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. 2020 Jan 31;25(3):625. doi: 10.3390/molecules25030625

Figure 3.

Figure 3

Natural products present in both cyanobacteria and marine eukaryotes. (A) Structure of the mycosporine-like amino acid (MAA) shinorine produced by Anabaena variabilis and Nostoc punctiforme. (B) Biosynthesis and BGC of shinorine from Anabaena variabilis and Nostoc punctiforme [59]. SH 7-P; Sedoheptulose 7-phosphate. (C) The MAA Porphyra-334 is produced in the dinoflagellate Symbiodinium SymA and the BGC was identified, while Symbiodinium SymC does not produce MAAs and no BGC is found within the genome [56]. (D) Structure of saxitoxin produced by Cylindrospermopsis raciborskii T3. (E) The BGC for saxitoxin (stx) and resolved biosynthetic steps [68,69].