Journal ArticleDOI
A new model for dioxygen binding in hemocyanin. Synthesis, characterization, and molecular structure of the .mu.-.eta.2:.eta.2 peroxo dinuclear copper(II) complexes, [Cu(HB(3,5-R2pz)3)]2(O2) (R = isopropyl and Ph)
Nobumasa Kitajima,Kiyoshi Fujisawa,Chisato Fujimoto,Yoshihiko Moro-oka,Shinji Hashimoto,Teizo Kitagawa,Koshiro Toriumi,Kazuyuki Tatsumi,Akira Nakamura +8 more
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TLDR
In this article, the synthesis and characterization of μ-η 2 : η 2 peroxo dinuclear copper(II) complexes which to oxyhemocyanin (or oxytyrosinase) in their physicochemical properties are presented.Abstract:
The synthesis and characterization of μ-η 2 :η 2 peroxo dinuclear copper(II) complexes which to oxyhemocyanin (or oxytyrosinase) in their physicochemical properties are presented. The low-temperature reaction of a di-μ-hydroxo copper(II) complex [Cu(HB(3,5-i-Pr 2 pz) 3 )] 2 (OH) 2 (8) with H 2 O 2 gave a μ-peroxo complex [Cu(HB(3,5-i-Pr 2 pz) 3 )] 2 (O 2 ) (6)read more
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Journal ArticleDOI
Der erste strukturell charakterisierte Metallkomplex mit der freien Säure eines neuen Tris(pyrazolyl)borats als Liganden
Journal ArticleDOI
Mass Spectrometric Characterization of Limulus polyphemus Hemocyanin
Jacques Maddaluno,Kym F. Faull +1 more
TL;DR: Electrospray ionization-mass spectrometry of ion-exchange and reverse-phase purified hemocyanin from Limulus polyphemus revealed six predominant isoforms with molecular weights ranging from 71,730 to 72,695 Da, reflecting yet again the value of mass Spectrometry for recognizing molecular microheterogeneity in biological macromolecules and for following protein purification.
Book ChapterDOI
Synthesis, Structure and Properties of μ-η2:η2 Peroxo Dinuclear Copper Complexes Modeling the Active Site of Oxyhemocyanin and Oxytyrosinase
TL;DR: The absorption spectrum of oxyhemocyanin exhibits two characteristic bands, one at ~580 nm with e~1000 M-1cm-1 and an intense transition at 350 nm, e~20000 M 1 cm-1 as discussed by the authors.
Journal ArticleDOI
Bond Length Contraction in Zinc-Triad Complexes Ligated by Hydrotris(pyrazolyl)borate: [M(Cl){HB(3,5-iPr2pz)3}] (M = ZnII, CdII, and HgII)
TL;DR: Bond length contraction in zinc-triad chloro complexes, which were characterized by X-ray crystallography and metal-halogen stretching frequency, was reported in this paper, where the authors considered the case of a single element.
Journal ArticleDOI
Low-temperature optical spectroscopy of cobalt-substituted hemocyanin from carcinus-maenas
Eugenio Vitrano,Antonio Cupane,Maurizio Leone,Valeria Militello,Lorenzo Cordone,Benedetto Salvato,Mariano Beltramini,Luigi Bubacco,Gian Paolo Rocco +8 more
TL;DR: In this paper, the optical absorption spectra of three cobalt-substituted derivatives of hemocyanin (He) from Carcinus maenas, in the temperature range 300-20 K, were analyzed.