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The oxidation state of copper in several model compounds containing copper coordinated to sulfur, some of which are suggested model compounds for naturally occurring Cu-S chromophores, was determined employing x-ray photoelectron spectrometry. Copper was found to be present in a 3d10 state, which is characteristic for Cu(I). An initial photoreduction is excluded, as Cu(ethylenediamine)2 (SCN)2, in which a Cu-S bond is also present, was found to contain Cu(II) (3d9). As was the case with native parsley plastocyanin, the model compounds reacted effectively with superoxide anion radicals. We suggest that the electrons of the metal-sulfur chromophore in blue copper proteins are delocalized and that an equilibrium: RS--Cu(II) in equilibrium or formed from RS.Cu(I) exists.
M Younes, and
W Pilz, and
U Weser
October 2012,
Journal of inorganic biochemistry,
M Younes, and
W Pilz, and
U Weser
October 2000,
Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry,
M Younes, and
W Pilz, and
U Weser
October 2005,
Journal of inorganic biochemistry,
M Younes, and
W Pilz, and
U Weser
October 1982,
Biochemical and biophysical research communications,
M Younes, and
W Pilz, and
U Weser
February 2004,
Chemical reviews,
M Younes, and
W Pilz, and
U Weser
July 2014,
Inorganic chemistry,
M Younes, and
W Pilz, and
U Weser
December 1975,
Journal of the American Chemical Society,
M Younes, and
W Pilz, and
U Weser
October 1976,
Journal of the American Chemical Society,
M Younes, and
W Pilz, and
U Weser
April 1968,
Science (New York, N.Y.),
M Younes, and
W Pilz, and
U Weser
January 1994,
Biochemistry,
