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Proteinase-activated receptor-1 (extracellular) (human) polyclonal antibody

BML-SA650-0050 50 µl 403.00 USD
BML-SA650-0200 200 µl 504.00 USD
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Product Details

Alternative Name:PAR-1
Immunogen:Synthetic peptide corresponding to aa 61-76 of human PAR-1 (proteinase-activated receptor-1).
UniProt ID:P25116
Species reactivity:Human
Applications:Flow Cytometry, ICC, IHC, WB
Formulation:Lyophilized. In PBS, pH 7.4, containing 1% BSA, and 0.025% sodium azide.
Shipping:Blue Ice
Long Term Storage:-20°C
Scientific Background:PAR-1 belongs to a four member family of G protein-coupled receptors (PAR-1 to -4) that are activated as a result of proteolytic cleavage by certain serine proteases, hence their name. In this modality of activation, a specific proteinase cleaves the PAR receptor within a defined sequence in its extracellular N-terminal domain. This cleavage results in the creation of a new N-terminal sequence (tethered ligand), which subsequently binds to a site in the second extracellular loop of the same receptor. This binding results in the coupling of the receptor to G proteins and in the activation of several signal transduction pathways1-3 Different PARs are activated by different proteinases. Hence, PAR-1 is activated by thrombin (and is also known as the thrombin receptor), as are PAR-3 and PAR-4, while PAR-2 is activated by trypsin1-3 PAR-1 can be also cleaved and activated by other proteinases such as plasmin, Factor Xa, and cathepsin G PAR-1 signals through several G proteins including Gαq, Gαi, and Gα12/13, resulting in the activation of several transduction pathways including Ca2+ mobilization, Rho and Rac signaling, and MAPK activation1-3 PAR-1 is expressed in several cell types including platelets, leukocytes, vascular endothelial cells, gastrointestinal epithelial cells, myocytes, and neurons. The best studied physiological function of PAR-1 is its involvement in the coagulation cascade. Thrombin activates the receptor on the surface of platelets inducing platelet aggregation, granular secretion, and procoagulant activity. PAR-1 also plays a role in vascular ontogenesis. PAR-1 also plays important roles in tumor growth and metastasis. PAR-1 is upregulated in several human cancers as are several proteinases such as plasmin and matrix metalloproteases that act as PAR-1 ligands, thereby creating an autocrine loop. PAR-1 activation in cancer cells transmits mitogenic signals through the activation of the erk1/2 pathway and is involved in tumor spread via its pro-angiogenic activity.4
Regulatory Status:RUO - Research Use Only