Serpin B8/Proteinase Inhibitor 8 Antibody (423023)

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.

• Reactivity: Hu
• Applications: IHC
• Clone: 423023
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: Unconjugated
• Concentration: LYOPH

Serpin B8/Proteinase Inhibitor 8 Antibody (423023) Summary

• Immunogen: S. frugiperda insect ovarian cell line Sf21-derived recombinant human Serpin B8/Proteinase Inhibitor 8
  Asp2-Pro374
  Accession # P50452
• Specificity: Detects human Serpin B8/Proteinase Inhibitor 8 in direct ELISAs. In direct ELISAs, approximately 25% cross-reactivity with recombinant mouse (rm) Serpin B8 is observed. No cross-reactivity with recombinant human Serpin A1, A3, A4, A5, A6, A9, A11, A12, B3, B6, B9, C1, D1, E1, E2, F1, F2, G1, I1, I2, rmSerpin A1, A3N, A6, A9, C1, D1, E1, E2, F1, F2, I1, recombinant rat (rr) Serpin A6, or rrSerpin A12 is observed.
• Source: N/A
• Isotype: IgG2a
• Clonality: Monoclonal
• Host: Mouse
• Gene: SERPINB8
• Purity Statement: Protein A or G purified from hybridoma culture supernatant

Applications/Dilutions

• Dilutions:
  • Immunohistochemistry 8-25 ug/mL

Packaging, Storage & Formulations

• Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  12 months from date of receipt, -20 to -70 degreesC as supplied. 1 month, 2 to 8 degreesC under sterile conditions after reconstitution. 6 months, -20 to -70 degreesC under sterile conditions after reconstitution.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
• Preservative: No Preservative
• Concentration: LYOPH
• Reconstitution Instructions: Sterile PBS to a final concentration of 0.5 mg/mL.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Serpin B8/Proteinase Inhibitor 8 Antibody (423023)

• 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

Background

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.

Limitations

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.

Bioinformatics

• Gene Symbol: SERPINB8
• Uniprot:
  • P50452()