title: Kok's oxygen clock: What makes it tick? The structure of P680 and consequences of its oxidizing power.
abstract: New insights in the structure of P680, the primary electron donor in Photosystem II, are summarized and the implications of its oxidizing power for energy transfer and singlet oxygen production are discussed.
authors: Department of Biophysics, Huygens Laboratory of the State University, P. O. Box 9504, 2300 RA, Leiden, The Netherlands.
authors: H J
authors: HJ
authors: van Gorkom
authors: J P
authors: JP
authors: Schelvis