Structure of the bacterial cell envelope and interactions with antimicrobials: insights from molecular dynamics simulations

P Sharma, R Vaiwala, AK Gopinath, R Chockalingam… - Langmuir, 2024 - ACS Publications
Bacteria have evolved over 3 billion years, sha** our intrinsic and symbiotic coexistence
with these single-celled organisms. With rising populations of drug-resistant strains, the …

Atomistic simulation of molecules interacting with biological nanopores: from current understanding to future directions

A Acharya, JD Prajapati… - The Journal of Physical …, 2022 - ACS Publications
Biological nanopores have been at the focus of numerous studies due to their role in many
biological processes as well as their (prospective) technological applications. Among many …

Conformational dynamics of loop L3 in OmpF: implications toward antibiotic translocation and voltage gating

A Acharya, I Ghai, C Piselli, JD Prajapati… - Journal of Chemical …, 2022 - ACS Publications
In the present work, we delineate the molecular mechanism of a bulky antibiotic permeating
through a bacterial channel and uncover the role of conformational dynamics of the …

Converging PMF Calculations of Antibiotic Permeation across an Outer Membrane Porin with Subkilocalorie per Mole Accuracy

J Lapierre, JS Hub - Journal of Chemical Information and …, 2023 - ACS Publications
The emergence of multidrug-resistant pathogens led to a critical need for new antibiotics. A
key property of effective antibiotics against Gram-negative bacteria is their ability to …

Antibiotic charge profile determines the extent of L3 dynamics in OmpF: an expedited passage for molecules with a positive charge

A Acharya, K Jana… - The Journal of Physical …, 2023 - ACS Publications
Efficient permeation into Gram-negative bacterial cells is a much-desired property in the
design of antibacterial agents. The goal is to arrive at one or more chemical modifications of …

Boosting the conformational sampling by combining replica exchange with solute tempering and well‐sliced metadynamics

AB Kapakayala, NN Nair - Journal of Computational Chemistry, 2021 - Wiley Online Library
Methods that combine collective variable (CV) based enhanced sampling and global
tempering approaches are used in speeding‐up the conformational sampling and free …

Seeing is believing: Illuminating the Gram-negative outer membrane with molecular dynamics simulations

G Gutishvili, L Yang, JC Gumbart - Current Opinion in Structural Biology, 2024 - Elsevier
Recent advances in molecular dynamics (MD) simulations have led to rapid improvement in
our understanding of the molecular details of the outer membranes (OMs) of Gram-negative …

Proton-exchange reaction in acidic zeolites: Mechanism and free energetics

R Verma, NN Nair - The Journal of Physical Chemistry C, 2022 - ACS Publications
Conversion of alkanes to liquid fuels and other chemicals has a great demand in many
industrial applications. The key challenge in the alkane conversion is the activation of the C …

Temperature Accelerated Sliced Sampling to Probe Ligand Dissociation from Protein

S Tripathi, NN Nair - Journal of Chemical Information and …, 2023 - ACS Publications
Modeling ligand unbinding in proteins to estimate the free energy of binding and probing the
mechanism presents several challenges. They primarily pertain to the entropic bottlenecks …

Molecular Mechanism of Ciprofloxacin Translocation Through the Major Diffusion Channels of the ESKAPE Pathogens Klebsiella pneumoniae and Enterobacter …

A Acharya, PK Behera… - The Journal of Physical …, 2024 - ACS Publications
Experimental studies on the translocation and accumulation of antibiotics in Gram-negative
bacteria have revealed details of the properties that allow efficient permeation through …