Alpha-conotoxin GI

α-conotoxin GI, a conopeptide isolated from the venom of the cone snail Conus geographus, is a competitive antagonist of the muscle-type nicotinic acetylcholine receptors (nAChR) such as α-conotoxin MI or d-Turbocurarine.

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CAT#	C27003
CAS	76862-65-2
Synonyms/Alias	alpha-conotoxin GI
Chemical Name	(4S)-4-amino-5-[[(1R,7S,10S,13S,16S,19R,24R,27S,33S,36S,43R)-27-(2-amino-2-oxoethyl)-19-carbamoyl-7-[3-(diaminomethylideneamino)propyl]-16-(hydroxymethyl)-13-[(4-hydroxyphenyl)methyl]-10-(1H-imidazol-5-ylmethyl)-36-methyl-2,5,8,11,14,17,25,28,34,37,44-undecaoxo-21,22,40,41-tetrathia-3,6,9,12,15,18,26,29,35,38,45-undecazatricyclo[22.14.7.029,33]pentatetracontan-43-yl]amino]-5-oxopentanoic acid
M.F/Formula	C55H80N20O18S4
M.W/Mr.	1437.6
Sequence	One Letter Code: ECCNPACGRHYSC Three Letter Code: H-Glu-Cys(1)-Cys(2)-Asn-Pro-Ala-Cys(1)-Gly-Arg-His-Tyr-Ser-Cys(2)-NH2
Application	ADCs Cytotoxin
Appearance	White lyophilized solid
Activity	Antagonist

CAT#	Product Name	Inquiry
C27008	w-Agatoxin-TK	Inquiry
C27012	μ-Conotoxin GIIIA	Inquiry
C27004	Alpha-conotoxin GIA	Inquiry
C27007	a-Conotoxin IMI	Inquiry
C27013	μ-Conotoxin GIIIB	Inquiry

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Storage	Stable in freeze-dried state; keep in dark and cold place; in solution, keep at -24 °C.
Solubility	Water and saline buffer
InChI	InChI=1S/C55H80N20O18S4/c1-25-44(83)72-36-21-95-97-22-37(73-45(84)29(56)10-11-42(80)81)52(91)74-38(51(90)69-33(16-40(57)78)54(93)75-13-3-5-39(75)53(92)65-25)23-96-94-20-35(43(58)82)71-50(89)34(19-76)70-48(87)31(14-26-6-8-28(77)9-7-26)67-49(88)32(15-27-17-61-24-64-27)68-47(86)30(4-2-12-62-55(59)60)66-41(79)18-63-46(36)85/h6-9,17,24-25,29-39,76-77H,2-5,10-16,18-23,56H2,1H3,(H2,57,78)(H2,58,82)(H,61,64)(H,63,85)(H,65,92)(H,66,79)(H,67,88)(H,68,86)(H,69,90)(H,70,87)(H,71,89)(H,72,83)(H,73,84)(H,74,91)(H,80,81)(H4,59,60,62)/t25-,29-,30-,31-,32-,33-,34-,35-,36-,37-,38-,39-/m0/s1
InChI Key	HWYLVHOPQMLNRJ-NAKBKFBQSA-N
Canonical SMILES	CC1C(=O)NC2CSSCC(C(=O)NC(CSSCC(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)CNC2=O)CCCN=C(N)N)CC3=CN=CN3)CC4=CC=C(C=C4)O)CO)C(=O)N)C(=O)NC(C(=O)N5CCCC5C(=O)N1)CC(=O)N)NC(=O)C(CCC(=O)O)N
Isomeric SMILES	C[C@H]1C(=O)N[C@H]2CSSC[C@@H](C(=O)N[C@@H](CSSC[C@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)CNC2=O)CCCN=C(N)N)CC3=CN=CN3)CC4=CC=C(C=C4)O)CO)C(=O)N)C(=O)N[C@H](C(=O)N5CCC[C@H]5C(=O)N1)CC(=O)N)NC(=O)[C@H](CCC(=O)O)N