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Literature DB >> 6272712

Dependence on freezing of the geometry and redox potential of type 1 and type 2 copper sites of Japanese-lacquer-tree (Rhus vernicifera) laccase.

L Morpurgo, L Calabrese, A Desideri, G Rotilio.

Abstract

The room-temperature e.p.r. spectrum of the Japanese-lacquer-tree (Rhus vernicifera) laccase shows A parallel (the hyperfine splitting constant) and g parallel values of both the Type 1 and Type 2 Cu appreciably different from those measured at liquid-N2 temperature. The geometry of the sites, as inferred from the room-temperature e.p.r. parameters, is more consistent with their redox properties. A rough correlation is found between A parallel and g parallel values and redox potential of the blue copper in several enzymes.

Entities: Chemical Species

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Year: 1981 PMID： 6272712 PMCID： PMC1162643 DOI： 10.1042/bj1930639

Source DB: PubMed Journal: Biochem J ISSN： 0264-6021 Impact factor: 3.857

19 in total

1. A ferrocyanide charge-transfer complex of bovine superoxide dismutase. Relevance of the zinc imidazolate bond to the redox properties of the enzyme.

Authors: L Morpurgo; I Mavelli; L Calabrese; A F Agrò; G Rotilio
Journal: Biochem Biophys Res Commun Date: 1976-05-17 Impact factor: 3.575

2. Stereochemistry of anion complexes of type 2 Cu(II) in Rhus vernicifera laccase. Analogy with superoxide dismutase and Cu(II) carbonic anhydrase.

Authors: A Desideri; L Morpurgo; G Rotilio; B Mondovì
Journal: FEBS Lett Date: 1979-02-15 Impact factor: 4.124

3. Studies of the metal sites of copper proteins. V. A model compound for the copper site of superoxide dismutase.

Authors: L Morpurgo; C Giovagnoli; G Rotilio
Journal: Biochim Biophys Acta Date: 1973-10-18

4. The stoichiometry of the paramagnetic copper and the oxidation-reduction potentials of type I copper in human ceruloplasmin.

Authors: J Deinum; T Vänngård
Journal: Biochim Biophys Acta Date: 1973-06-15

5. Oxidation-reduction potentials of the electron acceptors in laccases and stellacyanin.

Authors: B R Reinhammar
Journal: Biochim Biophys Acta Date: 1972-08-17

6. Anion binding to bovine erythrocyte superoxide dismutase. Evidence for multiple binding sites with qualitatively different properties.

Authors: J A Fee; B P Gaber
Journal: J Biol Chem Date: 1972-01-10 Impact factor: 5.157

6. Low-temperature resonance-Raman spectra of Japanese-lacquer-tree (Rhus vernicifera) laccase, type-2-copper-depleted laccase and H2O2-treated type-2-copper-depleted laccase.

Authors: G Musci; A Desideri; L Morpurgo; A Garnier-Suillerot; L Tosi
Journal: Biochem J Date: 1983-08-01 Impact factor: 3.857

6 in total

Dependence on freezing of the geometry and redox potential of type 1 and type 2 copper sites of Japanese-lacquer-tree (Rhus vernicifera) laccase.

1. A ferrocyanide charge-transfer complex of bovine superoxide dismutase. Relevance of the zinc imidazolate bond to the redox properties of the enzyme.

2. Stereochemistry of anion complexes of type 2 Cu(II) in Rhus vernicifera laccase. Analogy with superoxide dismutase and Cu(II) carbonic anhydrase.

3. Studies of the metal sites of copper proteins. V. A model compound for the copper site of superoxide dismutase.

4. The stoichiometry of the paramagnetic copper and the oxidation-reduction potentials of type I copper in human ceruloplasmin.

5. Oxidation-reduction potentials of the electron acceptors in laccases and stellacyanin.

6. Anion binding to bovine erythrocyte superoxide dismutase. Evidence for multiple binding sites with qualitatively different properties.

7. The optical and magnetic properties of copper in Chenopodium album plastocyanin.

8. Effect of pH on electron-paramagnetic-resonance spectra of ceruloplasmin.

9. Oxidation-reduction potential of the ferro-ferricyanide system in buffer solutions.

10. Metalloenzymes: the entatic nature of their active sites.

1. Sequential reconstitution of copper sites in the multicopper oxidase CueO.

2. Spectroscopic studies of the type 2 and type 3 copper centres in the mercury derivative of laccase.

3. Multi-frequency e.p.r. studies of a mercury-containing mixed-metal derivative of laccase.

4. A comparative study of bovine, porcine and yeast superoxide dismutases.

5. NMR study of the exchange coupling in the trinuclear cluster of the multicopper oxidase Fet3p.

6. Low-temperature resonance-Raman spectra of Japanese-lacquer-tree (Rhus vernicifera) laccase, type-2-copper-depleted laccase and H2O2-treated type-2-copper-depleted laccase.