Ribonucleosides, Aminoacyl-, and Peptidyl-RNA: Synthesis, Thermodynamics, and Structure   Minireview: Ribonucleosides, RNA and peptides are prepared to study non-covalent interactions of RNA, aminoacyl-, and peptidyl-RNA. Techniques used include chemical synthesis in solution and on solid supports, UV- and NMR-detected thermal denaturation, X-ray crystallography and ¹H-NMR spectroscopy for conformational studies, assisted by force-field and ab initio calculations.