The pulsed electron–electron double resonance and “2+1” electron spin echo study of the oriented oxygen-evolving and Mn-depleted preparations of photosystem II

DOI PDF 1 Citations
  • Andrei V. Astashkin
    Faculty of Science, Kwansei Gakuin University, Nishinomiya 662, Japan
  • Hideyuki Hara
    Faculty of Science, Kwansei Gakuin University, Nishinomiya 662, Japan
  • Asako Kawamori
    Faculty of Science, Kwansei Gakuin University, Nishinomiya 662, Japan

Description

<jats:p>A “2+1” electron spin echo method has been applied to measure the angular orientation of the radius-vector RDZ joining the redox-active tyrosine residues YD and YZ in membrane-oriented Mn-depleted preparation of photosystem II. The angle between RDZ and the normal to the photosystem II membrane was determined to be 100°±2°, where the angle of 0° corresponds to the direction from YD towards the stromal side of the membrane, along the membrane normal. A pulsed electron–electron double resonance method has been used to obtain similar information for YD and Mn cluster in oriented sample of oxygen-evolving photosystem II. The angle between the radius-vector from YD to the Mn cluster, RDMn, and the membrane normal was found to be 110°±2°.</jats:p>

Journal

Citations (1)*help

See more

Details 詳細情報について

Report a problem

Back to top