Nitrate reductase from Rhodopseudomonas sphaeroides
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چکیده
منابع مشابه
Assimilatory nitrate reductase of Rhodopseudomonas capsulata AD2: a molybdo-hemeprotein.
The assimilatory nitrate reductase of the phototrophic bacterium Rhodopseudomonas capsulata strain AD2 was purified to homogeneity by a combination of ammonium sulfate fractionation, chromatography on DEAE-cellulose and isoelectric focusing (isoelectric point of 4.8). The purified enzyme was active only with reduced viologen dyes or reduced flavin as electron donors. Contrary to other bacterial...
متن کاملCharacterization of a soluble NADH-independent nitrate reductase from the photosynthetic bacterium Rhodopseudomonas capsulata.
The assimilatory nitrate reductase was purified 60-fold from a newly isolated, nitrate assmilating strain of the photosynthetic bacterium Rhodopseudomonas capsulata. The enzyme had a molecular weight of about 180 000 dalton and was typically prokaryotic in that it was not active with reduced pyridine nucleotides but rather with reduced flavins.
متن کاملDegradation of Bacteriochlorophyll a in Rhodopseudomonas sphaeroides
J. Ullrich Physikalisches Institut der Universität, Pfaffenwaldring 57, D-7000 Stuttgart Z. Naturforsch. 40c, 685 — 692 (1985); received May 24, 1985 Rhodopseudomonas sphaeroides, Bacteriochlorophyll a, Bacteriopheophytin a, Bacteriopheophorbide a, Pigment aggregation A series of pigments of the bacteriopheophytin a spectral type have been isolated from ageing cultures of Rhodopseudomonas sphae...
متن کاملAnalysis of nitrate reductase mRNA expression and nitrate reductase activity in response to nitrogen supply
Nitrate is one of the major sources of nitrogen for the growth of plants. It is taken up by plant roots and transported to the leaves where it is reduced to nitrite in the. The main objective of this research was to investigate stimulatory effects of sodium nitrate, potassium nitrate, ammonia and urea on the production/generation of the nitrate reductase mRNA in Triticum aestivum plants. The pl...
متن کاملNitrate reductase from squash: cDNA cloning and nitrate regulation.
The assimilation of nitrate in plants involves the reduction of nitrate to ammonia in two steps. The first step requires nitrate reductase, a nitrate-inducible enzyme. When seedlings of squash (Cucurbita maxima L.) were treated with nitrate, both nitrate reductase activity and protein were induced in the cotyledons. Poly(A)(+) RNA was prepared from cotyledons of nitrate-treated seedlings and wa...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1982
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.150.3.1091-1097.1982