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The text explains why simulations became widely used: they provide time-dependent particle motions for detailed property questions and allow user-controlled potentials for isolating the impact of specific force-field contributions, including free-energy calculations via “computer alchemy.” It then outlines three application types: sampling and refinement, equilibrium averages and thermodynamics with Boltzmann weighting, and true dynamical studies requiring accurate time development representation.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/research-report/","Research & 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on acid-free paper.  \nHeadquarters  \nMarcel Dekker, Inc.  \n270 Madison Avenue, New York, NY 10016 tel: 212-696-9000; fax: 212-685-4540  \nEastern Hemisphere Distribution  \nMarcel Dekker AG  \nHutgasse 4, Postfach 812, CH-4001 Basel, Switzerland tel: 41-61-261-8482; fax: 41-61-261-8896  \nWorld Wide Web  \n[http://www.dekker.com](http://www.dekker.com)  \nThe publisher offers discounts on this book when ordered in bulk quantities. For more information, write to Special Sales/Professional Marketing at the headquarters address above.  \nCopyright 􀀁 2001 by Marcel Dekker, Inc. All Rights Reserved.  \nNeither this book nor any part may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, microfilming, and recording, or by any information storage and retrieval system, without permission in writing from the publisher.  \nCurrent printing (last digit):  \n10 9 8 7 6 5 4 3 2 1  \nPRINTED IN THE UNITED STATES OF AMERICA  \nForeword  \nThe long-range goal of molecular approaches to biology is to describe living systems in terms of chemistry and physics. Over the last 70 years great progress has been made in applying the quantum mechanical equations representing the underlying physical laws to chemical problems involving the structures and reactions of small molecules. This work was recognized in the awarding of the Nobel Prize in Chemistry to Walter Kohn and John Pople in 1998 . Computational studies of mesoscopic systems of biological interest have been attempted only more recently. Classical mechanics is adequate for describing most of the properties of these systems, and the molecular dynamics simulation method is the most important theoretical approach used in such studies. The first molecular dynamics simulation of a protein, the bovine pancreatic trypsin inhibitor (BPTI), was published more than 20 years ago [1] . Although the simulation was ‘‘crude’’ by present standards, it was important because it introduced an important conceptual change in our view of biomolecules. The classic view of biopolymers, like proteins and nucleic acids, had been static in character. The remarkable detail evident in the protein crystal structures available at that time led to an image of ‘‘rigid’’ biomolecules with every atom fixed in place [2] . The molecular dynamics simulation of BPTI was instrumental in changing the static view of the structure of biomolecules to a dynamic picture. It is now recognized that the atoms of which biopolymers are composed are in a state of constant motion at ordinary temperatures. The X-ray structure of a protein provides the average atomic positions, but the atoms exhibit fluidlike motions of sizable amplitudes about these averages. The new understanding of protein dynamics subsumed the static picture in that the average positions are still useful for the discussion of many aspects of biomolecule function in the language of structural chemistry. The recognition of the importance of fluctuations opened the way for more sophisticated and accurate interpretations of functional properties.  \nIn the intervening years, molecular dynamics simulations of biomolecules have undergone an explosive development and been applied to a wide range of problems [3,4] . Two attributes of molecular dynamics simulations have played an essential role in their increasing use. The first is that simulations provide individual particle motions as a function of time so they can answer detailed questions about the properties of a system, often more easily than experiments. For many aspects of biomolecule function, it is these details  \niv Foreword  \nthat are of interest (e.g., by what pathways does oxygen get into and exit the heme pocket in myoglobin? How does the conformational change that triggers activity of ras p21 take place?) . The second attribute is that, although the potential used in the simulations is approximate, it is completely under the user’s control,","cbCain5hbxSimqok","https://ap.wps.com/l/cbCain5hbxSimqok","pdf",5585436,525,"English","# Foreword\n## Goals and historical progress\n## Why molecular dynamics simulations are powerful\n## Three application types in macromolecular studies","[{\"question\":\"What is the long-range goal described in the foreword?\",\"answer\":\"To describe living systems in terms of chemistry and physics.\"},{\"question\":\"Why was the early BPTI molecular dynamics simulation important?\",\"answer\":\"It introduced a conceptual shift from viewing biopolymers as static to viewing them as dynamic, with atoms in constant motion.\"},{\"question\":\"What are the three types of applications of molecular dynamics simulation methods mentioned?\",\"answer\":\"Sampling conformation space to determine or refine structures, computing equilibrium averages and thermodynamics with proper Boltzmann weighting, and examining actual dynamics requiring proper time development representation.\"}]","Foreword - Molecular Dynamics Simulation Methods for Biomolecules | PDF",1789975925,1323]