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pubmed-article:16089566pubmed:abstractTextTo gain a deeper insight into cellular processes such as transcription and translation, one needs to uncover the mechanisms controlling the configurational changes of nucleic acids. As a step toward this aim, we present here a mesoscopic-level computational model that provides a new window into nucleic acid dynamics. We model a single-stranded nucleic as a polymer chain whose monomers are the nucleosides. Each monomer comprises a bead representing the sugar molecule and a pin representing the base. The bead-pin complex can rotate about the backbone of the chain. We consider pairwise stacking and hydrogen-bonding interactions. We use a modified Monte Carlo dynamics that splits the dynamics into translational bead motion and rotational pin motion. By performing a number of tests, we first show that our model is physically sound. We then focus on a study of the kinetics of a DNA hairpin--a single-stranded molecule comprising two complementary segments joined by a noncomplementary loop--studied experimentally. We find that results from our simulations agree with experimental observations, demonstrating that our model is a suitable tool for the investigation of the hybridization of single strands.lld:pubmed
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pubmed-article:16089566pubmed:dateRevised2010-9-20lld:pubmed
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pubmed-article:16089566pubmed:articleTitleMesoscopic modeling for nucleic acid chain dynamics.lld:pubmed
pubmed-article:16089566pubmed:affiliationDepartment Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA.lld:pubmed
pubmed-article:16089566pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:16089566pubmed:publicationTypeComparative Studylld:pubmed
pubmed-article:16089566pubmed:publicationTypeResearch Support, U.S. Gov't, P.H.S.lld:pubmed
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