Display Settings:


Send to:

Choose Destination
See comment in PubMed Commons below
J Comput Chem. 2010 Jan 30;31(2):447-54. doi: 10.1002/jcc.21272.

Fragment molecular orbital study of the electronic excitations in the photosynthetic reaction center of Blastochloris viridis.

Author information

  • 1Information Technology Research Institute, AIST, 1-1-1 Umezono, Tsukuba 305-8568, Japan. ikegam@ni.aist.go.jp


All electron calculations were performed on the photosynthetic reaction center of Blastochloris viridis, using the fragment molecular orbital (FMO) method. The protein complex of 20,581 atoms and 77,754 electrons was divided into 1398 fragments, and the two-body expansion of FMO/6-31G* was applied to calculate the ground state. The excited electronic states of the embedded electron transfer system were separately calculated by the configuration interaction singles approach with the multilayer FMO method. Despite the structural symmetry of the system, asymmetric excitation energies were observed, especially on the bacteriopheophytin molecules. The asymmetry was attributed to electrostatic interaction with the surrounding proteins, in which the cytoplasmic side plays a major role.

Copyright 2009 Wiley Periodicals, Inc.

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for John Wiley & Sons, Inc.
    Loading ...
    Write to the Help Desk