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      Rational Prediction with Molecular Dynamics for Hit Identification

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          Abstract

          Although the motions of proteins are fundamental for their function, for pragmatic reasons, the consideration of protein elasticity has traditionally been neglected in drug discovery and design. This review details protein motion, its relevance to biomolecular interactions and how it can be sampled using molecular dynamics simulations. Within this context, two major areas of research in structure-based prediction that can benefit from considering protein flexibility, binding site detection and molecular docking, are discussed. Basic classification metrics and statistical analysis techniques, which can facilitate performance analysis, are also reviewed. With hardware and software advances, molecular dynamics in combination with traditional structure-based prediction methods can potentially reduce the time and costs involved in the hit identification pipeline.

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          Most cited references87

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          The meaning and use of the area under a receiver operating characteristic (ROC) curve.

          A representation and interpretation of the area under a receiver operating characteristic (ROC) curve obtained by the "rating" method, or by mathematical predictions based on patient characteristics, is presented. It is shown that in such a setting the area represents the probability that a randomly chosen diseased subject is (correctly) rated or ranked with greater suspicion than a randomly chosen non-diseased subject. Moreover, this probability of a correct ranking is the same quantity that is estimated by the already well-studied nonparametric Wilcoxon statistic. These two relationships are exploited to (a) provide rapid closed-form expressions for the approximate magnitude of the sampling variability, i.e., standard error that one uses to accompany the area under a smoothed ROC curve, (b) guide in determining the size of the sample required to provide a sufficiently reliable estimate of this area, and (c) determine how large sample sizes should be to ensure that one can statistically detect differences in the accuracy of diagnostic techniques.
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            A semiempirical free energy force field with charge-based desolvation.

            The authors describe the development and testing of a semiempirical free energy force field for use in AutoDock4 and similar grid-based docking methods. The force field is based on a comprehensive thermodynamic model that allows incorporation of intramolecular energies into the predicted free energy of binding. It also incorporates a charge-based method for evaluation of desolvation designed to use a typical set of atom types. The method has been calibrated on a set of 188 diverse protein-ligand complexes of known structure and binding energy, and tested on a set of 100 complexes of ligands with retroviral proteases. The force field shows improvement in redocking simulations over the previous AutoDock3 force field.
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              Cramming More Components Onto Integrated Circuits

              G.E. Moore (1998)
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                Author and article information

                Journal
                Curr Top Med Chem
                Curr Top Med Chem
                CTMC
                Current Topics in Medicinal Chemistry
                Bentham Science Publishers
                1568-0266
                1873-4294
                September 2012
                September 2012
                : 12
                : 18
                : 2002-2012
                Affiliations
                [1 ]University of California, San Diego Department of Pharmacology
                [2 ]University of California, San Diego Department of Chemistry and Biochemistry
                [3 ]Howard Hughes Medical Institute
                Author notes
                [* ]Address correspondence to this author at the University of California, San Diego, Howard Hughes Medical Institute, 9500 Gilman Drive, Urey Hall 4202, M/C 0365, La Jolla, CA 92093-0365, USA; Tel: (858) 822-1469; Fax: (858) 534-4974; E-mail: senichols@ 123456ucsd.edu
                [+]

                These authors contributed equally to this work.

                Article
                CTMC-12-2002
                10.2174/156802612804910313
                3636520
                23110535
                14fa6fa8-41f1-445d-ac42-45405573bab8
                © 2012 Bentham Science Publishers

                This is an open access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.5/), which permits unrestrictive use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 27 July 2012
                : 27 August 2012
                : 27 August 2012
                Categories
                Article

                Pharmaceutical chemistry
                docking,drug design,statistical performance analysis.,validation,flexibility,molecular dynamics,computational methods,structure-based prediction

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