SLIGKV-NH2

Protease-Activated Receptor-2, amide (SLIGKV-NH2) is a highly potent protease-activated receptor-2 (PAR2) activating peptide.

Signaling Pathways >> GPCR/G Protein >> Protease-Activated Receptor (PAR)

Research Areas >> Cancer

Peptides

PAR2[1]

The PAR2-activating peptides used are: SLIGKV-OH, SLIGRL-OH, SLIGKV-NH2, SLIGRL-NH2. The synthetic agonist peptides mimicking the tethered ligand of PAR2, Ser-Leu-Ile-Gly-Lys-Val (SLIGKV-OH), Ser-Leu-Ile-Gly-Arg-Leu (SLIGRL-OH) and their amidated forms Ser-Leu-Ile-Gly-Lys-Val-amide (SLIGKV-NH2) Ser-Leu-Ile-Gly-Arg-Leu-amide (SLIGRL-NH2) have also been demonstrated being able to activate the receptor without enzymatic cleavage, therefore, have been utilised as biological tools to examine physiological functions of PAR2. Protease-Activated Receptor-2, amide is one of a four family subgroup of G-protein-coupled receptors (GPCRs), called PARs. Protease-activated receptors are distinguished from other GPCRs through their unique proteolytic mechanism of activation. For PAR2, activating proteases, such as trypsin, tryptase and coagulation factors VIIa and Xa, cleave a specific extracellular amino-terminal domain of the receptor to reveal a "tethered ligand", SLIGKV- and SLIGRL- for human and mouse/rat PAR2, respectively, which subsequently interacts with the activation domain of the receptor, initiating intracellular signaling pathways[1]. The protease-activated receptor-2 (PAR2) has been implicated in the pathogenesis of several inflammatory and autoimmune disorders, and is expressed in a wide variety of human tissues and cells. PAR2 belongs to a family of seven transmembrane domain receptor proteins that are activated by proteolysis. Enzymatic digestion exposes an N-terminus ligand sequence that binds intramolecularly to the activation site on the extracellular loop II, initiating a G-protein-mediated cell-signalling cascade and nuclear factor-kappa B (NF-κB)-regulated gene transcription[2].

[1]. Kanke T, et al. Binding of a highly potent protease-activated receptor-2 (PAR2) activating peptide, [3H]2-furoyl-LIGRL-NH2, to human PAR2. Br J Pharmacol. 2005 May;145(2):255-63.

[2]. Ramelli G, et al. Protease-activated receptor 2 signalling promotes dendritic cell antigen transport and T-cellactivation in vivo. Immunology. 2010 Jan;129(1):20-7.

TRAP-6 | AZ 3451 | AC-55541 | PAR-4 (1-6) amide (mouse) trifluoroacetate salt | TFLLR-NH2 TFA | BMS-986120 | (Ala1)-PAR-4 (1-6) amide (mouse) trifluoroacetate salt | SLIGRL-NH2 2TFA | TRAP-5 trifluoroacetate salt