Kovalenko I B, Ustinin D M, Grachev N E, Krendeleva T E, Kukarskikh G P, Timofeev K N, Riznichenko G Iu, Grachev E A, Rubin A B
Biological Department, Lomonosov Moscow State University, Vorob'evy Gory, Moscow, 119992 Russia.
Biofizika. 2003 Jul-Aug;48(4):656-65.
The kinetics of photoinduced EPR I signals at different concentrations of ferredoxin was studied on isolated pea chloroplasts. A kinetic model of ferredoxin-dependent electron transport around photosystem I was suggested. A multiparticle model was constructed, which makes it possible to "directly" model the processes of electron transfer in multiprotein complexes and limited diffusion in different compartments of the system (stroma, lumen, and intermembrane space). A comparison of the kinetic and "direct" models revealed an important role of spatial organization of the system in the kinetics of redox turnover of P700.
