The Purification and Characterization of a Novel Lipid Transfer Protein from Caryopsis of Barnyard Grass (Echinochloa crusgalli)

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Abstract

A novel lipid transfer protein called Ec-LTP was isolated from resting caryopsis of weed barnyard grass Echinochloa crusgalli (L.) Beauv.; its molecular weight, amino acid content and N-terminal amino acid sequence were determined. Ec-LTP was a 9150 D protein, containing eight cysteine residues, which formed four disulfide bonds. The isolated protein could significantly inhibit the development of pathogenic fungi Phytophthora infestans and Helminthosporium sativum, causing the late blight of potato and tomato and the root rot of herbs, respectively.

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