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Figure 1
(a) Chemical structure of crocagin A. (b) Sequence of the crocagin precursor peptide CgnA and the crocagin-biosynthetic gene cluster. The leader peptide is underlined in blue and the core peptide in orange. All genes encoding proteins thought to be involved in crocagin biosynthesis are shown (cgnB–cgnL; cgnMT, methyltransferase). |