Conformational preferences of modified uridines: comparison of AMBER derived force fields.

作者: Indrajit Deb , Joanna Sarzynska , Lennart Nilsson , Ansuman Lahiri

DOI: 10.1021/CI400582A

关键词: RNAForce field (chemistry)Computational chemistryMolecular dynamicsNucleic acid structurePseudouridineChemistryMolecular conformationDihydrouridineThermodynamics

摘要: The widespread occurrence of modified residues in RNA sequences necessitates development accurate parameters for these modifications reliable modeling structure and dynamics. A comprehensive set the 107 naturally occurring was proposed by Aduri et al. (J. Chem. Theory Comput. 2007, 3, 1464-1475) AMBER FF99 force field. In this work, we tested on a uridine residues, namely, dihydrouridine, 2-thiouridine, 4-thiouridine, pseudouridine, uridine-5-oxyacetic acid, performing molecular dynamics replica exchange simulations nucleosides. Although our using field did not, general, reproduce experimentally observed conformational characteristics well, combination parameter with recent revisions showed noticeable improvement some

参考文章(86)
M. Sundaralingam, S. T. Rao, J. Abola, Molecular Conformation of Dihydrouridine: Puckered Base Nucleoside of Transfer RNA Science. ,vol. 172, pp. 725- 727 ,(1971) , 10.1126/SCIENCE.172.3984.725
Itaru Okamoto, Shiqi Cao, Hiroto Tanaka, Kohji Seio, Mitsuo Sekine, Synthesis of 4-Thiopseudoisocytidine and 4-Thiopseudouridine as Components of Triplex-forming Oligonucleotides Chemistry Letters. ,vol. 38, pp. 174- 175 ,(2009) , 10.1246/CL.2009.174
F. E. Hruska, K. K. Ogilvie, A. A. Smith, H. Wayborn, Molecular Conformation of 4-Thiouridine in Aqueous Solution Canadian Journal of Chemistry. ,vol. 49, pp. 2449- 2452 ,(1971) , 10.1139/V71-400
Wayne A Decatur, Maurille J Fournier, rRNA modifications and ribosome function. Trends in Biochemical Sciences. ,vol. 27, pp. 344- 351 ,(2002) , 10.1016/S0968-0004(02)02109-6
Hanna Sierzputowska-Gracz, Elzbieta Sochacka, Andrzej Malkiewicz, Kenneth Kuo, Charles W. Gehrke, Paul F. Agris, Chemistry and structure of modified uridines in the anticodon, wobble position of transfer RNA are determined by thiolation Journal of the American Chemical Society. ,vol. 109, pp. 7171- 7177 ,(1987) , 10.1021/JA00257A044