TPA (36-310) Human

Tissue Plasminogen Activator (36-310 a.a.) Human Recombinant
Cat. No.
BT28916
Source
Sf9, Baculovirus cells.
Synonyms

Tissue-type plasminogen activator, EC 3.4.21.68, tPA, t-PA, t-plasminogen activator, TPA, T-PA, DKFZp686I03148, PLAT and tPA, Alteplase, Reteplase, Plasminogen Activator, Tissue, Plasminogen/Activator Kringle. 

Appearance
Sterile Filtered colorless solution.
Purity

Greater than 90.0% as determined by SDS-PAGE.

Usage
THE BioTek's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

TPA Human Recombinant produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 284 amino acids (36-310a.a.) and having a molecular mass of 32.0kDa (Molecular size on SDS-PAGE will appear at approximately 28-40kDa).
TPA is expressed with a 6 amino acids His tag at C-Terminus and purified by proprietary chromatographic techniques.

Product Specs

Introduction
Tissue plasminogen activator (abbreviated PLAT or tPA) is a secreted serine protease that converts the proenzyme plasminogen to plasmin, a fibrinolytic enzyme. Plasminogen is synthesized as a single chain which is cleaved by PLAT into the two-chain disulfide-linked plasmin. This enzyme plays a role in cell migration and tissue remodeling. Increased enzymatic activity causes hyperfibrinolysis, which manifests as excessive bleeding; decreased activity leads to hypofibrinolysis, which can result in thrombosis or embolism.
Description
Recombinant Human TPA, produced in Sf9 Baculovirus cells, is a single, glycosylated polypeptide chain containing 284 amino acids (36-310 a.a.) and having a molecular mass of 32.0 kDa (Molecular size on SDS-PAGE will appear at approximately 28-40 kDa). TPA is expressed with a 6 amino acids His tag at the C-Terminus and purified by proprietary chromatographic techniques.
Physical Appearance
Sterile Filtered colorless solution.
Formulation
TPA protein solution (0.25 mg/ml) contains 50 mM MES (pH 5.5), 10% glycerol, 100 mM NaCl, and 5 mM CaCl2.
Stability
Store at 4°C if the entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods. For long-term storage, it is recommended to add a carrier protein (0.1% HSA or BSA). Avoid multiple freeze-thaw cycles.
Purity
Greater than 90.0% as determined by SDS-PAGE.
Synonyms

Tissue-type plasminogen activator, EC 3.4.21.68, tPA, t-PA, t-plasminogen activator, TPA, T-PA, DKFZp686I03148, PLAT and tPA, Alteplase, Reteplase, Plasminogen Activator, Tissue, Plasminogen/Activator Kringle. 

Source
Sf9, Baculovirus cells.
Amino Acid Sequence

ADPSYQVICR DEKTQMIYQQ HQSWLRPVLR SNRVEYCWCN SGRAQCHSVP VKSCSEPRCF NGGTCQQALY FSDFVCQCPE GFAGKCCEID TRATCYEDQG ISYRGTWSTA ESGAECTNWN SSALAQKPYS GRRPDAIRLG LGNHNYCRNP DRDSKPWCYV FKAGKYSSEF CSTPACSEGN SDCYFGNGSA YRGTHSLTES GASCLPWNSM ILIGKVYTAQ NPSAQALGLG KHNYCRNPDG DAKPWCHVLK NRRLTWEYCD VPSCSTCGLR QYSQPQFRHH HHHH.

Product Science Overview

Introduction

Tissue Plasminogen Activator (tPA) is a serine protease enzyme involved in the breakdown of blood clots. It plays a crucial role in the fibrinolytic system by converting plasminogen to plasmin, which then degrades fibrin clots. The recombinant form of tPA, specifically the fragment spanning amino acids 36 to 310, has been engineered for various research and therapeutic applications.

Structure and Function

The recombinant tPA fragment (36-310 a.a.) is a human protein expressed in baculovirus-infected insect cells. This fragment includes the essential domains responsible for its activity, such as the kringle domains and the serine protease domain. The kringle domains are involved in binding to fibrin, while the serine protease domain is responsible for the enzymatic activity that converts plasminogen to plasmin .

Expression and Purity

The recombinant tPA (36-310 a.a.) is produced with a His tag at the C-terminus, facilitating its purification through affinity chromatography. The protein is typically purified to over 90% purity and has an endotoxin level of less than 1 EU/µg, making it suitable for various biochemical assays and research applications .

Applications

Recombinant tPA is widely used in research to study the mechanisms of fibrinolysis and to develop therapeutic agents for thrombolytic therapy. It is also used in high-throughput screening assays to identify potential inhibitors or enhancers of tPA activity. In clinical settings, tPA is used as a thrombolytic agent to treat acute ischemic stroke by dissolving blood clots and restoring blood flow to the brain .

Mechanism of Action

tPA exerts its effect by binding to fibrin in a blood clot and converting the entrapped plasminogen to plasmin. Plasmin then degrades the fibrin matrix of the clot, leading to clot dissolution. This process is crucial for maintaining vascular patency and preventing conditions such as stroke and myocardial infarction .

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