Nuclear magnetic resonance of the paramagnetic solution involving stable free radicals. 13. PMR studies of specific association of nucleic acid constituent bases in a nonaqueous solvent. Utility of DTBN radical to probe the affinity of hydrogen bonding involved in complementary base pairs

1977 ◽  
Vol 99 (13) ◽  
pp. 4299-4305 ◽  
Author(s):  
Isao Morishima ◽  
Toshio Inubushi ◽  
Teijiro Yonezawa ◽  
Yoshimasa Kyogoku
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Hydrogen Bonding ◽  
Free Radicals ◽  
Nucleic Acid ◽  
Magnetic Resonance ◽  
Nonaqueous Solvent ◽  
Base Pairs ◽  
Paramagnetic Solution ◽  
Specific Association ◽  
Stable Free Radicals

Substitutional and solvation effects on conformational equilibria. Effects on the interaction between opposing axial oxygen atoms

1969 ◽  
Vol 47 (23) ◽  
pp. 4441-4446 ◽  
Author(s):  
R. U. Lemieux ◽  
A. A. Pavia
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Hydrogen Bonding ◽  
Magnetic Resonance ◽  
Hydroxyl Groups ◽  
Evidence Based ◽  
Electrostatic Repulsion ◽  
Hydrogen Bridge ◽  
Conformational Equilibria ◽  
Free Hydroxyl ◽  
Oxygen Atoms

Evidence based both on nuclear magnetic resonance and rotation data primarily obtained from methyl 3-deoxy-β-L-erythro-pentopyranoside and a number of its derivatives is interpreted to show that the electrostatic repulsion between the oxygen atoms at the 2 and 4 positions is substantially less when these oxygens are linked to acyl groups than when in the form of either methyl ethers or as hydroxyl groups hydrogen bonded to solvent. Also, experimental evidence is presented which requires the hydrogen bridge between two axially disposed hydroxyl groups to be substantially strengthened by hydrogen bonding of the free hydroxyl by solvent.

Hydrogen Bonding Effects on the 15N and 1H Shielding Tensors in Nucleic Acid Base Pairs

2000 ◽  
Vol 145 (1) ◽  
pp. 142-146 ◽  
Author(s):  
Jiřı́ Czernek ◽  
Radovan Fiala ◽  
Vladimı́r Sklenář
Keyword(s):  
Hydrogen Bonding ◽  
Nucleic Acid ◽  
Acid Base ◽  
Base Pairs ◽  
Nucleic Acid Base ◽  
Shielding Tensors

Hydrogen bonding in the carboxyl-terminal half-fragment 78-148 of calmodulin as studied by two-dimensional nuclear magnetic resonance

Biochemistry ◽  
1985 ◽  
Vol 24 (16) ◽  
pp. 4264-4269 ◽  
Author(s):  
Mitsuhiko Ikura ◽  
Osamu Minowa ◽  
Kunio Hikichi
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Hydrogen Bonding ◽  
Magnetic Resonance ◽  
Two Dimensional ◽  
Carboxyl Terminal ◽  
Nuclear Magnetic
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