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freyrasin family ranthipeptide A ranthipeptide is a ribosomally synthesized and post-translationally modified peptide (RiPP) whose linkages from cysteine sulfur atoms are to something besides the alpha carbons of other amino acids. Thus, ranthipeptides differ from sactipeptides (sulfur-to-alpha carbon RiPP peptides). The founding member of this family is freyrasin itself, the PapA protein from Paenibacillus polymyxa (see SUA72395.1). All members so far are encoded next to radical SAM peptide maturases.
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