«NITROGENASE»に関連する英語の本
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1
Biological Inorganic Chemistry: Structure and Reactivity
7120 (a heterocyst-forming cyanobacterium). Xll. 3. 4. Relationships among
Nitrogenases With a single exception (see Section XII. 3.4.3), all nitrogen-fixing
organisms have the Mo-nitrogenase. As mentioned above, there are two other
types of ...
2
The Prokaryotes: Vol. 6: Proteobacteria: Gamma Subclass
Both observations have led to detailed investigations on the role of oxygen in the
nitrogenase complex. Experiments revealed that in Azotobacter a special
mechanism operates which protects the oxygen-sensitive nitrogenase from
oxygen ...
Martin Dworkin, Stanley Falkow, 2006
3
Nitrogen Fixation: Fundamentals and Applications: ...
PHOTOSTIMULATION OF NITROGENASE REACTION IN VITRO FOR
INVESTIGATION OF NITROGENASE MECHANISM ACTION SYRTSOVAL.A.,
DRUZfflNIN S.Yu., KHRAMOV A.V., MORAVSKY A.P. Institute of Chemical
Physics of Russian ...
Igor A. Tikhonovich, 1995
4
Biology of the Nitrogen Cycle
The other two combinations are also found; A. chroococcum has both a Mo- and
V-nitrogenase, whereas Rhodobacter capsulatus has a Mo- and Fe-nitrogenase [
1, 2]. Which nitrogenase is expressed depends on the availability of Mo and V in
...
Hermann Bothe, Stuart Ferguson, William Edward Newton, 2007
(The reduction of acetylene is a standard test of the activity of nitrogenase fixing
systems, see Box). Most important, trace levels of molybdenum that would have
stimulated the growth of the original strain inhibited the growth of the deleted one.
The vanadium nitrogenase has been demonstrated in Azotobacter chro-
ococctim and A. vinelandii, both of these are obligate aerobic diazotrophic
bacteria. It has been observed that purified V-nitrogenase catalyzes the reduction
of acetylene ...
7
Nitrogen Fixation in Tropical Cropping Systems
As well as the reduction of N2 to NH3, nitrogenase will reduce a number of other
substrates that contain triple bonds. The most important of these alternative
substrates is acetylene, which is reduced to ethylene, as this reaction forms the
basis ...
8
Nitrogen Fixation at the Millennium
Moreover, all three nitrogenase types are found in A. vinelandii. The expression
of each nitrogenase is under hierarchical control through the availability of either
Mo or V in the growth medium [65,66]. Whenever Mo is available, expression of ...
still. Nitrogenase synthesis begins again when ammonia is eliminated. It is
known that certain aniino acids, particularly aspartic acid, stimulated the
formation of nitrogenase after ammonia had been exhausted from the medium
supporting ...
10
Ecology of Cyanobacteria II: Their Diversity in Space and Time
4.22 Effect of sulphide on nitrogenase activity (acetylene reduction, ARA) in: (a)
mat of the heterocystous Anabaena sp. (lagoon, Atlantic coast of France); (b) mat
of non-heterocystous cyanobacteria (Oscillatoria sp. and Phormidium sp.) ...
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6 junior faculty members named 2015-16 UCI Hellman Fellows
... the nitrogenase mechanism and nitrogen fixation and assembly, with an emphasis on the genetic manipulation of nitrogenase enzymes. «UCI News, 7月 15»
Rhizobium–legume symbiosis in the absence of Nod factors: two …
Using cytological analysis of the nodules and the nitrogenase enzyme activity as markers, a gradient in the symbiotic interaction between ... «Nature.com, 7月 15»
"Plant Intelligence" Is Programmed, Not Intrinsic
These bacteria have an enzyme called nitrogenase that so far has defied our attempts to understand it or duplicate it. Even though legumes ... «Discovery Institute, 6月 15»
Iron-sulfur proteins hiding in plain sight
... many of the known and highly characterized iron-sulfur proteins, including bacterial ferredoxins and nitrogenase, are bacterial. The key to the ... «Nature.com, 6月 15»
US scientists find way to accelerate ammonia production
The research team identified that the nitrogenase MoFe enzyme, which produces ammonia without added hydrogen, is being hindered by Fe ... «Chemicals Technology, 6月 15»
Electron-delivering protein manipulates natural catalyst, changing …
This little protein delivers electrons to the larger nitrogenase MoFe enzyme. The smaller protein's actions limit the enzyme's speed. Recently ... «Phys.Org, 6月 15»
Nitrogenase diversity and activity in the gastrointestinal tract of the …
Nitrogenase activity, measured by acetylene reduction assays, could be detected in freshly dissected GI tract material and also from anaerobic ... «Nature.com, 4月 15»
Why nodulation fails
... calcium are especially important for either nodule formation or for the proper activity of the nitrogen-fixing enzyme, nitrogenase,” she says. «Grainews, 3月 15»
Bacteria Got an Early Fix on Nitrogen
But most of the biosphere's usable nitrogen is the result of bacteria employing an enzyme called nitrogenase to pull nitrogen out of the air. «Scientific American, 2月 15»
Origin of nitrogen-fixing life on Earth pushed back a billion years …
... its source was 3.2-billion-year-old "biological nitrogen-fixation, most likely using molybdenum-based nitrogenase," the researchers wrote. «OregonLive.com, 2月 15»
