The Electron Transport System in Nitrogen Fixation by Azotobacter. I. Azotoflavin As an Electron Carrier

Overview

Journal Proc Natl Acad Sci U S A

Specialty Science

Date 1969 Nov 1

PMID 5264138

Citations 27

Authors

J R Benemann

D C Yoch

R C Valentine

D I Arnon

Affiliations

Soon will be listed here.

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.

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