HAI-1 is a Kunitz-type serine protease inhibitor, identified as a strong inhibitor of HGF activator (HGFA) and matriptase (1). The membrane-anchored HAI-1 consists of two Kunitz domains, a LDL-receptor-like domain, and a C-terminal transmembrane domain (2). Two soluble forms are generated by ectodomain shedding, one with a single Kunitz domain and the other with two Kunitz domains. HAI-1 is not only an inhibitor but also a specific receptor of active HGFA, acting as a reservoir of this enzyme on the cell surface (3). The shedding of HAI-1 and HGFA/HAI-1 complex is enhanced by treatment with phorbol 12-myristate 13-acetate or IL-1 beta. The regulated shedding is completely inhibited by a synthetic zinc metalloprotease inhibitor (3).
Key Product Details
Species Reactivity
Human
Applications
ELISA Capture (Matched Antibody Pair)
Label
Unconjugated
Antibody Source
Monoclonal Mouse IgG1 Clone # 169409
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Product Specifications
Immunogen
Mouse myeloma cell line NS0-derived recombinant human HAI-1
Pro37-Glu449
Accession # NP_003701
Pro37-Glu449
Accession # NP_003701
Specificity
Detects human HAI-1 in ELISAs. In sandwich ELISAs, no cross-reactivity with recombinant mouse HAI-1, recombinant human (rh) TFPI, rhTFPI-2, rhAPP, rhHAI-2A, rhGASP-1, or rhGASP-2 is observed.
Clonality
Monoclonal
Host
Mouse
Isotype
IgG1
Applications for Human HAI‑1 Antibody
Human HAI-1 Sandwich Immunoassay
Please Note: Optimal dilutions of this antibody should be experimentally determined.
Formulation, Preparation, and Storage
Purification
Protein A or G purified from hybridoma culture supernatant
Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.
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Formulation
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.
Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store 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.
Calculators
Background: HAI-1
References
- Denda, K. et al. (2002) J. Biol. Chem. 277:14053.
- Shimomura, T. et al. (1997) J. Biol. Chem. 272:6370.
- Kataoka, H. et al. (2000) J. Biol. Chem. 275:40453.
Long Name
HGF Activator Inhibitor Type 1
Alternate Names
HAI1, SPINT1
Gene Symbol
SPINT1
UniProt
Additional HAI-1 Products
Product Documents for Human HAI‑1 Antibody
Certificate of Analysis
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Note: Certificate of Analysis not available for kit components.
Product Specific Notices for Human HAI‑1 Antibody
For research use only
Related Research Areas
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