3KZI CRYSTAL STRUCTURE OF MONOMERIC FORM OF CYANOBACTERIAL PHOTOSYSTEM II ELECTRON TRANSPORT, ELECTRON TRANSPORT PHOTOSYSTEM, PS II, PS2, MEMBRANE COMPLEX, TRANSMEMBRANE ALPHA-HELIX, IRON, METAL-BINDING, PHOTOSYNTHESIS, PHOTOSYSTEM II, THYLAKOID, HEME, REACTION CENTER, MANGANESE