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UV-induced reduction of Cu(II) in DNA complex studied by Cu-K-edge XANES.

Rongoni, E; Scafati, A; Matzeu, M; Belli, M; Onori, G; Reale, A; Balerna, A; Bianconi, A; Bernieri, E.

Biopolymers ; 25(2): 217-21, 1986 Feb.

Article in English | MEDLINE | ID: mdl-3955187

Subject(s)

Copper/radiation effects , DNA/radiation effects , Ultraviolet Rays , Animals , Cattle , Oxidation-Reduction , Spectrophotometry, Atomic/methods , Thymus Gland

Electron paramagnetic resonance and optical spectroscopic study of the Cu2+-tRNA system.

Cannistraro, S; Giugliarelli, G; Onori, G; Rongoni, E.

Biophys Chem ; 22(1-2): 107-13, 1985 Jun.

Article in English | MEDLINE | ID: mdl-2992619

ABSTRACT

The interaction of copper ions with tRNA has been studied by optical and EPR spectroscopies. The interaction results in two different paramagnetic complexes characterized by a tetragonal symmetry of the ligand electric field sensed by the ions. The complete set of the spin Hamiltonian parameters has been extracted by computer simulation with the Monte Carlo method. Hypotheses concerning the putative ligands are put forward.

Subject(s)

Copper/metabolism , RNA, Transfer/metabolism , Binding Sites , Electron Spin Resonance Spectroscopy , RNA, Fungal/metabolism , Spectrophotometry

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