4V1V:
reference: Structural analysis of leader peptide binding enables leader-free cyanobactin processing., Koehnke J, Mann G, Bent AF, Ludewig H, Shirran S, Botting C, Lebl T, Houssen WE, Jaspars M, Naismith JH, Nat Chem Biol. 2015 Jun 22. doi: 10.1038/nchembio.1841. PMID: 26098679

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