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Journal ArticleDOI

PTRAJ and CPPTRAJ: Software for Processing and Analysis of Molecular Dynamics Trajectory Data

TLDR
PTRAJ and its successor CPPTRAJ are described, two complementary, portable, and freely available computer programs for the analysis and processing of time series of three-dimensional atomic positions and the data therein derived.
Abstract
We describe PTRAJ and its successor CPPTRAJ, two complementary, portable, and freely available computer programs for the analysis and processing of time series of three-dimensional atomic positions (i.e., coordinate trajectories) and the data therein derived. Common tools include the ability to manipulate the data to convert among trajectory formats, process groups of trajectories generated with ensemble methods (e.g., replica exchange molecular dynamics), image with periodic boundary conditions, create average structures, strip subsets of the system, and perform calculations such as RMS fitting, measuring distances, B-factors, radii of gyration, radial distribution functions, and time correlations, among other actions and analyses. Both the PTRAJ and CPPTRAJ programs and source code are freely available under the GNU General Public License version 3 and are currently distributed within the AmberTools 12 suite of support programs that make up part of the Amber package of computer programs (see http://ambe...

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A Comparative Insight into Amprenavir Resistance of Mutations V32I, G48V, I50V, I54V, and I84V in HIV-1 Protease Based on Thermodynamic Integration and MM-PBSA Methods

TL;DR: The present study could provide important guidance for the design of new potent inhibitors that could alleviate drug resistance of PR due to mutations by revealing that these mutations can adjust the shape and conformation of the binding pocket which provides main contributions to the decrease in the van der Waals interactions of APV with mutated PRs.
Journal ArticleDOI

Small-Molecule Covalent Modification of Conserved Cysteine Leads to Allosteric Inhibition of the TEAD⋅Yap Protein-Protein Interaction

TL;DR: Small-molecule TEAD⋅Yap inhibitors that rapidly and selectively form a covalent bond with a conserved cysteine located within the unique deep hydrophobic palmitate-binding pocket of TEADs are reported.
Journal ArticleDOI

Marine natural compounds as potents inhibitors against the main protease of SARS-CoV-2-a molecular dynamic study.

TL;DR: Marine natural compounds may be used as a potential inhibitor against SARS-CoV-2 for better management of COVID-19, a single-stranded RNA virus responsible for severe acute respiratory disease.
Journal ArticleDOI

Effect of mutations on binding of ligands to guanine riboswitch probed by free energy perturbation and molecular dynamics simulations.

TL;DR: Dynamics analyses based on MD trajectories indicate that mutations not only regulate the structural flexibility but also change the internal motion modes of GR, which implies that the aptamer domain activity of GR is extremely plastic and thus readily tunable by nucleotide mutations.
References
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Journal ArticleDOI

VMD: Visual molecular dynamics

TL;DR: VMD is a molecular graphics program designed for the display and analysis of molecular assemblies, in particular biopolymers such as proteins and nucleic acids, which can simultaneously display any number of structures using a wide variety of rendering styles and coloring methods.
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Dictionary of protein secondary structure: pattern recognition of hydrogen-bonded and geometrical features

TL;DR: A set of simple and physically motivated criteria for secondary structure, programmed as a pattern‐recognition process of hydrogen‐bonded and geometrical features extracted from x‐ray coordinates is developed.
Journal ArticleDOI

The Amber biomolecular simulation programs

TL;DR: The development, current features, and some directions for future development of the Amber package of computer programs, which contains a group of programs embodying a number of powerful tools of modern computational chemistry, focused on molecular dynamics and free energy calculations of proteins, nucleic acids, and carbohydrates.
Journal ArticleDOI

General definition of ring puckering coordinates

TL;DR: In this article, a unique mean plane is defined for a general monocyclic puckered ring, which is described by amplitude and phase coordinates which are generalizations of those introduced for cyclopentane by Kilpatrick, Pitzer, and Spitzer.
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