Characterization of the photoreduction of the secondary quinone QB in the photosynthetic reaction center from rhodobacter capsulatus with FTIR spectroscopy

  • Nabedryk
  • Published 1999 in Biochimica et biophysica acta

Abstract

The photoreduction of the secondary quinone acceptor QB in reaction centers (RCs) of the photosynthetic bacteria Rhodobacter (Rb.) capsulatus has been investigated by light-induced FTIR difference spectroscopy in 1H2O and 2H2O. The Q-B/QB FTIR spectra reflect reorganization of the protein upon electron transfer, changes of protonation state of carboxylic… (More)

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