THE ELECTION TRANSPORT SYSTEM IN NITROGEN FIXATION BY Azotobacter , I. AZOTOFLAVIN AS AN ELECTRON CARRIER
- 1 November 1969
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences of the United States of America
- Vol. 64 (3), 1079-1086
- https://doi.org/10.1073/pnas.64.3.1079
Abstract
A flavoprotein, named azotoflavin, was isolated from an extract of Azotobacter vinelandii cells, which linked the reducing power generated by illuminated spinach chloroplasts to the Azotobacter nitrogen-fixing enzyme complex. The photoreduction of the yellow azotoflavin by chloroplasts produced a stable, free-radical semiquinone, blue in color, with properties similar to those described by other investigators for an Azotobacter flavoprotein of unknown biological function.Keywords
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