Distribution and amino-acid sequence identity of 13 gene clusters involved in the biosynthesis of secondary metabolites in the twelve Microcystis genomes (including the two previously available, PCC 7806 and NIES-843).

Mcy: Microcystins; Aer: Aeruginosins; mcn: Cyanopeptolins; Mic: Microginins; Apt: Anabaenopeptins; mca: Cyanobactins; mdn: Microviridins; PKSI iterat: PKSI iterative; % of genome: Proportion of genome; Nb clusters/strain: Number of clusters per strain. Aa seq ident: Amino-acid sequence identity; Ref.: Reference strain used for the estimation of the sequence identity.£: incomplete gene cluster;*: on adjacent contigs highly fragmented genome or region;$: metabolite detected in previous studies ([58]; Welker, unpublished);#: probably encodes for another cyanobactin; (+): positive detection of the metabolite in the strain; (−): negative detection of the metabolite in the strain; na: not analyzed.