ISSN:
1432-1017
Keywords:
Nucleosides
;
Conformation
;
HRNMR
;
Relaxation
;
NOE
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Physics
Notes:
Abstract The solution conformations of adenosine, guanosine and inosine in liquid ND3 have been determined by NMR. Comparison of the Karplus analysis of the proton HR spectra of the ribose moiety obtained in this solvent with the data from aqueous solutions of A and I proves that the conformations of the nucleosides are very similar in both liquids. From the analysis of the vicinal coupling constants of the ring protons it has been deduced that the S state C(2′)-endo is slightly preferred. The mole fraction in S approximates 0.6 for all three nucleosides. C-13 relaxation measurements have been applied in the determination of the correlation times for rotational diffusion. Only at temperatures below −40
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00539774
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