synthesis in cell free systems. A flower-specific thionin (FST) from Nicotiana tabacum (common tobacco). Antifungal proteins (AFP) from the seeds of Brassicaceae species such as radish, mustard, turnip and Arabidopsis thaliana (thale cress). Inhibitors of insect alpha-amylases from sorghum. Probable protease inhibitor P322 from Solanum tuberosum (potato). A germination-related protein from Vigna unguiculata (cowpea). Anther-specific protein SF18 from sunflower. SF18 is a protein that contains a gamma-thionin domain at its N-terminus and a proline-rich C-terminal domain. Glycine max (soybean) sulfur-rich protein SE60. Vicia faba (broad bean) antibacterial peptides fabatin-1 and -2. Databases A database for antimicrobial peptides, including defensins is available: PhytAMP (http://phytamp.hammamilab.org). References Subfamilies Gamma Purothionin Protein domains Peripheral membrane proteins Defensins