PAR-3 Agonist (Human) TFRGAP-amide


Representing the activating sequence of the “tethered ligand” of protease cleaved human PAR-3.

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Catalogue number crb1000560
Sequence (one letter code) TFRGAP-amide
Sequence (three letter code) H-Thr-Phe-Arg-Gly-Ala-Pro-NH2
Purity >95%
Molecular Weight 646.4

Zhang, H., Zeng, X. and He, S. (2014). Evaluation on Potential Contributions of Protease Activated Receptors Related Mediators in Allergic Inflammation. Mediators Inflamm, 2014, 1-20. PMID: 24876677

Protease activated receptors (PARs) are a distinctive four-member family of seven transmembrane G protein-coupled receptors (GPCRs) widely expressed in inflammatory cells. PARs are cleaved by certain serine proteases to expose a tethered ligand domain, this ligand domain then binds to and activates the receptors to initiate multiple signalling cascades. These PAR-activating proteases therefore represent PAR agonists. This PAR-3 agonist peptide represents the sequence of the “tethered ligand” and is therefore capable of activating the receptor independently of N-terminal proteolysis.

 PAR-3 is required for intercellular adhesion molecule 1 (ICAM-1) expression in endothelial cells and PAR-3 cooperates with PAR-1 to mediate the effect of thrombin on cytokine production and vascular cell adhesion molecule (VCAM- 1) expression

PAR-3 Agonist (Human)

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