"Williamson, James R." . "Munzarov\u00E1, Mark\u00E9ta" . . . "Mereni skalarnich interakcnich konstant 1H - 19F dalekeho dosahu a jejich zavislosti na glykosidickem uhlu v 5-fluoropyrimidin substituovane RNA"@cs . "Long range scalar 5J(H1',F) couplings were observed in 5-fluoropyrimidine substituted RNA. We developed a novel S3E-19F-\u0143,\u0147-edited NOESY experiment for quantitation of these long range scalar 5J(H1',F), where the J-couplings can be extracted from inspection of intraresidual (H1',H6) NOE crosspeaks. The 5J(H1',F) couplings can be used to restrict the glycosidic torsion angle \u00D3 which defines the orientation of the base with respect to the ribose sugar moiety. Quantum chemical calculations were exploited to investigate the relation between scalar couplings and conformations around the glycosidic bond in oligonucleotides. The theoretical dependence of the observed 5J(H1',F) couplings on the torsion angle \u00D3 can be described by a generalized Karplus relationship. The corresponding density functional theory (DFT) analysis is outlined. Additional NMR experiments facilitating the resonance assignments of 5-fluoropyrimidine substituted RNAs are described and chemical shift changes due to altered shielding in th"@en . . . "RIV/00216224:14310/06:00016826!RIV08-MSM-14310___" . . . "Journal of the American Chemical Society" . "14310" . . "Three-Bond Sugar-Base Couplings in Purine versus Pyrimidine Nucleosides: A DFT Study of Karplus Relationships for 3JC2/4-H1' and 3JC6/8-H1' in DNA" . . "Scalar Coupling Constants; Fluorine; 5-Fluorouridine; 5-Fluorocytidine; HIV-TAR RNA"@en . . "CZ - \u010Cesk\u00E1 republika" . "2"^^ . "Hennig, Mirko" . "503853" . "17" . "Three-Bond Sugar-Base Couplings in Purine versus Pyrimidine Nucleosides: A DFT Study of Karplus Relationships for 3JC2/4-H1' and 3JC6/8-H1' in DNA"@en . "Three-Bond Sugar-Base Couplings in Purine versus Pyrimidine Nucleosides: A DFT Study of Karplus Relationships for 3JC2/4-H1' and 3JC6/8-H1' in DNA" . "5851-5858" . "128" . "8"^^ . "Long range scalar 5J(H1',F) couplings were observed in 5-fluoropyrimidine substituted RNA. We developed a novel S3E-19F-\u0143,\u0147-edited NOESY experiment for quantitation of these long range scalar 5J(H1',F), where the J-couplings can be extracted from inspection of intraresidual (H1',H6) NOE crosspeaks. The 5J(H1',F) couplings can be used to restrict the glycosidic torsion angle \u00D3 which defines the orientation of the base with respect to the ribose sugar moiety. Quantum chemical calculations were exploited to investigate the relation between scalar couplings and conformations around the glycosidic bond in oligonucleotides. The theoretical dependence of the observed 5J(H1',F) couplings on the torsion angle \u00D3 can be described by a generalized Karplus relationship. The corresponding density functional theory (DFT) analysis is outlined. Additional NMR experiments facilitating the resonance assignments of 5-fluoropyrimidine substituted RNAs are described and chemical shift changes due to altered shielding in th" . "RIV/00216224:14310/06:00016826" . "Bermel, Wolfgang" . . "6"^^ . "P(LN00A016), Z(MSM0021622413)" . "Scott, Lincol G." . "[170CE2DED8B6]" . . . . "Sklen\u00E1\u0159, Vladim\u00EDr" . "Three-Bond Sugar-Base Couplings in Purine versus Pyrimidine Nucleosides: A DFT Study of Karplus Relationships for 3JC2/4-H1' and 3JC6/8-H1' in DNA"@en . "0002-7863" . "Interakcni skalarni interakce dalekeho dosahu byly pozorovany v 5-fluor substituovane RNA.Vyvinuly jsme novy NMR experiment pro kvantifikaci techto konstant. DFT vypocty byly pouzity pro studium zavislosti interakci pres 5 vazeb na glykosidickem uhlu."@cs . . "Mereni skalarnich interakcnich konstant 1H - 19F dalekeho dosahu a jejich zavislosti na glykosidickem uhlu v 5-fluoropyrimidin substituovane RNA"@cs . . . . . . .