Cyanopeptolins (CPs) are a class of oligopeptides produced by Microcystis and Planktothrix algae strains, and can be neurotoxic.
[1][2][3] The production of cyanopeptolins occurs through nonribosomal peptides synthases (NRPS).
[4] CPs are, in general, a six-residue peptide formed into a ring by a beta-lactone bridge,[5] making them chemically depsipeptides (peptidolactones).
Others, such as aeruginopeptins, micropeptins, microcystilide, nostopeptins, and oscillapeptins,[6] refer to the organism the substance is originally found in.
[6] Cyanopeptolin CP1020 exposure in zebrafish affected pathways related to DNA damage, the circadian rhythm and response to light.