They are named pebtaibols due to them being peptides containing α-aminoisobutyric acid (Aib) and ending in an alcohol.[1] They are produced by certain fungi, mainly in the genus Trichoderma, as secondary metabolites which function as antibiotics and antifungal agents.[1][2] Some are referred to as trichorzianines.[3] They are amphipathic which allows them to form voltage-dependent ion channels in cell membranes which create holes in the membrane making them leaky and leading to the death of the cells.