Vibrational study on the cobalt binding mode of carnosine (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Vibrational study on the cobalt binding mode of carnosine (Articolo in rivista) (literal)

Anno

• 2002-01-01T00:00:00+01:00 (literal)

Alternative label

• Torreggiani A., Taddei P., Tinti A., Fini G. (2002)
  Vibrational study on the cobalt binding mode of carnosine
  in Journal of molecular structure (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Torreggiani A., Taddei P., Tinti A., Fini G. (literal)

Pagina inizio

• 61 (literal)

Pagina fine

• 70 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 641 (literal)

Rivista

• Journal of molecular structure (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto

• The Co(II)-L-Carnosine (Carnos) system was investigated at different pH and metal /ligand molar ratios by Raman and IR spectroscopy. Raman spectra present some marker bands yielding information on the ability of the Co(II) / Carnos system to bind molecular oxygen and to identify the metal co-ordination site of the imidazole ring (Np or Nt atom) of Carnos. The existence of different oxygenated species is greatly affected by pH and the structure of the predominant complexes depends on the available nitrogen atoms. Under basic conditions, binuclear complexes binding molecular oxygen are the predominat species and two forms (monobridged and dibridged) were identified by the Raman nO-O band (750-850 cm-1). Decreasing pH to 7, the species present in the system are less able to bind oxygen. Hydrogen peroxide and a Co(III) chelate not binding O2, were formed with a significant conversion of peroxo into superoxo complexes. A slight excess of Carnos does not enhance metal chelation. In slightly acidic conditions, the formation of H2O2 and superoxo species is more enhanced than at pH 7 and another Co(III) chelate is probably formed. (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Istituto I.S.O.F. (C.N.R.), via P. Gobetti 101, 40129 Bologna, Italy. Sezione di Chimica e Propedeutica Biochimica, Department of Biochemistry, University of Bologna, via Belmeloro 8/2, 40126 Bologna, Italy. (literal)

Titolo

• Vibrational study on the cobalt binding mode of carnosine (literal)

Abstract

• The Co(II)-L-Carnosine (Carnos) system was investigated at different pH and metal/ligand molar ratios by Raman and IR spectroscopy. Raman spectra present some marker bands yielding information on the ability of the Co(II)/Carnos system to bind molecular oxygen and to identify the metal co-ordination site of the imidazole ring (Np or Nt atom) of Carnos. The existence of different oxygenated species is greatly affected by pH and the structure of the predominant complexes depends on the available nitrogen atoms. Under basic conditions, binuclear complexes binding molecular oxygen are the predominant species and two forms (monobridged and dibridged) were identified by the Raman nO-O band (750-850 cm21). Decreasing pH to 7, the species present in the system are less able to bind oxygen. Hydrogen peroxide and a Co(III) chelate not binding O2, were formed with a significant conversion of peroxo into superoxo complexes. A slight excess of Carnos does not enhance metal chelation. In slightly acidic conditions, (literal)

Prodotto di

• Sintesi e caratterizzazione di standard peptidici e peptidomimetici (PM.P06.012.004) (Modulo)
• Institute for organic syntheses and photoreactivity (ISOF) (Istituto)

Autore CNR

• ARMIDA TORREGGIANI (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "Vibrational study on the cobalt binding mode of carnosine" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute for organic syntheses and photoreactivity (ISOF) (Istituto)
• Sintesi e caratterizzazione di standard peptidici e peptidomimetici (PM.P06.012.004) (Modulo)

Autore CNR di

• ARMIDA TORREGGIANI (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of molecular structure (Rivista)

Insieme di parole chiave di

• Parole chiave di "Vibrational study on the cobalt binding mode of carnosine" (Insieme di parole chiave)