Detects human Contactin-3 in direct ELISAs. In direct ELISAs, approximately 10% cross-reactivity with recombinant mouse Contactin-3 is observed, and less than 5% cross-reactivity with recombinant human (rh) Contactin-4 and rhContactin-5 is observed.
Polyclonal Sheep IgG
Mouse myeloma cell line NS0-derived recombinant human Contactin-3 Pro26-Pro992 Accession # Q9P232
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
Contactin‑3 in Human Brain.
Contactin‑3 was detected in immersion fixed paraffin-embedded sections of human brain (cerebellum) using Sheep Anti-Human Contactin‑3 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF7125) at 3 µg/mL overnight at 4 °C. Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (Catalog # CTS013). Tissue was stained using the Anti-Sheep HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS019) and counterstained with hematoxylin (blue). Specific staining was localized to Purkinje neurons. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Preparation and Storage
Sterile PBS to a final concentration of 0.2 mg/mL.
Reconstitution Buffer Available
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Contactin-3, also known as BIG-1, CNTN3 and PANG, is a 150 kDa member of the TAG/F3 subgroup of Contactin neuronal adhesion proteins (1, 2). Mature human Contactin-3 consists of six immunoglobulin-like domains, a flexible linker region, four fibronectin type III domains, and a GPI anchor (3, 4). Human Contactin-3 shares 92% aa sequence identity with mouse and rat Contactin-3. Contactin-3 is primarily expressed in the brain in discrete regions including the frontal lobe, occipital lobe, cerebellum, amygdala, and hippocampus (5, 6). Alternative splicing in rat may generate a soluble isoform (4). Mouse plasmacytoma cell lines produce multiple transcripts of Contactin-3 due to the presence of IAP proviruses (3). Immobilized Contactin-3 promotes neurite outgrowth from rat hippocampal neurons (4).
Shimoda, Y. and K. Watanabe (2009) Cell Adhesion Migration 3:64.
Denisenko-Nehrbass, N. et al. (2002) J. Physiol. 96:99.
Connelly, M.A. et al. (1994) Proc. Natl. Acad. Sci. 91:1337.
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