Results 251 to 260 of about 26,184 (298)

The enigmatic cytochrome b-559 of oxygenic photosynthesis

Physiologia Plantarum, 1993
The ubiquitous and obligatory association of cytochrome b‐559 with the photosystem II reaction center of oxygenic photosynthesis is a conundrum since it seems not to have a function in the primary electron transport pathway of oxygen evolution. A model for the cytochrome structure that satisfies the cis‐positive rule for membrane protein assembly ...
William A, Cramer, Gun-Sik, Tae, Paul N, Furbacher, Michel, Böttger   +3 more
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Interaction of cytochrome b₅ and cytochrome c

2010
The interaction and kinetics of electron transfer between cytochrome b₅ and cytochrome c, two well characterised soluble electron transfer proteins, have been investigated by three techniques. First, fluorescence quenching experiments were done with cytochrome b₅ and porphyrin cytochrome c, a fluorescent analogue of cytochrome c.
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Crystalline Cytochrome b 5

Nature, 1959
CYTOCHROME c and b 5 are the only cytochromes isolated from animal tissues in purified soluble forms which are reducible by soluble flavoprotein. Further studies on the enzymatic and chemical properties of cytochrome b 5 are badly needed.
I, RAW, W, COLLI
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Evidence for a cytochrome b in green bacteria

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1974
Abstract Chemical and photochemical evidence is presented for a low potential cytochrome b (C563) bound to the photochemical reaction center complex of green bacteria. This cytochrome undergoes reversible light-induced oxidation. The midpoint potential lies between 0.0 V and −150 mV.
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Association of cytochrome b translational activator proteins with the mitochondrial membrane: implications for cytochrome b expression in yeast

Molecular and General Genetics MGG, 1991
The products of the nuclear genes CBS1 and CBS2 are both required for translational activation of mitochondrial apocytochrome b in yeast. We report the intramitochondrial localization of both proteins by use of specific antisera. Based on its solubilization properties the CBS1 protein is presumed to be a component of the mitochondrial membrane; the ...
U, Michaelis, A, Körte, G, Rödel
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Mitochondrial Cytochrome b 560

1987
Cytochrome b 560 the succinate-ubiquinone (Q) reductase region of the mitochondrial electron transfer chain was first reported by Davis et al. (1,2). In spite of the detection of cytochrome b 560 in various succinate -Q1 reductase (3,4), and Complex II (5–7) preparations, this cytochrome has often been regarded as a contaminant of the denatured ...
Chang-An Yu, Linda Yu
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High-energy forms of cytochrome b II. The effect of ATP and antimycin on cytochrome b in intact mitochondria

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1970
Abstract 1. Both antimycin and ATP induce a red shift of the b band when added to succinate-reduced rat-heart mitochondria in the absence of oxygen. The intensity of the new band is greater with antimycin than with ATP, and the two effects are not additive, since ATP has only a slight effect in the presence of antimycin. 2.
H J, Wegdam, J A, Berden, E C, Slater
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Cytochrome b oxidation and reduction reactions in the ubiquinone-cytochrome b/c2 oxidoreductase from Rhodopseudomonas Sphaeroides

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1981
1. The kinetics of cytochrome b reduction and oxidation in the ubiquinone-cytochrome b/c2 oxidoreductase of chromatophores from Rhodopseudomonas sphaeroides Ga have been measured both in the presence and absence of antimycin, after subtraction of contributions due to absorption changes from cytochrome c2, the oxidized bacteriochlorophyll dimer of the ...
D P, O'Keefe, P L, Dutton
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Clinical differences in chronic granulomatous disease in patients with cytochrome b-negative or cytochrome b-positive neutrophils

The Journal of Pediatrics, 1985
1. Tamborlane WV, Sherwin RS, Genel M, Felig P: Outpatient treatment of juvenile-onset diabetes with a preprogrammed portable subcutaneous insulin infusion system. Am J Med 68:190, 1980. 2. Mecklenburg RS, Benson JW, Becker NM, Brazel LP, Fredland PN, Metz R J, Nielsen RL, Sannac CA, Steenrod W J: Clinical use of the insulin infusion pump in 100 ...
Weening, R. S., Adriaansz, L. H., Weemaes, C. M., Lutter, R., Roos, D.   +4 more
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Cytochrome b of the Respiratory Chain

1985
As originally pointed out by Keilin and Hartree (1939), to whom we owe most of the basic definitions in this general field, cytochrome b can be distinguished from the other cytochromes of the respiratory chain, i.e., c and aa 3, on the basis of the following characteristic properties: an oxidation reduction potential permitting its ready reduction by ...
Henry R. Mahler, Philip S. Perlman
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