| Publication Type |
Journal Article |
| Title |
Electrochemical studies on c-type cytochromes at microelectrodes |
| Authors |
Margarida Correia dos Santos PMP de Sousa Lurdes Simões Gonçalves H Lopes I. Moura JJG Moura |
| Groups |
|
| Journal |
JOURNAL OF ELECTROANALYTICAL CHEMISTRY |
| Year |
1999 |
| Month |
March |
| Volume |
464 |
| Number |
1 |
| Pages |
76-84 |
| Abstract |
The aim of this work is to use microelectrodes as a current approach for the study of unmediated electrochemistry of redox proteins. An electrochemical study of monohemic cytochromes c(552) from Pseudomonas nautica 617, cytochrome c(553) from Desulfovibrio vulgaris and horse heart cytochrome c is presented at inlaid disk microelectrodes of platinum. gold and carbon. Different electrochemical techniques were used such as linear scan, differential pulse and square wave voltammetry. The electrochemical response was also analysed at conventional size (macro) electrodes for comparison In all situations a promoter was used. The electrochemical behaviour was evaluated in terms of kinetics of the electrode processes and the formal potentials determined. Diffusion coefficients were also calculated from the voltammetric data. A critical comparison of the results obtained is carried out and the advantages of microelectrodes for electrochemical studies of metalloproteins are pointed out. (C) 1999 Elsevier Science S.A. All rights reserved. |
| DOI |
http://dx.doi.org/ |
| ISBN |
|
| Publisher |
ELSEVIER SCIENCE SA |
| Book Title |
|
| ISSN |
0022-0728 |
| EISSN |
|
| Conference Name |
|
| Bibtex ID |
ISI:000079381100010 |
| Observations |
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