Hydroxylamine as a Source of Nitrogen for Azotobacter Vinelandii.
نویسندگان
چکیده
منابع مشابه
The Utilization of Nitrogen in Hydroxylamine and Oximes by Azotobacter vinelandii.
Recent studies have provided several types of evidence supporting the view that ammonia is the key intermediate in nitrogen fixation by Azotobacter. An alternative hypothesis based on hydroxylamine depends almost entirely on the detection of traces of oximes in cultures fixing nitrogen. Although the two hypotheses are not mutually exclusive (Burris and Wilson, 1945), hydroxylamine remains an im...
متن کاملThe utilization of nitrogen in various compounds by Clostridium pasteurianum.
In biological nitrogen fixation the key intermediate compound, defined as the end product of the fixation reaction and the initial reactant of assimilation, is believed to be either ammonia or hydroxylamine. Burris and Wilson (1945) noted that these two possibilities need not be mutually exclusive but may occur simultaneously, depending on the concentrations of the carbon compounds serving as a...
متن کاملAction of Inhibitors on Hydrogenase in Azotobacter
The inhibitors usually associated with the activity of the cytochrome oxidase system-cyanide and carbon monoxide-are also effective in reducing the oxidation of H(2) by intact cells of Azotobacter vinelandii. The hydrogenase system is more sensitive to CO than is the respiratory system. Oxidation of a carbon source and of hydrogen by Azotobacter cells is inhibited in a quantitatively different ...
متن کاملRelationship of nitrite and hydroxylamine reductases to nitrate assimilation and nitrogen fixation in Azotobacter agile.
The nitrogen fixation process has been recently reviewed by Wilson (1952), Burris (1956), Shug et al. (1956), and Gest et al. (1956). Although the characteristics of the over-all process in vivo are well known, neither the pathway nor the enzymatic steps has been established. On the other hand, a number of enzymes from bacteria, fungi and higher plants have been characterized which together can...
متن کاملCorrelation of ultrastructure in Azotobacter vinelandii with nitrogen source for growth.
Azotobacter synthesizes an extensive internal membranous nework when grown with air (N(2)), i.e., under conditions when these bacteria fix nitrogen. Very slight quantities of internal membrane, concentrated mainly about the cell periphery, are formed when Azotobacter grows with fixed nitrogen, i.e., ammonia and amino acids. Compared to cells growing with ammonia, cells utilizing atmospheric nit...
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ورودعنوان ژورنال:
- Journal of bacteriology
دوره 57 1 شماره
صفحات -
تاریخ انتشار 1949