title: [Redox potentials of some metalloproteins].
abstract: The standard redox potentials of soluble cytochromes c isolated from the green alga Chlorella and the blue-green algae Spirulina and Aphanezomenon were determined by potentiometric titration and found to be equal to +380 mB, +330 mB and +357 AB, respectively. The standard redox potentials of plastocyanin preparations from Pisum sativum and Atriplex leaves were also determined and found close to those of soluble cytochromes c, i. e. +395 mB and +375 mB, respectively. The metalloproteins studied were shown to belong to monoelectron carriers operating at the donor sites of photosystem I.
mesh_terms: D002708:Chlorella; D000458:Cyanobacteria; D003574:Cytochrome c Group; D008667:Metalloproteins; D010084:Oxidation-Reduction; D010944:Plants; D010970:Plastocyanin; D011199:Potentiometry
chemical_list: D003574:Cytochrome c Group; D008667:Metalloproteins; D010970:Plastocyanin
vernacular_title: Okislitel'no-vosstanovitel'nye potentsialy nekotorykh metalloprotendov.