Controllable Assembly of Flexible Protein Nanotubes for Loading Multifunctional Modules

2018 ◽  
Vol 10 (30) ◽  
pp. 25135-25145 ◽  
Author(s):  
Guibo Rao ◽  
Yan Fu ◽  
Na Li ◽  
Jiayi Yin ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Flexible Protein ◽  
Protein Nanotubes

Modelling Flexible Protein-Ligand Binding in p38α MAP Kinase using the QUBE Force Field

2019 ◽  
Author(s):  
Joshua Horton ◽  
Alice Allen ◽  
Daniel Cole
Keyword(s):  
Quantum Mechanics ◽  
Force Field ◽  
Map Kinase ◽  
Binding Free Energy ◽  
Quantum Mechanical ◽  
Enhanced Sampling ◽  
Relative Binding ◽  
Stringent Test ◽  
Flexible Protein ◽  
P38α Map Kinase

<div><div><div><p>The quantum mechanical bespoke (QUBE) force field is used to retrospectively calculate the relative binding free energy of a series of 17 flexible inhibitors of p38α MAP kinase. The size and flexibility of the chosen molecules represent a stringent test of the derivation of force field parameters from quantum mechanics, and enhanced sampling is required to reduce the dependence of the results on the starting structure. Competitive accuracy with a widely-used biological force field is achieved, indicating that quantum mechanics derived force fields are approaching the accuracy required to provide guidance in prospective drug discovery campaigns.</p></div></div></div>

Flexible protein alignment and hinge detection

2002 ◽  
Vol 48 (2) ◽  
pp. 242-256 ◽  
Author(s):  
Maxim Shatsky ◽  
Ruth Nussinov ◽  
Haim J. Wolfson
Keyword(s):  
Protein Alignment ◽  
Flexible Protein

scholarly journals All-Atom MD Simulations of the HBV Capsid Complexed with AT130 Reveal Secondary and Tertiary Structural Changes and Mechanisms of Allostery

2021 ◽  
Author(s):  
Carolina Pérez Segura ◽  
Boon Chong Goh ◽  
Jodi A. Hadden-Perilla
Keyword(s):  
Small Molecules ◽  
Drug Target ◽  
Structural Changes ◽  
Salt Bridge ◽  
Md Simulations ◽  
Health Concern ◽  
Protein Dimer ◽  
B Virus ◽  
Flexible Protein ◽  
Dynamics Simulations

AbstractThe hepatitis B virus (HBV) capsid is an attractive drug target, relevant to combating viral hepatitis as a major public health concern. Among small molecules known to interfere with capsid assembly, the phenylpropenamides, including AT130, represent an important anti-viral paradigm based on disrupting the timing of genome encapsulation. Crystallographic studies of AT130-bound complexes have been essential in explaining the effects of the small molecule on HBV capsid structure; however, computational examination reveals that key changes attributed to AT130 were erroneous, likely a consequence of interpreting poor resolution arising from a highly flexible protein. Here, all-atom molecular dynamics simulations of an intact AT130-bound HBV capsid reveal that, rather than damaging spike helicity, AT130 enhances the capsid’s ability to recover it. A new conformational state is identified, which can lead to dramatic opening of the intradimer interface and disruption of communication within the spike tip. A novel salt bridge is also discovered, which can mediate contact between the spike tip and fulcrum even in closed conformations, revealing a mechanism of direct communication across these domains. Combined with dynamical network analysis, results describe a connection between the intra- and interdimer interfaces and enable mapping of allostery traversing the entire capsid protein dimer.

Pyrrolidine Derivatives as Plasmepsin Inhibitors: Binding Mode Analysis Assisted by Molecular Dynamics Simulations of a Highly Flexible Protein

ChemMedChem ◽  
2010 ◽  
Vol 5 (3) ◽  
pp. 443-454 ◽  
Author(s):  
Torsten Luksch ◽  
Andreas Blum ◽  
Nina Klee ◽  
Wibke E. Diederich ◽  
Christoph A. Sotriffer ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Binding Mode ◽  
Mode Analysis ◽  
Flexible Protein ◽  
Dynamics Simulations

scholarly journals CABS-dock standalone: a toolbox for flexible protein–peptide docking

2019 ◽  
Vol 35 (20) ◽  
pp. 4170-4172 ◽  
Author(s):  
Mateusz Kurcinski ◽  
Maciej Pawel Ciemny ◽  
Tymoteusz Oleniecki ◽  
Aleksander Kuriata ◽  
Aleksandra E Badaczewska-Dawid ◽  
...  
Keyword(s):  
Docking Simulation ◽  
Computational Time ◽  
Backbone Flexibility ◽  
Non Profit ◽  
Peptide Docking ◽  
Protein Receptor ◽  
Analysis Of Results ◽  
Peptide System ◽  
Flexible Protein ◽  
Python Package

AbstractSummaryCABS-dock standalone is a multiplatform Python package for protein–peptide docking with backbone flexibility. The main feature of the CABS-dock method is its ability to simulate significant backbone flexibility of the entire protein–peptide system in a reasonable computational time. In the default mode, the package runs a simulation of fully flexible peptide searching for a binding site on the surface of a flexible protein receptor. The flexibility level of the molecules may be defined by the user. Furthermore, the CABS-dock standalone application provides users with full control over the docking simulation from the initial setup to the analysis of results. The standalone version is an upgrade of the original web server implementation—it introduces a number of customizable options, provides support for large-sized systems and offers a framework for deeper analysis of docking results.Availability and implementationCABS-dock standalone is distributed under the MIT licence, which is free for academic and non-profit users. It is implemented in Python and Fortran. The CABS-dock standalone source code, wiki with documentation and examples of use and installation instructions for Linux, macOS and Windows are available in the CABS-dock standalone repository at https://bitbucket.org/lcbio/cabsdock.

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