Interaction between cadmium, zinc and silver-substituted plastocyanin and cytochrome b6f complex - heavy metals toxicity towards photosynthetic apparatus

• Autorzy: Sujak A
• Języki publikacji: EN

Abstrakty

EN

This paper reports the results of research on the interaction between the cytochrome f of the active cytochrome bf complex (incubated with Cd-, Zn-, and Ag-substituted plastocyanins) and Cu-plastocyanin. The presented studies show, that the metal derivatives of plastocyanin can have an influence on the photosynthetic electron transfer path: cytochrome b6fcomplex - photosystem I. The metal-substituted plastocyanins occupy the plastocyanin electron transfer site of the cytochromef The stopped-flow measurements show, that although the metal derivatives of plastocyanin do not influence the rate of cyt f - Pc electron transfer, creation of the non-electron-transfer complexes characterised by a strong binding between the cyt f and substituted plastocyanins and their slow release, dependent on the redox state of the substituted metal, results in the decrease of a turnover of the cytochrome complex.

Słowa kluczowe

EN

cytochrome b6f complex; silver; plant physiology; stopped-flow kinetics; photosynthetic apparatus; plastocyanin; toxicity; electron transfer; cadmium; zinc; metal substitution; heavy metal

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2005
• Tom: 27
• Numer: 1
• Opis fizyczny: p.61-69,fig.,ref.

Twórcy

autor

Sujak A

• University of Agriculture, Akademicka 13, 20-950 Lublin, Poland

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