TFPI Antibody [Unconjugated]

Western blot shows lysate of mouse placenta tissue. PVDF membrane was probed with 2 µg/mL of Goat Anti-Mouse TFPI Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2975) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). A specific band was detected for TFPI at approximately 37-42 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Simple Western lane view shows lysates of mouse placenta tissue, loaded at 0.2 mg/mL. A specific band was detected for TFPI at approximately 50-60 kDa (as indicated) using 100 µg/mL of Goat Anti-Mouse TFPI Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2975) followed by 1:50 dilution of HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF109). This experiment was conducted under reducing conditions and using the 12-230 kDa separation system.

• Reactivity: Mu
• Applications: WB, Simple Western, IP
• Clonality: Polyclonal
• Host: Goat
• Conjugate: Unconjugated
• Concentration: LYOPH

TFPI Antibody [Unconjugated] Summary

• Immunogen: Mouse myeloma cell line NS0-derived recombinant mouse TFPI
  Leu29-Lys289
  Accession # O54819
• Specificity: Detects mouse TFPI in direct ELISAs and Western blots. In direct ELISAs and Western blots, approximately 20% cross-reactivity with recombinant human TFPI and less than 5% cross-reactivity with recombinant mouse TFPI-2 is observed.
• Source: N/A
• Isotype: IgG
• Clonality: Polyclonal
• Host: Goat
• Gene: TFPI
• Purity Statement: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • Immunoprecipitation 25 ug/mL
  • Simple Western 100 ug/mL
  • Western Blot 2 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 °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.
• 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: Reconstitute at 0.2 mg/mL in sterile PBS.

Notes

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

Alternate Names for TFPI Antibody [Unconjugated]

• convertin
• EPI
• EPITFPI1LACITFI
• Extrinsic pathway inhibitor
• LACI
• Lipoprotein-associated coagulation inhibitor
• TFPI
• tissue factor pathway inhibitor (lipoprotein-associated coagulation inhibitor)
• tissue factor pathway inhibitor

Background

Tissue Factor Pathway Inhibitor (TFPI), also known as lipoprotein-associated coagulation inhibitor (LACI) and extrinsic pathway inhibitor (EPI), is a physiological inhibitor of extrinsic pathway of coagulation and has biological functions of anticoagulation and anti-inflammation (1). It is a secreted protein with an N-terminal acidic region, three Kunitz (K) domains separated by two linker regions, and a C-terminal basic region (2). The first K domain (residues 50-100) inhibits coagulation factor VIIa complexed to tissue factor (TF). The second K domain (residues 121-171) inhibits factor Xa. The third K domain (residues 225-275) binds to heparin (3). The C-terminal basic region may have several functions. For example, it plays an important role in the binding of TFPI to cell surfaces (2). The purified recombinant mouse TFPI ends at residue 289 and does not contain the last 17 residues (residues 290-306) in the C-terminal region. It inhibits the activity of recombinant human Coagulation Factor VII (R&D Systems, Catalog # 2338-SE) in the presence of recombinant human Tissue Factor (Catalog # 2339-PA) .

1. Bai, H. et al. (2005) Thromb Haemost. 93:1055.
2. Bajaj, M.S. et al. (2001) Thromb Haemost. 86:959.
3. Mine, S. et al. (2002) Biochemistry 41:78.

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: TFPI
• Uniprot:
  • O54819()