Overview
- Peptide (C)ASAESRDFSGAGGIGVFSE, corresponding to amino acid residues 467-485 of rat NaV1.2 (Accession P04775). Intracellular loop between domains I and II.
NaV1.3 - 12/15 amino acid residues identical.
- Rat and mouse brain lysate (1:1000-1:3000).
Western blot analysis of rat brain (lanes 1 and 3) and mouse brain (lanes 2 and 4) membranes:1,2. Guinea pig Anti-SCN2A (NaV1.2) Antibody (#ASC-002-GP), (1:1000).
3,4. Guinea pig Anti-SCN2A (NaV1.2) Antibody, preincubated with SCN2A/Nav1.2 Blocking Peptide (#BLP-SC002).- Following a broad screen of secondary antibodies, the following was used for this application: #106-035-006 (Jackson ImmunoResearch).
- Rat paraventricular nucleus (1:2000). Following a broad screen of secondary antibodies, the following was used for this application: #106-485-006 (Jackson ImmunoResearch).
Voltage-gated sodium channels (NaV) are essential for the generation of action potentials and for cell excitability.1 NaV channels are activated in response to depolarization and selectively allow flow of Na+ ions. To date, nine NaV α subunits have been cloned and named NaV1.1-NaV1.9.4-5 The NaV channels are classified into two groups according to their sensitivity to Tetrodotoxin (TTX): TTX-sensitive (NaV1.1, NaV1.2, NaV1.3, NaV1.4, NaV1.6 and NaV1.7) and TTX-resistant (NaV1.5, NaV1.8 and NaV1.9).2-3
Mammalian sodium channels are heterotrimers, composed of a central, pore-forming α subunit and two auxiliary β subunits. The expression of the α subunit isoform is developmentally regulated and tissue specific. Sodium channels in the adult central nervous system and heart contain β1 through β4 subunits, whereas sodium channels in adult skeletal muscle have only the β1 subunit.6,7
NaV1.2, also known as SCN2A, is primarily expressed in the central nervous system (CNS) and is localized in unmyelinated or premyelinated axons and dendrites. Mutations in the NaV1.2 channel have been identified in different types of epilepsy.
