M40 (trifluoroacetate salt)

M40 is a chimeric galanin-derived peptide and galanin-1 (GAL1) receptor antagonist and GAL2 receptor agonist (Kis = 2.4 and 4.07 nM, respectively). It is selective for the GAL1 and GAL2 receptors over the GAL3 receptor (Ki = 288 nM). M40 induces inositol phosphate accumulation in CHO cells expressing the human GAL2 receptor (EC50 = 16.2 nM) and inhibits forskolin-induced cAMP accumulation in RIN-m5F pancreatic beta-cells when used at concentrations of 10 or 100 nM. In vivo, M40 (9.36 nmol/animal, i.c.v.) reverses galanin-induced inhibition of scopolamine-induced hippocampal acetylcholine (ACh) release in conscious rats. M40 reduces galanin-induced increases in food intake in rats. It improves cardiac function and decreases cardiac fibrosis in a rat model of heart failure induced by sustained coronary artery ligation when administered at a dose of 30 nmol/kg. M40 (20 µg/animal) increases the intromission frequency and ejaculation latency in sexually sluggish male mice.Formal Name: glycyl-L-tryptophyl-L-threonyl-L-leucyl-L-asparaginyl-L-seryl-L-alanylglycyl-L-tyrosyl-L-leucyl-L-leucylglycyl-L-prolyl-L-prolyl-L-prolyl-L-alanyl-L-leucyl-L-alanyl-L-leucyl-L-alaninamide, trifluoroacetate salt. Synonyms: Galanin-(1-12)-Pro3-(Ala-Leu)2-Ala amide. Molecular Formula: C94H145N23O24 . XCF3COOH. Formula Weight: 1981.3. Purity: >95%. Formulation: (Request formulation change), A solid. Peptide Sequence: GYTLNSAGYLLGPPPALALA-NH2. Solubility: Water: Soluble. SMILES: [H]NCC(N[C@H](C(N[C@]([C@@H](C)O)([H])C(N[C@@H](CC(C)C)C(N[C@@H](CC(N)=O)C(N[C@@H](CO)C(N[C@H](C(NCC(N[C@H](C(N[C@@H](CC(C)C)C(N[C@@H](CC(C)C)C(NCC(N1CCC[C@H]1C(N2CCC[C@H]2C(N3CCC[C@H]3C(N[C@H](C(N[C@@H](CC(C)C)C(N[C@H](C(N[C@@H](CC(C)C)C(N[C@H](C(N)=O)C)=O)=O)C)=O)=O)C)=O)=O)=O)=O)=O)=O)=O)CC4=CC=C(O)C=C4)=O)=O)C)=O)=O)=O)=O)=O)CC5=CNC6=C5C=CC=C6)=O.O=C(O)C(F)(F)F. InChi Code: InChI=1S/C94H145N23O24.C2HF3O2/c1-46(2)33-61(82(129)100-44-76(124)115-30-19-24-71(115)93(140)117-32-20-25-72(117)94(141)116-31-18-23-70(116)91(138)104-54(14)81(128)108-63(35-48(5)6)84(131)103-53(13)80(127)107-62(34-47(3)4)83(130)101-51(11)78(97)125)109-85(132)64(36-49(7)8)110-87(134)66(38-56-26-28-58(120)29-27-56)106-75(123)43-99-79(126)52(12)102-90(137)69(45-118)113-88(135)68(40-73(96)121)111-86(133)65(37-50(9)10)112-92(139)77(55(15)119)114-89(136)67(105-74(122)41-95)39-57-42-98-60-22-17-16-21-59(57)60,3-2(4,5)1(6)7/h16-17,21-22,26-29,42,46-55,61-72,77,98,118-120H,18-20,23-25,30-41,43-45,95H2,1-15H3,(H2,96,121)(H2,97,125)(H,99,126)(H,100,129)(H,101,130)(H,102,137)(H,103,131)(H,104,138)(H,105,122)(H,106,123)(H,107,127)(H,108,128)(H,109,132)(H,110,134)(H,111,133)(H,112,139)(H,113,135)(H,114,136),(H,6,7)/t51-,52-,53-,54-,55+,61-,62-,63-,64-,65-,66-,67-,68-,69-,70-,71-,72-,77-,/m0./s1. InChi Key: FRCHWUHLLBJWIS-NKMYXGHHSA-N.