Cytochrome bd Oxidase from Azotobacter vinelandii
نویسندگان
چکیده
منابع مشابه
Cytochrome c oxidase from Azotobacter vinelandii.
Although the terminal respiratory chain of Azotobacter has been the subject of several recent studies, the nature of the cytochrome oxidase portion is still somewhat obscure. Repaske (1) partially purified and characterized a soluble succinic dehydrogenase and succinoxidase system from Azotobacter z&elan&i. Wilson and Wilson (2) studied the soluble succinoxidase in Repaske’s preparation and dem...
متن کاملInhibitors of electron transport in the cytochrome bd complex of Azotobacter vinelandii.
Antimycin A, UHDBT and myxothiazol are representatives of different groups of inhibitors of the mitochondria1 bcl complex where they selectively act on the specific sites for quinone reduction and oxidation. We report here their effects on the purified cytochrome bd terminal oxidase complex from Auinelandii which functions as a quinol oxidase. The quinol binding site is, in the E. coli enzyme, ...
متن کاملCytochemistry of cytochrome oxidase in the cytoplasmic and intracytoplasmic membranes of Azotobacter vinelandii.
Vegetative cells of Azotobacter vinelandii contain a system of intracytoplasmic membranes in the form of numerous internal vesicles. The three-dimensional morphology of these internal vesicles was established by an examination of stereopair electron micrographs of negatively stained cells. The vesicles assumed a variety of forms ranging from nearly spherical units to short, curved tubules. Thes...
متن کاملTetramethyl-p-phenylenediamine oxidase reaction in Azotobacter vinelandii.
It was possible to quantitate the tetramethyl-p-phenylenediamine (TMPD) oxidase reaction in Azotobacter vinelandii strain O using turbidimetrically standarized resting cell suspensions. The Q(O2) value obtained for whole cell oxidation of ascorbate-TMPD appeared to reflect the full measure of the high respiratory oxidative capability usually exhibited by this genera of organisms. The Q(O2) valu...
متن کاملCytochrome and ubiquinone patterns during growth of Azotobacter vinelandii.
After synthesis during the early log phase, the concentrations of ubiquinone and cytochromes did not vary during the growth cycle of Azotobacter vinelandii, when grown with either high or low aeration on nitrogen-free or urea-containing media. The level of aeration had no effect on the concentrations of the electron carriers synthesized, but affected the growth rate. On urea-containing medium, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1995
ISSN: 0021-9258
DOI: 10.1074/jbc.270.27.16213