Recombinant Mouse Caspr2 His-tag Protein, CF Summary
Ala28-Ser1262, with a C-terminal 6-His tag
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
|Formulation||Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.|
|Reconstitution||Reconstitute at 500 μg/mL in PBS.|
|Shipping||The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.|
|Stability & Storage:||Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
2 μg/lane of Recombinant Mouse Caspr2 His-tag (Catalog # 10196-CR) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® blue staining, showing bands at 130-150 kDa.
Contactin Associated Protein-Like 2 (CASPR2), also known as Cntnap2, is a neuronal type I transmembrane member of the neurexin family of adhesion molecules (ref). CASPR2, along with CASPR1 (or Cntnap1), is required for radical and longitudinal organization of myelinated axons (1). Mature mouse CASPR2 consists of a large extracellular domain (ECD) containing four Laminin G-like domains as well as two EFG-like domains and a Fibrinogen C-terminal domain, a transmembrane segment, and a short cytoplasmic domain. The ECD of mouse CASPR2 shares 94% and 93% amino acid (aa) identity with the human and rat ECD, respectively. CASPR2 is thought to be important for the control of neuron-glia interactions and is associated with alterations in synaptic structure, neuronal network activity, and an autism-related phenotype in mice (2, 3). In myelinated nerves, CASPR2 is confined to the juxtaparanodal region of the axon where it appears to associate with the immunoglobulin domains of TAG-1 (transient axonal glycoprotein 1) to form a scaffold, which clusters the potassium channels Kv1.1 and Kv1.2 (4). Recent studies demonstrate that CASPR2 binds to contactin1 (5).
- Gordon A. et al. (2014) J. Neurosci. 10:1523.
- Cope, E. et al. (2016) eNeuro. 0196-16.
- Peñagarikano O. et al. (2011) Cell. 147(1):236.
- Poliak, S. et al. (1999) Neuron 24:1037.
- Rubio-Marrero, E. N. et al. (2016) J. Bio. Chem. 291:5788.
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