Photosynthetic reaction centers reorganization energies

Studies of ferredoxin [152] and a photosynthetic reaction center [151] have analyzed further the protein s dielectric response to electron transfer, and the protein s role in reducing the reorganization free energy so as to accelerate electron transfer [152], Different force fields were compared, including a polarizable and a non-polarizable force field [151]. One very recent study considered the effect of point mutations on the redox potential of the protein azurin [56]. Structural relaxation along the simulated reaction pathway was analyzed in detail. Similar to the Cyt c study above, several slow relaxation channels were found, which limited the ability to obtain very precise free energy estimates. Only semiquantitative values were... 

D Souza E, Maligaspe E, Ohkubo K et al (2009) Photosynthetic reaction center mimicry low reorganization energy driven charge stabilization in self-assembled cofacial zinc phthalocy-anine dimer-fullerene conjugate. J Am Chem Soc 131 8787-8797... 

Parson, W. W., Chu, Z. T., and Warshel, A., 1998, Reorganization energy of the initial electron-transfer step in photosynthetic bacterial reaction centers Biophysical Journal 74 182nl91. 

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