Published January 29, 2021 | Version v1
Preprint Open

Ethylenediammine is not detrimental to the photoactivity of the bacterial photosynthetic reaction center

Creators

  • 1. University of Bari, CNR-IPCF
  • 2. University of Bari
  • 3. CNR-IPCF

Description

The effect of the exposure of the photosynthetic reaction center from the purple bacterium Rhodobacter sphaeroides to ethylenediamine (EDA) was investigated by transient absorption spectroscopy and UV-Visible-Near Infrared absorption spectroscopy. It was demonstrated that EDA is not detrimental to the photoactivity of the protein even at pH close to 12. EDA instead appears to inhibit the secondary quinone binding site with an apparent binding constant of 19.05 mM-1.

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Additional details

Funding

European Commission
HyPhOE - Hybrid Electronics based on Photosynthetic Organisms 800926