Contactin-associated protein 1 (Caspr1), also known as Neurexin-4, Paranodin, and NCP1, is an approximately 190 kDa transmembrane protein that is concentrated at paranodal junctions of axons during myelination. It is required for junction formation and ion channel localization and plays an important role in the propagation of saltatory nerve conduction. Caspr1 interacts with Contactins and Nogo-A at the paranodal junction and inhibits the binding of Contactin to glial cell Neurofascin. Caspr1 is proteolytically cleaved by Reelin, and this action is inhibited by the cellular prion protein (PrP). The ECD contains one Factor 5/8-like domain, four Laminin-G-like domains, two EGF-like domains, and one Fibrinogen-like domain.

Long Name

Contactin Associated Protein-like 1

Alternate Names

CNTNAP, CNTNAP1, p190

Gene Symbol

CNTNAP1

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Product Specific Notices for Caspr1 Antibody (753232) [DyLight 650]

DyLight (R) is a trademark of Thermo Fisher Scientific Inc. and its subsidiaries.

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.

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Caspr1 Antibody (753232) [DyLight 650]

Novus Biologicals, part of Bio-Techne | Catalog # FAB7548W

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Background: Caspr1