Electron paramagnetic resonance and optical spectroscopic study of the Cu2+-tRNA system.
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.
Cannistraro
S
S
Giugliarelli
G
G
Onori
G
G
Rongoni
E
E
D001665:Binding Sites; D003300:Copper / Q000378:metabolism*; D004578:Electron Spin Resonance Spectroscopy; D012331:RNA, Fungal / Q000378:metabolism; D012343:RNA, Transfer / Q000378:metabolism*; D013053:Spectrophotometry
D012331:RNA, Fungal; D003300:Copper; D012343:RNA, Transfer