Site-Directed Mutations of Two Histidine Residues in the D 2 Protein Inactivate and Destabilize Photosystem II in the Cyanobacterium Synechocystis 6803

Abstract

Site-Directed M utagenesis, Herbicide Binding, Photosystem II Proteins, Photosynthesis, Cyanobacteria Site-directed mutations were created in the cyanobacterium Synechocystis 6803 to alter specific histidine residues of the photosystem II (PS II) D 2 protein. In one mutant (tyr-197). the his-197 residue was replaced by tyrosine, in another mutant (asn-214… (More)

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