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Pregled bibliografske jedinice broj: 805933

Elucidation of the binding sites of two novel Ru(II) complexes on bovine serum albumin

Nišavić, Marija; Masnikosa, Romana; Butorac, Ana; Perica, Kristina; Rilak, Ana; Korićanac, Lela; Hozić, Amela; Petković, Marijana; Cindrić, Mario
Elucidation of the binding sites of two novel Ru(II) complexes on bovine serum albumin // Journal of inorganic biochemistry, 159 (2016), 89-95 doi:10.1016/j.jinorgbio.2016.02.034 (međunarodna recenzija, članak, znanstveni)

Elucidation of the binding sites of two novel Ru(II) complexes on bovine serum albumin

Nišavić, Marija ; Masnikosa, Romana ; Butorac, Ana ; Perica, Kristina ; Rilak, Ana ; Korićanac, Lela ; Hozić, Amela ; Petković, Marijana ; Cindrić, Mario

Journal of inorganic biochemistry (0162-0134) 159 (2016); 89-95

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Ruthenium complex ; anticancer drug ; meridional geometry ; MALDI MS ; protein binding site ; metallodrug protein binding

Hyphenated mass spectrometry (MS) techniques have attained an important position in analysis of covalent and non-covalent interactions of metal complexes with peptides and proteins. The aim of the present study was to qualitatively and quantitatively determine ruthenium binding sites on a protein using tandem mass spectrometry and allied techniques, i.e. liquid chromatography (LC) and inductively coupled plasma optical emission spectrometry (ICP-OES). For that purpose, two newly synthesized Ru(II) complexes of a meridional geometry, namely mer- [Ru(4′ Cl-tpy)(en)Cl]+ (1) and mer-[Ru(4′ Cl- tpy)(dach)Cl]+ (2) (where 4′ Cl-tpy = 4′- chloro-2, 2′:6′, 2″-terpyridine, en = 1, 2- diaminoethane and dach = 1, 2- diaminocyclohexane), and bovine serum albumin were used. The binding of the complexes to the protein was investigated by means of size exclusion- and reversed phase-LC, ICP OES, matrix-assisted laser desorption ionization MS and MS/MS. Ruthenated peptide sequence and a binding target amino acid were revealed through accurate elucidation of MS/MS spectra. The results obtained in this study suggest a high binding capacity of the protein towards both complexes, with up to 5.77 ± 0.14 and 6.95 ± 0.43 mol of 1 and 2 bound per mol of protein, respectively. The proposed binding mechanism for the selected complexes includes the release of Cl ligand, its replacement with water molecule and further coordination to electron donor histidine residue.

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Institut "Ruđer Bošković", Zagreb

Časopis indeksira:

  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus

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  • BIOSIS Previews (Biological Abstracts)