has role mycotoxin organic disulfide immunosuppressive agent antifungal agent organic heterotetracyclic compound dipeptide proteasome inhibitor gliotoxin Aspergillin CHEBI:5385 A pyrazinoindole with a disulfide bridge spanning a dioxo-substituted pyrazine ring; mycotoxin produced by several species of fungi. chebi_ontology pyrazinoindole EC 2.5.1.58 (protein farnesyltransferase) inhibitor