The redox potentials of the two-iron plant algal ferredoxins. An electrostatic model
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چکیده
منابع مشابه
The redox potentials of the two-iron plant and algal ferredoxins. An electrostatic model.
The two-iron-sulphur co-ordination centre in plant and algal ferredoxins is considered as a collection of charged ions whose net negative charge is twice that of the one-iron-sulphur protein rubredoxin. Calculation of the electrostatic free-energy changes for reduction of the two types of proteins indicates that the redox potential of the two-iron-sulphur proteins should be more negative than t...
متن کاملMidpoint redox potentials of plant and algal ferredoxins.
Midpoint potentials of plant-type ferredoxins from a range of sources were measured by redox titrations combined with electron-paramagnetic-resonance spectroscopy. For ferredoxins from higher plants, green algae and most red algae, the midpoint potentials (at pH 8.0) were between --390 and --425 mV. Values for the major ferredoxin fractions from blue-green algae were less negative (between --32...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1973
ISSN: 0264-6021
DOI: 10.1042/bj1330283