... RochatH, Harvey AL, Montenay-Garestier T & Menez A(1990) Delineation of the functional site of a snakevenom cardiotoxin: preparation, structure, and function of monoacetylated derivatives. ... themembrane of cells.Inhibitory effects of VVA1 on the hemolytic and cytotoxic activity of VVA2The effects of VVA1 on the hemolytic activity of VVA2 were studied by incubation of human red ... this occurs via the interaction of one molecule of volvatoxin A1, which contains two amphipathic a-helices,with two molecules of volvatoxin A2, each of which contains one amphi-pathic a-helix....