Absence of a Formate-Induced Release of Bicarbonate from Photosystem II.

@article{Stemler1989AbsenceOA,
  title={Absence of a Formate-Induced Release of Bicarbonate from Photosystem II.},
  author={Alan J. Stemler},
  journal={Plant physiology},
  year={1989},
  volume={91 1},
  pages={287-90}
}
Formate has been proposed to inhibit electron flow in photosystem II by replacing endogenous bound bicarbonate on the reaction center complex. A mass spectrometer was used to measure directly the CO(2)/HCO(3) (-) released when maize thylakoids, showing normal rates of electron flow, were treated with formate. Although the formate inhibited electron flow by 95%, no release (displacement) of CO(2)/HCO(3) (-) was detected. This is consistent with the concept that membrane-bound HCO(3) (-) is not a… CONTINUE READING