Human CellExp™ TFPI2, human recombinant

Biomolecule/Target: TFPI2

Synonyms: TFPI2, PP5, REF1

Alternates names: TFPI2, PP5, REF1

Taglines: Plays a role in the regulation of plasmin-mediated matrix remodeling.

Taglines: USA

Country of Animal Origin: USA

NCBI Gene ID #.: 7980

NCBI Gene Symbol: TFPI2

Gene Source: Human

Accession #: P48307

Recombinant: Yes

Source: HEK293 cells

Purity by SDS-PAGE #: ≥95%

Assay: SDS-PAGE

Purity: N/A

Assay #2: N/A

Endotoxin Level: <1 EU/μg by LAL method

Activity (Specifications/test method): N/A

Biological activity: Measured by its ability to inhibit trypsin cleavage of a fluorogenic peptide substrate, Mca - RPKPVE - Nval - WRK (Dnp) - NH2. The IC50 value is < 2.5 nM, as measured in 100μL reaction mixture containing 1.25 ng trypsin, 10 μM substrate, 50 mM Tris, 10 mM CaCl2, 0.15 M NaCl, 0.05% Brij-35, pH 7.5.

Results: Measured by its ability to inhibit trypsin cleavage of a fluorogenic peptide substrate, Mca - RPKPVE - Nval - WRK (Dnp) - NH2. The IC50 value is < 2.5 nM, as measured in 100μL reaction mixture containing 1.25 ng trypsin, 10 μM substrate, 50 mM Tris, 10 mM CaCl2, 0.15 M NaCl, 0.05% Brij-35, pH 7.5.

Binding Capacity: N/A

Unit Definition: N/A

Molecular Weight: This protein is fused with 6×His tag at the N-terminus, has a calculated MW of 22.7 kDa. The predicted N-terminus is Asp 23. DTT-reduced Protein migrates as 26-32 kDa due to glycosylation.

Concentration: N/A

Appearance: Lyophilized

Physical form description: Lyophilized from 0.22 μm filtered solution in 20 mM MES and 100 mM NaCl, pH 6.5. Normally Mannitol or Trehalose is added as protectants before lyophilization.

Reconstitution Instructions: Centrifuge the vial prior to opening. Reconstitute in sterile PBS, pH 7.4 to a concentration of 50 µg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 month. For extended storage, it is recommended to store at -20°C.

Background Information: Tissue Factor Pathway Inhibitor 2 (TFPI­2), also known as placental protein 5 (PP5) and retinal pigment epithelial cell factor 1 (REF­1), is a member of the Kunitz-type serine proteinase inhibitor family, is a structural homologue of tissue factor pathway inhibitor (TFPI). TFPI2 is highly abundant in the full-term placenta and widely expressed in umbilical vein endothelial cells, liver, placenta, heart, pancreas, and maternal serum at advanced pregnancy. TFPI­2 may play a role in the regulation of plasmin-mediated matrix remodeling. Inhibits trypsin, plasmin, factor VIIa/tissue factor and weakly factor Xa and has no effect on thrombin. Reduced synthesis of TFPI-2 has been related to numerous pathophysiological processes such as inflammation, angiogenesis, atherosclerosis, retinal degeneration and tumor growth / metastasis.

Amino acid sequence: N/A

Handling: Centrifuge the vial prior to opening.

Usage: For Research Use Only! Not to be used in humans