INTERPRETATION OF THE POLARIZED ELECTRON-PARAMAGNETIC RESONANCE SIGNAL OF PLANT PHOTOSYSTEM-I

Journal article

Attempts to interpret the polarized EPR spectrum of Photosystem I of plant photosynthesis are described. Electron spin polarization is assumed to arise in the primary radical pair P-700+ A-0 and to be passed to a secondary acceptor A1 by rapid electron transfer. By including the dipolar interaction between P-700+ and A-0 and an anisotropic g-tensor for A-1 EPR spectra similar to the experimental lineshape can be simulated. The resulting magnetic parameters are discussed in the light of a recent suggestion that A-1 may be a semiquinone. © 1986.

Authors: Broadhurst, R; Hoff, A; Hore, P

• Publication status: Published
• Journal: BIOCHIMICA ET BIOPHYSICA ACTA
• Volume: 852
• Issue: 1
• Pages: 106-111
• Publication date: 1986-11-05
• DOI: 10.1016/0005-2728(86)90062-9
• ISSN: 0006-3002
• Language: English
• Keywords: Photosystem I; ESR