Role of heme vinyl groups in cytochrome b5 electron transfer

1986 ◽  
Vol 108 (26) ◽  
pp. 8197-8201 ◽  
Author(s):  
Lorne S. Reid ◽  
Anthony R. Lim ◽  
A. Grant. Mauk
Keyword(s):  
Electron Transfer ◽  
Cytochrome B5

ChemInform Abstract: Role of Heme Vinyl Groups in Cytochrome b5 Electron Transfer.

ChemInform ◽  
1987 ◽  
Vol 18 (19) ◽  
Author(s):  
L. S. REID ◽  
A. R. LIM ◽  
A. G. MAUK
Keyword(s):  
Electron Transfer ◽  
Cytochrome B5

scholarly journals Reduction of ferric haemoproteins by tetrahydropterins: a kinetic study

2005 ◽  
Vol 392 (3) ◽  
pp. 583-587 ◽  
Author(s):  
Chantal Capeillere-Blandin ◽  
Delphine Mathieu ◽  
Daniel Mansuy
Keyword(s):  
Electron Transfer ◽  
Cytochrome C ◽  
Cytochrome B5 ◽  
Reduction Rate ◽  
Cation Radical ◽  
Order Reduction ◽  
Reduction Potentials ◽  
Electron Reduction ◽  
The One

We previously showed that one-electron transfer from tetrahydropterins to iron porphyrins is a very general reaction, with formation of an intermediate cation radical similar to the one detected in NO synthase. As a model reaction, the rates of reduction of eight haemoproteins by diMePH4 (6,7-dimethyltetrahydropterin) have been studied and correlated with their one-electron reduction potentials, Em (FeIII/FeII). On the basis of kinetic data analyses, a bimolecular collisional mechanism is proposed for the electron transfer from diMePH4 to ferrihaemoproteins. Haemoproteins with reduction potentials below −160 mV were shown not to be reduced by diMePH4 to the corresponding ferrohaemoproteins. For haemoproteins with reduction potentials more positive than −160 mV, such as chloroperoxidase, cytochrome b5, methaemoglobin and cytochrome c, there was a good correlation between the second-order reduction rate constant and the redox potential, Em (FeIII/FeII):The rate of reduction of cytochrome c by BH4 [(6R)-5,6,7,8-tetrahydrobiopterin] was determined to be similar to that of the reduction of cytochrome c by diMePH4. These results confirm the role of tetrahydropterins as one-electron donors to FeIII porphyrins.

Role of heme propionate groups in cytochrome b5 electron transfer

1984 ◽  
Vol 106 (7) ◽  
pp. 2182-2185 ◽  
Author(s):  
Lorne S. Reid ◽  
Marcia R. Mauk ◽  
A. Grant Mauk
Keyword(s):  
Electron Transfer ◽  
Cytochrome B5

Enzymic reduction of N-hydroxyamphetamine: the role of electron transfer system containing cytochrome b5

1988 ◽  
Vol 37 (2) ◽  
pp. 368-370 ◽  
Author(s):  
Hideyuki Yamada ◽  
Takahiko Baba ◽  
Kazuta Oguri ◽  
Hidetoshi Yoshimura
Keyword(s):  
Electron Transfer ◽  
Cytochrome B5 ◽  
Transfer System ◽  
Electron Transfer System

Electron transfer between cytochrome b5 and some oxidised haemoglobins: the role of ionic strength

2002 ◽  
Vol 88 (3-4) ◽  
pp. 328-334 ◽  
Author(s):  
Thomas Brittain ◽  
Richard D Kidd ◽  
Edward.N Baker
Keyword(s):  
Electron Transfer ◽  
Ionic Strength ◽  
Cytochrome B5

scholarly journals Conversion of Methanol on Rutile TiO2 (110) and Tungsten Oxide Clusters: 2. The Role of Defects and Electron Transfer in Bifunctional Oxidic Photocatalysts

2021 ◽  
Author(s):  
Lars Mohrhusen ◽  
Jessica Kräuter ◽  
Katharina Al-Shamery
Keyword(s):  
Electron Transfer ◽  
Transition Metal ◽  
Metal Oxide ◽  
Tungsten Oxide ◽  
Organic Compounds ◽  
Uv Irradiation ◽  
Organic P ◽  
Rutile Tio2 ◽  
Metal Oxide Surfaces

The photochemical conversion of organic compounds on tailored transition metal oxide surfaces by (UV) irradiation has found wide applications ranging from the production of chemicals to the degradation of organic...

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