Spadin (trifluoroacetate salt)

Spadin is an inhibitor of the two-pore domain potassium channel K2P2.1/TREK1 (Ki = 10 nM in homogenates from COS-7 cells expressing K2P2.1/TREK1) that corresponds to amino acids 12-28 of human sortilin, also known as the neurotensin-3 receptor (NTS3). It also binds to sortilin in C13NJ microglial cells (Ki = 8 nM). Spadin inhibits currents induced by arachidonic acid (Cay-90010, Cay-90010.1, Cay-10006607) in COS-7 cells expressing K2P2.1/TREK1 (IC50 = 70.7 nM). It decreases immobility time in the forced swim test in mice.Formal Name: L-tyrosyl-L-alanyl-L-prolyl-L-leucyl-L-prolyl-L-arginyl-L-tryptophyl-L-serylglycyl-L-prolyl-L-isoleucylglycyl-L-valyl-L-seryl-L-tryptophylglycyl-L-leucyl-L-arginine, trifluoroacetate salt. Synonyms: YAPLPRWSGPIGVSWGLR. Molecular Formula: C96H142N26O22 . XCF3COOH. Formula Weight: 2012.3. Purity: >98%. Formulation: (Request formulation change), A solid. Solubility: DMF: 3 mg/ml, DMSO: 5 mg/ml, Ethanol: insol, PBS (pH 7.2): 2 mg/ml. lambdamax: 218 nm. SMILES: O=C(N[C@H](C(N1CCC[C@H]1C(N[C@H](C(N2CCC[C@H]2C(N[C@@H](CCCNC(N)=N)C(N[C@@H](CC3=CNC4=C3C=CC=C4)C(N[C@@H](CO)C(NCC(N5CCC[C@H]5C(N[C@@](C(NCC(N[C@@H](C(C)C)C(N[C@@H](CO)C(N[C@@H](CC6=CNC7=C6C=CC=C7)C(NCC(N[C@H](C(N[C@@H](CCCNC(N)=N)C(O)=O)=O)CC(C)C)=O)=O)=O)=O)=O)=O)([H])[C@@H](C)CC)=O)=O)=O)=O)=O)=O)=O)CC(C)C)=O)=O)C)[C@H](CC8=CC=C(O)C=C8)N[H].OC(C(F)(F)F)=O. InChi Code: InChI=1S/C96H142N26O22.C2HF3O2/c1-10-53(8)79(90(139)107-46-76(127)118-78(52(6)7)91(140)117-71(49-124)86(135)113-67(41-56-43-104-62-22-13-11-20-59(56)62)81(130)106-45-75(126)110-66(38-50(2)3)84(133)112-65(94(143)144)25-16-34-103-96(100)101)119-89(138)72-26-17-35-120(72)77(128)47-108-82(131)70(48-123)116-85(134)68(42-57-44-105-63-23-14-12-21-60(57)63)114-83(132)64(24-15-33-102-95(98)99)111-87(136)74-28-19-37-122(74)93(142)69(39-51(4)5)115-88(137)73-27-18-36-121(73)92(141)54(9)109-80(129)61(97)40-55-29-31-58(125)32-30-55,3-2(4,5)1(6)7/h11-14,20-23,29-32,43-44,50-54,61,64-74,78-79,104-105,123-125H,10,15-19,24-28,33-42,45-49,97H2,1-9H3,(H,106,130)(H,107,139)(H,108,131)(H,109,129)(H,110,126)(H,111,136)(H,112,133)(H,113,135)(H,114,132)(H,115,137)(H,116,134)(H,117,140)(H,118,127)(H,119,138)(H,143,144)(H4,98,99,102)(H4,100,101,103),(H,6,7)/t53-,54-,61-,64-,65-,66-,67-,68-,69-,70-,71-,72-,73-,74-,78-,79-,/m0./s1. InChi Key: BCQNVTHNUJMVMT-JEJDUWLBSA-N.