Molecular Dynamics Simulations: Concept, Methods, and Applications

Molecular dynamics (MD) is a computer simulation that deals with biological molecules, such as proteins and nucleic acid, and visualizes their movement in atoms and molecules. Computer simulation is executed with these atoms and molecules that are capable of interacting with each other over time and thereby can define the dynamic evolution of the system. MD simulation mimics the changes in biological molecules’ structures over a given time, giving us atomic insights into the change in structure. This data helps us understand biological functions. These simulations give us comprehensive information about the fluctuations and flexibility of the proteins and nucleic acids under study. These approaches are applied to thoroughly study the organization and dynamics of biological molecules, their complexes, and conformational changes in proteins and nucleic acids. Many mysteries, on the femtoseconds scale, have been revealed through the study of these conformational changes. These methods are applied in chemical physics, materials science, and biophysics. MD simulations are often used in computational biology to generate a comprehensive understanding of interactions between proteins and their ligands and address how much these interactions are flexible and shape conformational changes in molecules when a particular mutation is introduced. Currently, it is being used to determine the tertiary structure of proteins from x-ray crystallography and NMR (or Nuclear Magnetic Resonance, a technique used in analytical chemistry for determining the structural properties and purity of samples) experiments. The molecular dynamics simulation process. The code of this chapter is 01001101 01101111 01101100 01100101 01100011 01110101 01101100 01100001 01110010 00100000 01100100 01111001 01101110 01100001 01101101 01101001 01100011 01110011 00100000.