Structural and functional studies of a phosphatidic acid-binding antifungal plant defensin MtDef4: identification of an RGFRRR motif governing fungal cell entry. oleh Uma Shankar Sagaram, Kaoutar El-Mounadi, Garry W Buchko, Howard R Berg, Jagdeep Kaur, Raghu S Pandurangi, Thomas J Smith, Dilip M Shah