NDLI: Die Stöchiometrie der Photosynthese in isolierten Chloroplasten

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Die Stöchiometrie der Photosynthese in isolierten Chloroplasten

Content Provider	Semantic Scholar
Author	Jacobi, Günter W.
Copyright Year	1963
Abstract	As reported previously there is no stoichiometry between the amounts of ATP and NADPH2 formed in light by isolated chloroplasts of spinach. The amount of esterified inorganic phosphate is always too low. However, addition of ascorbate leads to an increase of ATP- but not of NADPH2-formation, independent of the gas phase present. Further experiments indicated that for the formation of “extra”-ATP with limiting amounts of NADP in long term experiments aerobic conditions are required. This additional ATP-formation occurs only in presence of ascorbate and starts when all NADP has been photoreduced. Ascorbate alone leads to photophosphorylation different from those systems, in which ascorbate is used as electron donor. The ascorbate induced photophosphorylation is strongly inhibited by o-phenanthroline and partly by cyanide. It is assumed that this ATP-formation is coupled with an oxygen exchange via a redox compound such as indophenol at the level of the second light reaction.
Starting Page	470
Ending Page	480
Page Count	11
File Format	PDF HTM / HTML
DOI	10.1515/znb-1964-0604
Alternate Webpage(s)	http://zfn.mpdl.mpg.de/data/Reihe_B/18/ZNB-1963-18b-0711.pdf
Alternate Webpage(s)	http://zfn.mpdl.mpg.de/data/Reihe_B/19/ZNB-1964-19b-0470.pdf
Alternate Webpage(s)	https://doi.org/10.1515/znb-1964-0604
Volume Number	19
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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