PAMP-12 (human, mouse, rat, porcine, bovine) (trifluoroacetate salt)

Proadrenomedullin N-terminal 12 peptide (PAMP-12) is an endogenous peptide fragment found in the adrenal medulla that corresponds to amino acids 9-20 of human PAMP-20 and is involved in hypotension. It is an agonist of MAS-related G protein-coupled receptor family member X2 (MRGPRX2). PAMP-12 inhibits forskolin-induced cAMP accumulation in CHO cells expressing human MRGPRX2 (EC50 = 57.2 nM). It selectively induces calcium mobilization in CHO cells expressing MRGPRX2 (EC50 = 41 nM) over those expressing MRGPRX1, MRGPRX3, or MRGPRX4 at 1 µM. PAMP-12 is an antagonist of nicotinic acetylcholine receptors (nAChRs) that inhibits carbachol-induced catecholamine release (IC50 = 1.3 µM) and calcium and sodium influx (IC50s = 0.39 and 0.87 µM, respectively), but not histamine-induced catecholamine release or calcium and sodium influx (IC50s = >1 µM for all), in primary bovine adrenal chromaffin cells. It reduces mean arterial blood pressure in normotensive rats when administered at doses ranging from 10 to 50 nmol/kg.Formal Name: L-phenylalanyl-L-arginyl-L-lysyl-L-lysyl-L-tryptophyl-L-asparaginyl-L-lysyl-L-tryptophyl-L-alanyl-L-leucyl-L-seryl-L-argininamide, trifluoroacetate salt. Synonyms: PAMP (9-20), Proadrenomedullin N-terminal 12 Peptide. Molecular Formula: C77H119N25O14 . XCF3COOH. Formula Weight: 1618.9. Purity: >95%. Formulation: (Request formulation change), A solid. Peptide Sequence: FRKKWNKWALSR-NH2. Solubility: DMF: 50 mg/ml, DMSO: 10 mg/ml, PBS (pH 7.2): 10 mg/ml. SMILES: N[C@@H](CC1=CC=CC=C1)C(N[C@@H](CCCNC(N)=N)C(N[C@@H](CCCCN)C(N[C@@H](CCCCN)C(N[C@H](C(N[C@@H](CC(N)=O)C(N[C@@H](CCCCN)C(N[C@H](C(N[C@@H](C)C(N[C@@H](CC(C)C)C(N[C@@H](CO)C(N[C@H](C(N)=O)CCCNC(N)=N)=O)=O)=O)=O)CC2=CNC3=CC=CC=C23)=O)=O)=O)CC4=CNC5=CC=CC=C45)=O)=O)=O)=O.OC(C(F)(F)F)=O. InChi Code: InChI=1S/C77H119N25O14.C2HF3O2/c1-43(2)35-58(72(113)102-62(42-103)75(116)93-53(64(83)105)28-17-33-88-76(84)85)98-65(106)44(3)92-71(112)59(37-46-40-90-51-23-9-7-21-48(46)51)99-70(111)56(27-13-16-32-80)97-74(115)61(39-63(82)104)101-73(114)60(38-47-41-91-52-24-10-8-22-49(47)52)100-69(110)55(26-12-15-31-79)96-67(108)54(25-11-14-30-78)95-68(109)57(29-18-34-89-77(86)87)94-66(107)50(81)36-45-19-5-4-6-20-45,3-2(4,5)1(6)7/h4-10,19-24,40-41,43-44,50,53-62,90-91,103H,11-18,25-39,42,78-81H2,1-3H3,(H2,82,104)(H2,83,105)(H,92,112)(H,93,116)(H,94,107)(H,95,109)(H,96,108)(H,97,115)(H,98,106)(H,99,111)(H,100,110)(H,101,114)(H,102,113)(H4,84,85,88)(H4,86,87,89),(H,6,7)/t44-,50-,53-,54-,55-,56-,57-,58-,59-,60-,61-,62-,/m0./s1. InChi Key: VZHUBJMTILFZGZ-DRWCHAHRSA-N.