Photosystem II (PSII) is a large membrane protein complex that uses light to split water into molecular oxygen, protons, and electrons. Here we report the (1)H, (15)N and (13)C backbone chemical shift assignments for the Psb27 protein of Photosystem II from Synechocystis PCC 6803. These assignments will now provide the basis for the structural analysis of the Psb27 protein.
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