Nidogen‑1/Entactin in Human Heart. Nidogen‑1/Entactin was detected in immersion fixed paraffin-embedded sections of human heart using Goat Anti-Human Nidogen‑1/Entactin Biotinylated Antigen Affinity-purified Polyclonal Antibody (Catalog # BAF2570) at 15 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). Lower panel shows a lack of labeling if primary antibodies are omitted and tissue is stained only with secondary antibody followed by incubation with detection reagents. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
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.
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.
Nidogen-2 (also called entactin-2) is a 200 kDa, secreted, basement membrane glycoprotein. Nidogens-1 and -2 are expressed in nearly all basement membranes where they interact with laminins, collagen type IV, and proteoglycan family members. Nidogen-2 contains three globular domains (G1-3) separated by a link region and an extended rod-shaped segment. The G1 domain is reported to bind type IV collagen, the G2 domain interacts with perlecan, and C-terminal G3 is associated with laminin binding. There is one EGF-like motif and a short peptide that ligates alpha 3 beta 1 integrins. The rod-shaped segment contains four additional EGF-like motifs and two thyroglobulin type 1 domains that serve as a binding site for alpha V beta 3 integrins.
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