astressin 2B   Click here for help

GtoPdb Ligand ID: 10335

Synonyms: Astressin2-B | astressin2-B | cyclo(31-34)[DPhe(11),His(12),C(alpha)MeLeu(13,39),Nle(17),Glu(31),Lys(34)]Ac-sauvagine(8-40) | peptide 20 [PMID: 12361401]
Compound class: Peptide
Comment: Astressin 2B is a potent and selective CRF2 antagonist [1].
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2D Structure
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SMILES / InChI / InChIKey
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Canonical SMILES NCCCCC(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)NC1CCC(=O)NCCCCC(NC(=O)C(NC(=O)C(NC1=O)CC(=O)N)CC(=O)N)C(=O)NC(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)NC(C(CC)C)C(=O)N)(CC(C)C)C)CC(=O)O)CC(C)C)CC(C)C)CC(C)C)C)CCC(=O)N)CCC(=O)N)CCCCN)CCC(=O)O)NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(C(CC)C)NC(=O)C(NC(=O)C(C(CC)C)NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C)CC(=O)O)CC(C)C)CO)Cc1ccccc1)Cc1c[nH]cn1)(CC(C)C)C)CC(C)C)CCCNC(=N)N)CCCCN)CCCC)CCC(=O)O)CCC(=O)O)CCCCN)CCC(=O)N)CCC(=O)O
Isomeric SMILES NCCCC[C@@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H]1CCC(=O)NCCCC[C@H](NC(=O)[C@@H](NC(=O)[C@@H](NC1=O)CC(=O)N)CC(=O)N)C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@@](C(=O)N[C@@H]([C@H](CC)C)C(=O)N)(CC(C)C)C)CC(=O)O)CC(C)C)CC(C)C)CC(C)C)C)CCC(=O)N)CCC(=O)N)CCCCN)CCC(=O)O)NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@H]([C@H](CC)C)NC(=O)[C@@H](NC(=O)[C@H]([C@H](CC)C)NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@](NC(=O)[C@@H](NC(=O)[C@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)C)CC(=O)O)CC(C)C)CO)Cc1ccccc1)Cc1c[nH]cn1)(CC(C)C)C)CC(C)C)CCCNC(=N)N)CCCCN)CCCC)CCC(=O)O)CCC(=O)O)CCCCN)CCC(=O)N)CCC(=O)O
InChI InChI=1S/C183H307N49O53/c1-26-30-47-106(203-151(256)107(48-34-39-70-184)204-155(260)112(53-44-75-198-181(194)195)209-169(274)125(80-96(13)14)227-179(284)182(24,87-97(15)16)231-175(280)127(82-105-89-196-91-199-105)222-170(275)126(81-104-45-32-31-33-46-104)221-174(279)132(90-233)226-168(273)124(79-95(11)12)220-173(278)130(85-143(249)250)201-103(23)234)163(268)228-146(100(20)28-3)178(283)216-120(61-69-142(247)248)164(269)229-147(101(21)29-4)177(282)215-119(60-68-141(245)246)161(266)207-109(50-36-41-72-186)153(258)212-115(56-64-135(190)237)158(263)214-118(59-67-140(243)244)160(265)206-110(51-37-42-73-187)154(259)213-117(58-66-139(241)242)159(264)205-108(49-35-40-71-185)152(257)211-114(55-63-134(189)236)157(262)210-113(54-62-133(188)235)150(255)200-102(22)149(254)202-116-57-65-138(240)197-74-43-38-52-111(208-171(276)128(83-136(191)238)224-172(277)129(84-137(192)239)223-162(116)267)156(261)217-121(76-92(5)6)165(270)218-122(77-93(7)8)166(271)219-123(78-94(9)10)167(272)225-131(86-144(251)252)176(281)232-183(25,88-98(17)18)180(285)230-145(148(193)253)99(19)27-2/h31-33,45-46,89,91-102,106-132,145-147,233H,26-30,34-44,47-88,90,184-187H2,1-25H3,(H2,188,235)(H2,189,236)(H2,190,237)(H2,191,238)(H2,192,239)(H2,193,253)(H,196,199)(H,197,240)(H,200,255)(H,201,234)(H,202,254)(H,203,256)(H,204,260)(H,205,264)(H,206,265)(H,207,266)(H,208,276)(H,209,274)(H,210,262)(H,211,257)(H,212,258)(H,213,259)(H,214,263)(H,215,282)(H,216,283)(H,217,261)(H,218,270)(H,219,271)(H,220,278)(H,221,279)(H,222,275)(H,223,267)(H,224,277)(H,225,272)(H,226,273)(H,227,284)(H,228,268)(H,229,269)(H,230,285)(H,231,280)(H,232,281)(H,241,242)(H,243,244)(H,245,246)(H,247,248)(H,249,250)(H,251,252)(H4,194,195,198)/t99-,100-,101-,102-,106-,107-,108-,109-,110-,111-,112-,113-,114-,115-,116-,117-,118-,119-,120-,121-,122-,123-,124-,125-,126+,127-,128-,129-,130-,131-,132-,145-,146-,147-,182+,183+/m0/s1
InChI Key IVIBPRHVUKMKSX-YJHXGIRISA-N
Selectivity at GPCRs
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
CRF2 receptor Primary target of this compound Hs Antagonist Antagonist 8.9 pIC50 - 1
pIC50 8.9 (IC50 1.3x10-9 M) [1]
CRF1 receptor Hs Antagonist Antagonist <6.3 pIC50 - 1
pIC50 <6.3 (IC50 >5x10-7 M) [1]