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Model of structure of CCD enzymes from cyanobacteria strains. (a) The structure model of CCD7 from Prochlorococcus MIT9312 (PMT9312_0282), (b) the structure model of CCD7 from Nostoc punctiforme ATCC 29133 (Npun_F0298), (c) the structure model of APCO from Cyanothece sp. PCC 7424 (PCC7424_5321), (d) the structure model of CCD1 from Anabaena sp. PCC 7120 (all1106).
