Results 241 to 250 of about 251,937 (291)

Functional domains of assimilatory nitrate reductases and nitrite reductases

Trends in Biochemical Sciences, 1990
Biochemical investigation of nitrate assimilation enzymes spans the past four decades. With the molecular cloning of genes for nitrate reductases and nitrite reductases, exciting new prospects are developing for the study of these enzymes. As large, complex enzymes with multiple redox centers, these two types of reductases should help us gain ...
Wilbur H. Campbell, James R. Kinghorn
openaire   +4 more sources

Pseudoazurin–Nitrite Reductase Interactions

ChemBioChem, 2005
AbstractThe nitrite reductase‐binding site on pseudoazurin has been determined by using NMR chemical‐shift perturbations. It comprises residues in the hydrophobic patch surrounding the exposed copper ligand His81 as well as several positively charged residues. The binding site is similar for both redox states of pseudoazurin, despite differences in the
Marcellus Ubbink, Antonietta Impagliazzo, Ludwig Krippahl   +2 more
openaire   +3 more sources

Inheritance of Nitrite Reductase [PDF]

, 1981
Although nitrite reductase (NiR) resides primarily in the chloroplast (Dalling et al., 1972; Lips et al., 1972; Miflin, 1974; Ritenour et al., 1967; Washitani et al., 1977) it has not been determined whether this enzyme is coded for by chloroplast DNA or by nuclear DNA.
R. C. Huffaker, S. Heath-Pagliuso
openaire   +1 more source

Studies on nitrite reductase in barley

Planta, 1973
Nitrite reductase from barley seedlings was purified 50-60 fold by ammonium sulphate precipitation and gel filtration. No differences were established in the characteristics of nitrite reductases isolated in this way from either leaf or root tissues.
B. J. Miflin, W. F. Bourne
openaire   +3 more sources

Denitrification and nitrite reduction: Pseudomonas aeruginosa nitrite-reductase

Biochimie, 1984
Present knowledge of the different enzymatic steps of the denitrification chains in various bacteria, particularly Paracoccus denitrificans and Pseudomonas aeruginosa has been briefly reviewed. The question whether nitric oxide (NO), nitrous oxide (N2O) and other nitrogen derivatives are obligatory intermediates has been discussed.
Philippe Bessières, Yann Henry
openaire   +3 more sources

On the Mechanism of Nitrite Reductase: Complex between Pseudoazurin and Nitrite Reductase from A. Cycloclastes [PDF]

, 1998
Dissimilatory nitrite reductase is a trimeric copper-containing protein in Alcaligenes faecalis and Achromobacter cycloclastes. NO is the immediate product and is an intermediate in the dissimilatory denitrification pathway, in which nitrate is completely reduced to N2.
Stewart Turley, Elinor T. Adman, Michael E. P. Murphy   +2 more
openaire   +1 more source

Structure of cytochrome c nitrite reductase

Nature, 1999
The enzyme cytochrome c nitrite reductase catalyses the six-electron reduction of nitrite to ammonia as one of the key steps in the biological nitrogen cycle, where it participates in the anaerobic energy metabolism of dissimilatory nitrate ammonification.
Einsle, Oliver, Messerschmidt, Albrecht, Stach, Petra, Bourenkov, Gleb P., Bartunik, Hans D., Huber, Robert, Kroneck, Peter M. H.   +6 more
openaire   +5 more sources

Homologues of nitrite reductases in ammonia-oxidizing archaea: diversity and genomic context.

Environmental Microbiology, 2010
Ammonia-oxidizing archaea are frequent and ubiquitous inhabitants of terrestrial and marine environments. As they have only recently been detected, most aspects of their metabolism are yet unknown.
Rita Bartossek, G. Nicol, A. Lanzén, H. Klenk, C. Schleper   +4 more
semanticscholar   +1 more source

Effect of a tridentate ligand on the structure, electronic structure, and reactivity of the copper(I) nitrite complex: role of the conserved three-histidine ligand environment of the type-2 copper site in copper-containing nitrite reductases.

Journal of the American Chemical Society, 2008
It is postulated that the copper(I) nitrite complex is a key reaction intermediate of copper containing nitrite reductases (Cu-NiRs), which catalyze the reduction of nitrite to nitric oxide (NO) gas in bacterial denitrification.
Masato Kujime, C. Izumi, M. Tomura, M. Hada, H. Fujii   +4 more
semanticscholar   +1 more source

A dissimilatory nitrite reductase in Paracoccus halodenitrificans

Archives of Microbiology, 1984
Paracoccus halodenitrificans produced a membrane-associated nitrite reductase. Spectrophotometric analysis showed it to be associated with a cd-cytochrome and located on the inner side of the cytoplasmic membrane. When supplied with nitrite, membrane preparations produced nitrous oxide and nitric oxide in different ratios depending on the electron ...
Michael A. Grant, Lawrence I. Hochstein
openaire   +3 more sources