Effects of Chloride/Bromide Substitution on Substrate Water Exchange Rates in Photosystem II. Beckmann, K., Ishida, N., Boussac, A., & Messinger, J. In Allen, J. F., Gantt, E., Golbeck, J. H., & Osmond, B., editors, Photosynthesis. Energy from the Sun, pages 369–371, Dordrecht, 2008. Springer Netherlands.
doi  abstract   bibtex   
The role of chloride in photosynthetic water oxidation is still under discussion since both its precise function and possible binding site are unresolved. In the present study the effects of Cl− on substrate water binding was investigated by monitoring the substrate water exchange kinetics in the S3-state. This was measured with time-resolved membrane-inlet mass spectrometry in thylakoids isolated from Thermosynechococcus elongatus grown in either CaCl2- or CaBr2-containing media. The results show that the exchange rate of the slowly exchangeable substrate water molecule is accelerated by replacement of Cl− by Br−.
@inproceedings{beckmann_effects_2008,
	address = {Dordrecht},
	title = {Effects of {Chloride}/{Bromide} {Substitution} on {Substrate} {Water} {Exchange} {Rates} in {Photosystem} {II}},
	isbn = {978-1-4020-6709-9},
	doi = {10.1007/978-1-4020-6709-9_83},
	abstract = {The role of chloride in photosynthetic water oxidation is still under discussion since both its precise function and possible binding site are unresolved. In the present study the effects of Cl− on substrate water binding was investigated by monitoring the substrate water exchange kinetics in the S3-state. This was measured with time-resolved membrane-inlet mass spectrometry in thylakoids isolated from Thermosynechococcus elongatus grown in either CaCl2- or CaBr2-containing media. The results show that the exchange rate of the slowly exchangeable substrate water molecule is accelerated by replacement of Cl− by Br−.},
	language = {en},
	booktitle = {Photosynthesis. {Energy} from the {Sun}},
	publisher = {Springer Netherlands},
	author = {Beckmann, Katrin and Ishida, Naoko and Boussac, Alain and Messinger, Johannes},
	editor = {Allen, John F. and Gantt, Elisabeth and Golbeck, John H. and Osmond, Barry},
	year = {2008},
	keywords = {Bromide, chloride, isotope exchange, membrane-inlet mass spectrometry, oxygen evolving complex, photosystem II, substrate water},
	pages = {369--371},
}

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