Serpin B8/Proteinase Inhibitor 8 in Human Pancreas. Serpin B8/Proteinase Inhibitor 8 was detected in immersion fixed paraffin-embedded sections of human pancreas using Human Serpin B8 Monoclonal Antibody (Catalog # MAB4158) at 15 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-Mouse HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS002) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Preparation and Storage
Sterile PBS to a final concentration of 0.5 mg/mL.
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.
Background: Serpin B8/Proteinase Inhibitor 8
Serpin B8 (serine proteinase inhibitor-clade B #8; also PI8) is a 42‑45 kDa, cytoplasmic and secreted member of the ovalbumin (clade B)-subfamily, Serpin superfamily of protease inhibitors. It is produced by multiple cell types and shows inhibitory activity towards furin and other proteinases such as chymotrypsin. Human Serpin B8 is 374 amino acids (aa) in length. Although it has no signal sequence, it is released by platelets. The active inhibitor site lies between Arg336 and Arg342. One potential isoform shows a 2 aa substitution for the C-terminal 134 amino acids. Full length human Serpin B8 shares 78% and 83% aa identity with mouse and canine Serpin B8, respectively.
Entrez Gene IDs:
5271 (Human); 20725 (Mouse); 288937 (Rat)
CAP2; CAP-2; CAP2clade B (ovalbumin), member 8; Cytoplasmic antiproteinase 2; NK10; Peptidase inhibitor 8; PI8; PI-8; protease inhibitor 8 (ovalbumin type); Serpin B8; serpin peptidase inhibitor, clade B (ovalbumin), member 8
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