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Proamanullin
Names
	Other names 2-L-Proline-3-isoleucine-alpha-amanitin
Identifiers
CAS Number	54532-46-6 ;
3D model (JSmol)	Interactive image;
ChemSpider	48308194 ;
PubChem CID	171350;
CompTox Dashboard (EPA)	DTXSID501028141 ;
	InChI InChI=1S/C39H54N10O11S/c1-5-18(3)31-36(57)42-15-29(52)43-26-17-61(60)38-22(21-10-9-20(50)12-23(21)46-38)13-24(33(54)41-16-30(53)47-31)44-37(58)32(19(4)6-2)48-35(56)27-8-7-11-49(27)39(59)25(14-28(40)51)45-34(26)55/h9-10,12,18-19,24-27,31-32,46,50H,5-8,11,13-17H2,1-4H3,(H2,40,51)(H,41,54)(H,42,57)(H,43,52)(H,44,58)(H,45,55)(H,47,53)(H,48,56)/t18-,19-,24-,25-,26-,27-,31-,32-,61?/m0/s1 Key: CTYHFRWAIRSHQT-YRDOMICZSA-N ; InChI=1/C39H54N10O11S/c1-5-18(3)31-36(57)42-15-29(52)43-26-17-61(60)38-22(21-10-9-20(50)12-23(21)46-38)13-24(33(54)41-16-30(53)47-31)44-37(58)32(19(4)6-2)48-35(56)27-8-7-11-49(27)39(59)25(14-28(40)51)45-34(26)55/h9-10,12,18-19,24-27,31-32,46,50H,5-8,11,13-17H2,1-4H3,(H2,40,51)(H,41,54)(H,42,57)(H,43,52)(H,44,58)(H,45,55)(H,47,53)(H,48,56)/t18-,19-,24-,25-,26-,27-,31-,32-,61?/m0/s1 Key: CTYHFRWAIRSHQT-YRDOMICZBU;
	SMILES O=C(NCC(N[C@@](C(NCC(N[C@@H](C3)C(N[C@@H](CC(N)=O)C(N5[C@H]4CCC5)=O)=O)=O)=O)([H])[C@@H](C)CC)=O)[C@H](CC1=C(S3=O)NC2=C1C=CC(O)=C2)NC([C@@]([C@@H](C)CC)([H])N[C@@]4=O)=O;
Properties
Chemical formula	C39H54N10O11S
Molar mass	870.97 g/mol
Appearance	Colorless, odorless
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Promanullin is a cyclic nonribosomal peptide. It is an amatoxin, all of which are found in the mushroom genus Amanita.

Toxicology

Like other amatoxins, proamanullin is an inhibitor of RNA polymerase II. Promanullin has a specific attraction to the enzyme RNA polymerase II. Upon ingestion, it binds to the RNA polymerase II enzyme, effectively causing cytolysis of hepatocytes (liver cells).^[1]

References

^ Cochet-Meilhac M, Chambon P (June 1974). "Animal DNA-dependent RNA polymerases. 11. Mechanism of the inhibition of RNA polymerases B by amatoxins". Biochim. Biophys. Acta. 353 (2): 160–84. doi:10.1016/0005-2787(74)90182-8. PMID 4601749.