Results 261 to 270 of about 102,161 (305)
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Nature, 1958
IT has been concluded from experiments with barley leaves that chloroplasts contain cytochromes ƒ and b 6 and no cytochrome c 1. We have been able to extend the observations to two other widely differing species and to record certain characteristics of the cytochromes present.
Rachel M. Leech, W. O. James
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IT has been concluded from experiments with barley leaves that chloroplasts contain cytochromes ƒ and b 6 and no cytochrome c 1. We have been able to extend the observations to two other widely differing species and to record certain characteristics of the cytochromes present.
Rachel M. Leech, W. O. James
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Nature, 1958
A CYTOCHROME system appears to be involved in the oxidation of nitrite by Nitrobacter since, at normal temperatures, three cytochrome bands may be seen in suspensions of the cells in the presence of nitrite, but not in its absence. These are two sharp bands at 521 mµ and at 550 mµ and a more diffuse, less-intense band at about 589 mµ 1.
H. Lees, W. D. Butt
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A CYTOCHROME system appears to be involved in the oxidation of nitrite by Nitrobacter since, at normal temperatures, three cytochrome bands may be seen in suspensions of the cells in the presence of nitrite, but not in its absence. These are two sharp bands at 521 mµ and at 550 mµ and a more diffuse, less-intense band at about 589 mµ 1.
H. Lees, W. D. Butt
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Biochimica et Biophysica Acta, 1960
Abstract In the present paper, the important role played by cytochrome c in the cytochrome oxidase system is demonstrated by using highly purified praparatinos of cytochromes a , c 1 , and c 1 . Despite the fact that cytochrome a can be rapidly reduced by p -phenylene-diamine, the component is not oxidized by oxyge if cytochrome c is not ...
Kazuo Okunuki +3 more
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Abstract In the present paper, the important role played by cytochrome c in the cytochrome oxidase system is demonstrated by using highly purified praparatinos of cytochromes a , c 1 , and c 1 . Despite the fact that cytochrome a can be rapidly reduced by p -phenylene-diamine, the component is not oxidized by oxyge if cytochrome c is not ...
Kazuo Okunuki +3 more
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Interaction between cytochrome c and cytochrome b5
Biochemistry, 1979The reduction of cytochrome c by cytochrome b5 was studied over a wide range of ionic strengths in four different buffer systems. The reaction rate decreased linearly as the I1/2 was increased, suggesting that electrostatic interactions are important in the interaction.
Francis Millett +2 more
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Physiological Reviews, 1969
M. R. Lemberg, “Cytochrome Oxidase” Gilmour, Lemberg, and Chance or Lemberg and Chance, unpublished observations, should now be: Gilmour, M. V., M. R. Lemberg, and B. Chance. Cytochrome oxidase and its derivatives. 9. Spectrophotometric studies on the rapid reaction of ferrous cytochrome c oxidase with molecular oxygen under conditions of complete ...
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M. R. Lemberg, “Cytochrome Oxidase” Gilmour, Lemberg, and Chance or Lemberg and Chance, unpublished observations, should now be: Gilmour, M. V., M. R. Lemberg, and B. Chance. Cytochrome oxidase and its derivatives. 9. Spectrophotometric studies on the rapid reaction of ferrous cytochrome c oxidase with molecular oxygen under conditions of complete ...
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Conversion of Cytochrome b562 to c-Type Cytochromes
Biochemistry, 1995Cytochrome b562 from the periplasm of Escherichia coli is the only member of a family of cytochromes sharing the 4-alpha-helical bundle structural motif that does not have a covalently bound heme. We have introduced cysteine residues into the amino acid sequence of cytochrome b562 in positions homologous to those found in the other members of the ...
Edmund P. Nerou +3 more
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On cytochrome c oxidase I. The extinction coefficients of cytochrome a and cytochrome a3
Biochimica et Biophysica Acta (BBA) - Enzymology and Biological Oxidation, 1966Summary 1. In agreement with Gibson, a shoulder at 420–424 m μ is present in the absorption spectra of preparations of cytochrome c oxidase (ferrocytochromec: oxygen oxidoreductase, EC 1.9.3.1) reduced with Na 2 S 2 O 4 . An examination of the spectra in the presence and absence of cyanide showed that this is due to the presence of equal amounts
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The reaction between cytochrome C1 and cytochrome C
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1981The kinetics of electron transfer between the isolated enzymes of cytochrome c1 and cytochrome c have been investigated using the stopped-flow technique. The reaction between ferrocytochrome c1 and ferricytochrome c is fast; the second-order rate constant (k1) is 3.0 . 10(7) M-1 . s-1 at low ionic strength (I = 223 mM, 10 degrees C).
B.F. Van Gelder, J. Wilms, B.W. König
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Phosphorylation of cytochrome P450: Regulation by cytochrome b5
Archives of Biochemistry and Biophysics, 1989Rabbit liver cytochrome P450 LM2 and several forms of rat liver cytochrome P450 are phosphorylated by cAMP-dependent protein kinase (PKA) and by protein kinase C. Under aqueous assay conditions at neutral pH LM2 is phosphorylated only to a maximum extent of about 20 mol% by PKA.
Chi-Kuang Huang +4 more
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The Journal of Steroid Biochemistry and Molecular Biology, 2009
Male pigs are routinely castrated to prevent the accumulation of testicular 16-androstene steroids, in particular 5alpha-androst-16-en-3-one (5alpha-androstenone), which contribute to an off-odour and off-flavour known as boar taint. Cytochrome P450C17 (CYP17A1) catalyses the key regulatory step in the formation of the 16-androstene steroids from ...
E. J. Squires, M.J. Billen
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Male pigs are routinely castrated to prevent the accumulation of testicular 16-androstene steroids, in particular 5alpha-androst-16-en-3-one (5alpha-androstenone), which contribute to an off-odour and off-flavour known as boar taint. Cytochrome P450C17 (CYP17A1) catalyses the key regulatory step in the formation of the 16-androstene steroids from ...
E. J. Squires, M.J. Billen
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