TFPI active protein

Human CellExp TFPI, human recombinant

Cat. Num. AAA844659

• Gene Names: TFPI; EPI; TFI; LACI; TFPI1
• Applications: SDS-Page
• Purity: >=95%
• Synonyms: TFPI; Human CellExp TFPI; human recombinant; LACI; TFPI1; EPI; TFI; TFPI active protein

• Host: HEK293 cells
• Purity/Purification: >=95%
• Form/Format: Lyophilized from 0.22 mum filtered solution in PBS, pH 7.4. Normally Mannitol or Trehalose is added as protectants before lyophilization.; Appearance: Lyophilized
• Sequence Length: 251

• Applicable Applications for TFPI active protein: SDS-PAGE
• Solubility/Reconstitution Instructions: Centrifuge the vial prior to opening. Reconstitute in sterile PBS, pH 7.4 to a concentration of 50 ug/ml. Do not vortex. This solution can be stored at 2-8 degree C for up to 1 month. For extended storage, it is recommended to store at -20 degree C.
• Endotoxin Level: <1 EU/mug by LAL method
• 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 < 0.35 nM, as measured in 100 mul reaction mixture containing 1.25 ng trypsin, 10 muM substrate, 50 mM Tris, 10 mM CaCl2, 150 mM NaCl, 0.05% Brij-35 (w/v), 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 < 0.35 nM, as measured in 100 mul reaction mixture containing 1.25 ng trypsin, 10 muM substrate, 50 mM Tris, 10 mM CaCl2, 150 mM NaCl, 0.05% Brij-35 (w/v), pH 7.5.
• Handling: Centrifuge the vial prior to opening.
• Preparation and Storage: At -20 degree C; Shelf Life: 12 months

Testing Data

Related Product Information for TFPI active protein

Background: Tissue factor pathway inhibitor (TFPI) also known as Extrinsic pathway inhibitor (EPI), Lipoprotein - associated coagulation inhibitor (LACI), is a plasma proteinase inhibitor synthesized by vascular endothelial cells and part of it is associated with glycosaminoglycans of these cells. TFPI is a single-chain polypeptide which can reversibly inhibit Factor Xa (Xa) and Thrombin (Factor IIa). TFPI is a secreted protein with a N-terminal acidic region, three Kunitz (K) domains separated with by two linker regions, and a C-terminal basic region. The first K domain inhibits coagulation factor VIIa complexed to tissue factor (TF); The second K domain inhibits factor Xa; The third K domain binds to heparin; The C-terminal basic region may have several functions. For example, it plays an important role in binding of TFPI to cell surfaces.

Product Categories/Family for TFPI active protein

Proteins and Enzymes; Human cell expressed recombinant proteinsCytokines; Growth Factors & Hormones; Human cell expressed recombinant proteinsProteins and Enzymes; Cytokines; Growth Factors & Hormones; Cytokines & Growth Factors (A-Z) Proteins and Enzymes

NCBI and Uniprot Product Information

• NCBI GI #: 73760409
• NCBI GeneID: 7035
• NCBI Accession #: NP_001027452.1
• NCBI GenBank Nucleotide #: NM_001032281.2
• UniProt Accession #: P10646; O95103; Q53TS4
• Molecular Weight: This protein is fused with 6×His tag at the C-terminus, has a calculated MW of 30 kDa. The predicted N-terminus is Asp 29. DTT-reduced Protein migrates as 41-45 kDa due to glycosylation.
• NCBI Official Full Name: tissue factor pathway inhibitor isoform b
• NCBI Official Synonym Full Names: tissue factor pathway inhibitor (lipoprotein-associated coagulation inhibitor)
• NCBI Official Symbol: TFPI
• NCBI Official Synonym Symbols: EPI; TFI; LACI; TFPI1
• NCBI Protein Information: tissue factor pathway inhibitor
• UniProt Protein Name: Tissue factor pathway inhibitor
• Protein Family: Tissue factor pathway inhibitor
• UniProt Gene Name: TFPI
• UniProt Synonym Gene Names: LACI; TFPI1; TFPI; EPI; LACI
• UniProt Entry Name: TFPI1_HUMAN

NCBI Description

This gene encodes a protease inhibitor that regulates the tissue factor (TF)-dependent pathway of blood coagulation. The coagulation process initiates with the formation of a factor VIIa-TF complex, which proteolytically activates additional proteases (factors IX and X) and ultimately leads to the formation of a fibrin clot. The product of this gene inhibits the activated factor X and VIIa-TF proteases in an autoregulatory loop. The encoded protein is glycosylated and predominantly found in the vascular endothelium and plasma in both free forms and complexed with plasma lipoproteins. Several alternatively spliced transcript variants of this gene have been described, but the full-length nature of some of these variants has not been confirmed. [provided by RefSeq, Jul 2008]

Uniprot Description

TFPI: Inhibits factor X (X(a)) directly and, in a Xa-dependent way, inhibits VIIa/tissue factor activity, presumably by forming a quaternary Xa/LACI/VIIa/TF complex. It possesses an antithrombotic action and also the ability to associate with lipoproteins in plasma. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Membrane protein, GPI anchor; Inhibitor; Secreted, signal peptide; Secreted

Chromosomal Location of Human Ortholog: 2q32

Cellular Component: extracellular space; cell surface; endoplasmic reticulum; extracellular region; plasma membrane

Molecular Function: serine-type endopeptidase inhibitor activity; endopeptidase inhibitor activity

Biological Process: blood coagulation, extrinsic pathway; blood coagulation