Human Serpin A4/Kallistatin Biotinylated Antibody

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Product Details
Supplemental Products

Human Serpin A4/Kallistatin Biotinylated Antibody Summary

Species Reactivity
Detects human Serpin A4/Kallistatin in ELISAs and Western blots. In sandwich immunoassays, less than 0.5% cross‑reactivity with recombinant human (rh) Serpin A1, rhSerpin A3, rhSerpin A5, rhSerpin C1, rhSerpin D1, rhSerpin E1, rhSerpin E2, and rhSerpin F2 is observed.
Polyclonal Goat IgG
Antigen Affinity-purified
Mouse myeloma cell line NS0-derived recombinant human Serpin A4/Kallistatin
Accession # AAA59454
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.


Recommended Concentration
Western Blot
0.1 µg/mL
Recombinant Human Serpin A4/Kallistatin (Catalog # 1669-PI)

Human Serpin A4/Kallistatin Sandwich Immunoassay

Recommended Concentration
ELISA Detection (Matched Antibody Pair)
0.1-0.4 µg/mL 

Use in combination with:

Capture Reagent: Human Serpin A4/Kallistatin Antibody (Catalog # MAB16691)

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
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.

Background: Serpin A4/Kallistatin

Serpin A4 is a member of the Serpin superfamily of the serine protease inhibitors (1). Known also as Kallistatin or proteinase inhibitor 4, Serpin A4 has been shown to function as a specific inhibitor of tissue kallikrein and as an inhibitor of angiogenesis and tumor growth (2, 3).

  1. Silverman, G.A. et al. (2001) J. Biol. Chem. 276:33293.
  2. Chen, V.C. et al. (2000) J. Biol. Chem. 275:40371.
  3. Miao, R.Q. et al. (2002) Blood 100:3245.
Entrez Gene IDs
5267 (Human)
Alternate Names
antitrypsin), member 4; KAL; Kallistatin; KLST; KSTKallikrein inhibitor; member 4; PI-4; PI4Peptidase inhibitor 4; protease inhibitor 4 (kallistatin); serine (or cysteine) proteinase inhibitor, clade A (alpha-1 antiproteinase; Serpin A4; serpin peptidase inhibitor, clade A (alpha-1 antiproteinase, antitrypsin)

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