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Ribbon model of the structure of PBPs. (A): 2V8A, the structure of Thermosynechococcus elongatus allophycocyanin at 3.5 Å, (B): 1HA7, The structure of Spirulina Platensis C-phycocyanin at 2.2 Å resolution., (C): 5NB3, High resolution C-phycoerythrin from marine cyanobacterium Phormidium sp. A09DM.
