2001
Conformational behavior of nucleotide-sugar in solution: Molecular dynamics and NMR study of solvated uridinediphosphate-glucose in the presence of monovalent cations
PETROVÁ, Pavla, Celine MONTEIRO, Catherine HERVE DU PENHOAT, Jaroslav KOČA, Anne IMBERTY et. al.Základní údaje
Originální název
Conformational behavior of nucleotide-sugar in solution: Molecular dynamics and NMR study of solvated uridinediphosphate-glucose in the presence of monovalent cations
Autoři
PETROVÁ, Pavla, Celine MONTEIRO, Catherine HERVE DU PENHOAT, Jaroslav KOČA a Anne IMBERTY
Vydání
Biopolymers, John Wiley & Sons, Inc, 2001, 0006-3525
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 1.845
Kód RIV
RIV/00216224:14310/01:00004134
Organizační jednotka
Přírodovědecká fakulta
Klíčová slova anglicky
cations; molecular dynamics; NMR spectroscopy; nucleotide-sugars; UDP-glucose
Změněno: 5. 4. 2001 10:26, prof. RNDr. Jaroslav Koča, DrSc.
Anotace
V originále
The nucleotide-sugars are metabolites of primary importance in the biosynthesis of polysaccharides and glycoconjugates since they serve as sugar donors in the reactions of glycosyltransferases, enzymes that displays a high specificity for both donors and acceptors. In order to determine the conformational behavior of uridinediphosphoglucose in dilute aqueous solution that includes a physiologically relevant concentration of salt, parallel NMR and molecular modeling investigations have been conducted. Nine molecular dynamics trajectories of 3 ns each were calculated in presence of explicit water and monovalent cations with the use of the AMBER force field with recently developed energy parameters for nucleotide-sugars (P. Petrova, J. Koca, and A. Imberty, Journal of American Chemical Society, 1999, vol. 121, pp. 5535-5547). Theoretical nuclear Overhauser effect data were calculated from these simulations using a model-free approach that takes into account internal motions. Comparison of theoretical and experimental data gives excellent agreement for the region surrounding the glucose-phosphate linkage including the pyrophosphate linkage itself. Less satisfactory agreement is obtained for the ribose ring and the base orientations. On the whole, both NMR and molecular dynamics simulations predict the molecule to be flexible, and to visit a large number of conformations while maintaining an extended overall shape
Návaznosti
MSM 143100005, záměr |
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