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Structure and Electron Transfer Reactions of Blue Copper Proteins

Gray, Harry B. and Coyle, Catherine L. and Dooley, David M. and Grunthaner, Paula J. and Hare, Jeffrey W. and Holwerda, Robert A. and McArdle, James V. and McMillin, David R. and Rawlings, Jill and Rosenberg, Robert C. and Sailasutá, N. and Solomon, Edward I. and Stephens, P. J. and Wherland, Scot and Wurzbach, James A. (1977) Structure and Electron Transfer Reactions of Blue Copper Proteins. In: Bioinorganic Chemistry—II. Advances in Chemistry. No.162. American Chemical Society , Washington, DC, pp. 145-155. ISBN 9780841203594. http://resolver.caltech.edu/CaltechAUTHORS:20180404-112341537

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Abstract

Complete assignments of the electronic spectra of stellacyanin, plastocyanin, and azurin have been made. Bands attributable to d-d transitions have been located in the near-infrared region for the first time, and their positions are consistent with a distorted tetrahedral geometry for the blue copper center. The kinetics of the electron transfer reactions of stellacyanin, azurin, and plastocyanin with Fe(EDTA)^(2-) and Co(phen)_3^(3+) have been studied. Kinetic parameters indicate that reduction of azurin and plastocyanin by Fe(EDTA)^(2-) occurs by long distance transfer to a buried blue copper center. However, the pathway for oxidation involves substantial protein rearrangement, thereby allowing contact of Co(phen)_3^(3+) with the copper ligands. In contrast, the blue copper center of stellacyanin is equally accessible in solution to redox agents.


Item Type:Book Section
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http://dx.doi.org/0.1021/ba-1977-0162.ch008DOIArticle
https://pubs.acs.org/doi/abs/10.1021/ba-1977-0162.ch008PublisherArticle
ORCID:
AuthorORCID
Solomon, Edward I.0000-0003-0291-3199
Additional Information:© 1977 American Chemical Society. Received July 26, 1976. Published in print 1 June 1977. We thank F. C. Anson and F. J. Grunthaner for helpful discussions. Research on blue copper proteins at the California Institute of Technology has been supported by the National Science Foundation. This paper is contribution no. 5366 from the Arthur Amos Noyes Laboratory of Chemical Physics.
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Caltech Noyes Laboratory of Chemical Physics5366
Record Number:CaltechAUTHORS:20180404-112341537
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180404-112341537
Official Citation:Structure and Electron Transfer Reactions of Blue Copper Proteins HARRY B. GRAY, CATHERINE L. COYLE, DAVID M. DOOLEY, PAULA J. GRUNTHANER, JEFFREY W. HARE, ROBERT A. HOLWERDA, JAMES V. McARDLE, DAVID R. McMILLIN, JILL RAWLINGS, ROBERT C. ROSENBERG, N. SAILASUTÁ, EDWARD I. SOLOMON, P. J. STEPHENS, SCOT WHERLAND, and JAMES A. WURZBACH Bioinorganic Chemistry—II. June 1, 1977 , 145-155 DOI:10.1021/ba-1977-0162.ch008
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85601
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:04 Apr 2018 22:14
Last Modified:04 Apr 2018 22:14

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