The first are voltage- gated ion channels which open and close in response to membrane potential. These are then separated into sodium, calcium, potassium, proton, transient receptor, and cyclic nucleotide-gated channels; each of which is responsible for a unique role. Ligand-gated ion channels are also known as ionotropic receptors, and they open in response to specific ligand molecules binding to the extracellular domain of the receptor protein. The other gated classifications include activation and inactivation by second messengers, inward-rectifier potassium channels, calcium-activated potassium channels, two-pore-domain potassium channels, light-gated channels, mechano-sensitive ion channels and cyclic nucleotide-gated channels. Finally, the other classifications are based on less normal characteristics such as two-pore channels, and transient receptor potential channels (2). Caspr (contactin-associated protein) is a part of the neurexin family. It lies in the paranodal section of the myelin sheath. It's role is for myelin sheath attachment along with contactin in a cis-complex (3). Caspr and Caspr2 regulate the formation of distinct axonal domains around the nodes of Ranvier. Caspr is required for the generation of a membrane barrier at the paranodal junction, whereas Caspr serves as a membrane scaffold that clusters Kv1 channels at the juxtaparanodal region. Both interact with protein 4.1B (4).
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.
The antibody didn't work under unpermeablized condition, it should be working because it targets the extracelluar domain of Caspr2 protein, however it works after the transfected cells were permeablized with 0.2% Triton in PBS for 5 minutes.
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