Electrostatic complexation and photoinduced electron transfer between Zn-cytochrome c and [olyanionic fullerene dendrimers.

Martin Braun; Stefan Atalick; Dirk M Guldi; Harald Lanig; Michael Brettreich; Stephan Burghardt; Maria Hatzimarinaki; Elena Ravanelli; Maurizio Prato; Rudi van Eldik; Andreas Hirsch

doi:10.1002/chem.200204680

PubMed · 12916111

Electrostatic complexation and photoinduced electron transfer between Zn-cytochrome c and [olyanionic fullerene dendrimers.

Martin Braun·Stefan Atalick·Dirk M Guldi·Harald Lanig·Michael Brettreich·Stephan Burghardt·Maria Hatzimarinaki·Elena Ravanelli·Maurizio Prato·Rudi van Eldik·Andreas Hirsch

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Abstract

Two dendritic fullerene (DF) monoadducts, 2 and 3, which can carry up to 9 and 18 negative charges, respectively, were examined with respect to electrostatic complexation with Cytochrome c (Cytc). To facilitate comprehensive photophysical investigations, the zinc analogue of Cytc (ZnCytc) was prepared according to a novel, modified procedure. The association of ZnCytc and DF, and consequential photoinduced electron transfer within ZnCytc-DF from the photoexcited protein to the fullerene, was proven by fluorescence spectroscopy and transient absorption spectroscopy. These findings were also supported by circular dichroism as well as by extensive molecular dynamics (MD) simulations.

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Anions Cytochromes c Electrochemistry Electron Transport Fullerenes Heme Hydrogen Bonding Models, Chemical Models, Molecular Molecular Structure Photochemistry Polymers Spectrometry, Fluorescence Spectrophotometry, Infrared Static Electricity Stereoisomerism Zinc Journal Article Research Support, Non-U.S. Gov't

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Martin Braun, Stefan Atalick, Dirk M Guldi, Harald Lanig, Michael Brettreich, Stephan Burghardt, Maria Hatzimarinaki, Elena Ravanelli, Maurizio Prato, Rudi van Eldik, Andreas Hirsch. 2003-08-18. Electrostatic complexation and photoinduced electron transfer between Zn-cytochrome c and [olyanionic fullerene dendrimers.. https://doi.org/10.1002/chem.200204680

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