The use of manganese as a probe for elucidating the role of magnesium ions in ribozymes.

MeSH Terms: Base Sequence, Binding Sites, Crystallography, Electron Spin Resonance Spectroscopy, Magnesium, Magnetic Resonance Spectroscopy, Manganese, Models, Molecular, Molecular Probe Techniques, Nucleic Acid Conformation, RNA, Catalytic, Thionucleotides