γ-amanitin γ-amanitin γ-amanitin (gamma-amanitin) is a cyclic peptide of eight amino acids. it is an amatoxin, a group of toxins isolated from and found in several members of the mushroom genus amanita, one being the death cap (amanita phalloides) as well as the destroying angel, a complex of similar species, principally a. virosa and a. bisporigera. the compound is highly toxic, inhibits rna polymerase ii, disrupts synthesis of mrna, and can be fatal. γ-amanitin identifiers cas number 21150-23-2 y 3d model (jsmol) interactive image chemspider 26234940 y pubchem cid 26116 unii zoz8ilm7wm y comptox dashboard (epa) dtxsid10897721 inchi inchi=1s/c39h54n10o13s/c1-5-16(2)31-36(59)42-12-29(54)43-26-15-63(62)38-22(21-7-6-19(51)8-23(21)46-38)10-24(33(56)41-13-30(55)47-31)44-37(60)32(17(3)18(4)50)48-35(58)27-9-20(52)14-49(27)39(61)25(11-28(40)53)45-34(26)57/h6-8,16-18,20,24-27,31-32,46,50-52h,5,9-15h2,1-4h3,(h2,40,53)(h,41,56)(h,42,59)(h,43,54)(h,44,60)(h,45,57)(h,47,55)(h,48,58)/t16-,17-,18-,20+,24-,25-,26-,27-,31-,32-,63?/m0/s1 ykey: wvhgjjrmkgdtec-zuroawgwsa-n yinchi=1/c39h54n10o13s/c1-5-16(2)31-36(59)42-12-29(54)43-26-15-63(62)38-22(21-7-6-19(51)8-23(21)46-38)10-24(33(56)41-13-30(55)47-31)44-37(60)32(17(3)18(4)50)48-35(58)27-9-20(52)14-49(27)39(61)25(11-28(40)53)45-34(26)57/h6-8,16-18,20,24-27,31-32,46,50-52h,5,9-15h2,1-4h3,(h2,40,53)(h,41,56)(h,42,59)(h,43,54)(h,44,60)(h,45,57)(h,47,55)(h,48,58)/t16-,17-,18-,20+,24-,25-,26-,27-,31-,32-,63?/m0/s1key: wvhgjjrmkgdtec-zuroawgwbf smiles cc(c)1c(=o)ncc(=o)n2cs(=o)c3c(c4ccc(cc43)o)c(c(=o)ncc(=o)n1)nc(=o)(nc(=o)5c(cn5c(=o)(nc2=o)cc(=o)n)o)(c)(c)o properties chemical formula c39h54n10o13s molar mass 902.97 g/mol except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). y verify (what is yn ?) infobox references