Kinetic studies on redox reactions of hemoproteins. II. Reduction of thermoresistant cytochrome c-552 and horse heart cytochrome c by ascorbic acid.

Kinetic studies on redox reactions of hemoproteins. II. Reduction of thermoresistant cytochrome c-552 and horse heart cytochrome c by ascorbic acid. Research Abstract Details 

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Kinetic studies on redox reactions of hemoproteins. II. Reduction of thermoresistant cytochrome c-552 and horse heart cytochrome c by ascorbic acid. Abstract Text:

H Kihara,H Nakatani,K Hiromi,K Hon-Nami,T Oshima,

The reductions of thermoresistant cytochrome c-552 and horse heart cytochrome c by ascorbic acid were studied by the stopped-flow method between pH 4 and 10. The results were as follows (1) The reduction of horse heart cytochrome c showed two relaxation decays above pH 8.5, one of which was pseudo-first order, as was the case below pH 8, while the other was nearly concentration-independent. These results were consistent with those reported by Greenwood and Palmer (J. Biol. Chem. (1965) 240, 3660-3663). (2) For the reduction of cytochrome c-552, only a single relaxational decay that obeyed pseudo-first order kinetics was observed. (3) It seems most reasonable to assume that the concentration-independent relaxation process can be attributed to the isomerization reaction accompanying ligand exchange, since it is known that only horse heart cytochrome c exhibits ligand exchange, involving a residue with pK 9.3.

Kinetic studies on redox reactions of hemoproteins. II. Reduction of thermoresistant cytochrome c-552 and horse heart cytochrome c by ascorbic acid. Publishing Authors By Initials

H Kihara,H Nakatani,K Hiromi,K Hon-Nami,T Oshima,

For similar environment and public health: environment: environment, controlled: temperature research abstracts see: environment and public health: environment: environment, controlled: temperature research

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Kinetic studies on redox reactions of hemoproteins. II. Reduction of thermoresistant cytochrome c-552 and horse heart cytochrome c by ascorbic acid. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of biochemistry

VOLUME: 83

Page Numbers: 243-8

Journal Abbreviation: J. Biochem.

ISSN: 0021-924X

DAY: 19

MONTH: Jan

YEAR: 1978

Kinetic studies on redox reactions of hemoproteins. II. Reduction of thermoresistant cytochrome c-552 and horse heart cytochrome c by ascorbic acid. Information

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LANGUAGE: eng

NlmUniqueID: 376600

Kinetic studies on redox reactions of hemoproteins. II. Reduction of thermoresistant cytochrome c-552 and horse heart cytochrome c by ascorbic acid. Keywords Mesh Terms:

KEYWORDS: Temperature

MESH TERMS: metabolism

Chemical & Substance for Abstract: Kinetic studies on redox reactions of hemoproteins. II. Reduction of thermoresistant cytochrome c-552 and horse heart cytochrome c by ascorbic acid. Information

Substance Name: Ascorbic Acid

Registry Number: 50-81-7

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Country: JAPAN

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MEDLINETA: J Biochem

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