An antimicrobial peptide Ar-AMP from amaranth (Amaranthus retroflexus L.) seeds

A 30-residue antimicrobial peptide Ar-AMP with six cysteine residues was isolated from the seeds of amaranth Amaranthus retroflexus L. In spite of the fact that seeds were collected in 1967 and lost their germination capacity, Ar-AMP retained its biological activities.