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Binding of copper(II) to proteins of the photosynthetic membrane and its correlation with inhibition of electron transport in class II chloroplasts of spinach
- ncubation of class II chloroplasts of spinach with copper in the light at pH = 8 in concentrations that inhibit oxygen evolution results in the formation of a copper (II) protein complex with the photosynthetic membrane. The EPR spectra indicate that the four nearest ligands to Cu(II) consist of three oxygen atoms and one nitrogen atom. The copper (II) protein appears to be pre dominantly associated with photosystem II. The formation of this protein as measured by the EPR signal amplitude of its room temperature spectrum correlates with the inhibition of oxygen evolution and of electron transport within photosystem I. This result indicates that the inhibition of photosynthetic electron transport by copper may be due to the formation of a copper (II) chelate with a membrane protein.
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| Author: | Gerhard Vierke, Peter StruckmeierGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-714676 |
| DOI: | https://doi.org/10.1515/znc-1977-7-820 |
| ISSN: | 0939-5075 |
| ISSN: | 1865-7125 |
| Parent Title (German): | Zeitschrift für Naturforschung, C |
| Publisher: | Verlag der Zeitschrift für Naturforschung |
| Place of publication: | Tübingen |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2014/06/02 |
| Year of first Publication: | 1977 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2024/01/30 |
| Tag: | EPR of Copper (II) Complexes with Membrane Proteins; Inhibition of Photosynthetic Electron Transport |
| Volume: | 32.1977 |
| Issue: | 7-8 |
| Page Number: | 6 |
| First Page: | 605 |
| Last Page: | 610 |
| Institutes: | Biochemie, Chemie und Pharmazie / Biochemie und Chemie |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
| 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie | |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung-Nicht kommerziell-Keine Bearbeitung 3.0 |
