Resonance Raman spectra of dioxygen adducts of cobalt porphyrins. Spectroscopic manifestation of vibrationally coupled dioxygen and energy matching of interactive modes

1988 ◽  
Vol 110 (14) ◽  
pp. 4541-4545 ◽  
Author(s):  
Leonard M. Proniewicz ◽  
Kazuo. Nakamoto ◽  
James R. Kincaid
1985 ◽  
Vol 107 (24) ◽  
pp. 6775-6781 ◽  
Author(s):  
James R. Kincaid ◽  
Leonard M. Proniewicz ◽  
Krzysztof Bajdor ◽  
Alan Bruha ◽  
Kazuo Nakamoto

1975 ◽  
Vol 97 (7) ◽  
pp. 1695-1698 ◽  
Author(s):  
William H. Woodruff ◽  
David H. Adams ◽  
Thomas G. Spiro ◽  
Takashi Yonetani

1983 ◽  
Vol 213 (2) ◽  
pp. 503-506 ◽  
Author(s):  
G Musci ◽  
A Desideri ◽  
L Morpurgo ◽  
A Garnier-Suillerot ◽  
L Tosi

Resonance-Raman spectra of Japanese-lacquer-tree (Rhus vernicifera) laccase, type-2-copper-depleted laccase and the latter form treated with H2O2 were measured in liquid and frozen solution, on excitation into the 600 nm absorption band. Significant changes in intensity and/or frequency of the bands lying in the 370-430 cm-1 region were observed on freezing, indicating local structural rearrangements taking place at the blue copper site. These findings corroborate previous suggestions based on e.p.r. measurements and redox data [Morpurgo, Calabrese, Desideri & Rotilio (1981) Biochem. J. 193, 639-642]. They show the strong dependence of the physical properties of blue copper centres on local symmetry. Some conclusions on the origin of the Raman bands are also drawn.


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