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Most of the ongoing projects aimed at the development of specific therapies and vaccines against COVID-19 use the SARS-CoV-2 spike (S) protein as the main target [1-3]. The binding of the spike protein with the ACE2 receptor (ACE2) of the…

生物物理 · 物理学 2021-11-17 Claudia R. Arbeitman , Pablo Rojas , Pedro Ojeda-May , Martin E. Garcia

The functionality of protein-protein complexes is closely tied to the strength of their interactions, making the evaluation of binding affinity a central focus in structural biology. However, the molecular determinants underlying binding…

The SARS-CoV-2 pandemic has added new urgency to the study of viral mechanisms of infection. But while vaccines offer a measure of protection against this specific outbreak, a new era of pandemics has been predicted. In addition to this,…

生物物理 · 物理学 2022-10-25 Betony Adams , Ilya Sinayskiy , Rienk van Grondelle , Francesco Petruccione

We present an analytic and numerical study of noise-assisted quantum exciton (electron) transfer (ET) in a bio-complex, consisting of an electron donor and acceptor (a dimer), modeled by interacting continuous electron bands of finite…

生物物理 · 物理学 2020-02-11 Alexander I. Nesterov , Gennady P. Berman , Marco Merkli , Avadh Saxena

The time-development of photoexcitations in molecular aggregates exhibits specific dynamics of electronic states and vibrational wavefunction. We discuss the dynamical formation of entanglement between electronic and vibrational degrees of…

量子物理 · 物理学 2007-05-23 Dmitri S. Kilin , Jeffrey A. Cina , Oleg V. Prezhdo

Emulation of energy transfer processes in natural systems on quantum platforms can further our understanding of complex dynamics in nature. One notable example is the demonstration of vibrationally assisted energy transfer (VAET) on a…

量子物理 · 物理学 2024-05-14 Zeng-Zhao Li , K. Birgitta Whaley

We investigate connectivity properties of the SARS-CoV2 spike protein-human ACE2-receptor complex employing a protein side chain-based network method that allows us to span a range from atomic to global protein scales. We analyze network…

A theory on the conformation transition for SARS-CoV-2 spike protein (S) is proposed. The conformation equilibrium between open (up) and closed (down) conformations of receptor binding domain (RBD) of the spike is studied from the…

生物大分子 · 定量生物学 2021-02-01 Liaofu Luo , Yongchun Zuo

Quantum simulation offers a route to study open-system molecular dynamics in non-perturbative regimes by programming the interactions among electronic, vibrational, and environmental degrees of freedom on similar energy scales. Trapped-ion…

COVID-19, since emerged in Wuhan, China, has been a major concern due to its high infection rate, leaving more than one million infected people around the world. Huge number of studies tried to reveal the structure of the SARS-CoV-2…

生物物理 · 物理学 2020-04-07 Muhamed Amin , Mariam K. Sorour , Amal Kasry

We investigate theoretically the stochastic dynamics of Resonance Electronic Energy Transfer (RET), in a bi-dimensional overexcited ensemble of donor and acceptor molecules. We find that, after initial optical excitation of all the donors,…

介观与纳米尺度物理 · 物理学 2023-11-27 R. Avriller , A. Marché , G. Jonusauskas

Spike (S) glycoproteins mediate the coronavirus entry into the host cell. The S1 subunit of S-proteins contains the receptor-binding domain (RBD) that is able to recognize different host receptors, highlighting its remarkable capacity to…

生物大分子 · 定量生物学 2020-12-23 Patrícia P. D. Carvalho , Nelson A. Alves

Simulating large electronic networks with vibrational environments remains a fundamental challenge due to the long lifetimes of electronic-vibrational (vibronic) excitations on the picosecond scale. Quantum computers are a promising…

We study theoretically the noise-assisted quantum exciton (electron) transfer (ET) in bio-complexes consisting of a single-level electron donor and an acceptor which has a complicated internal structure, and is modeled by many electron…

生物物理 · 物理学 2017-09-12 Shmuel Gurvitz , Alexander I. Nesterov , Gennady P. Berman

In the context of biology, unlike the comprehensively established Standard Model in physics, many biological processes lack a complete theoretical framework and are often described phenomenologically. A pertinent example is olfaction -- the…

生物大分子 · 定量生物学 2025-02-26 Muhammad Waqas Haseeb , Mohamad Toutounji

Bridge-mediated electron transfer (ET) between a donor and an acceptor is prototypical for the description of numerous most important ET scenarios. While multi-step ET and the interplay of sequential and direct superexchange transfer…

化学物理 · 物理学 2021-08-26 Nirmalendu Acharyya , Roman Ovcharenko , Benjamin P. Fingerhut

We investigate exciton transport through one-dimensional molecular aggregates interacting strongly with a cavity mode. Unlike several prior theoretical studies treating the monomers as simple two-level systems, exciton-vibration coupling is…

介观与纳米尺度物理 · 物理学 2019-03-14 Jingyu Liu , Qing Zhao , Ning Wu

We simulate the long-range inter-complex electronic energy transfer in Photosystem II -- from the antenna complex, via a core complex, to the reaction center -- using a non-Markovian (ZOFE) quantum master equation description that allows us…

化学物理 · 物理学 2016-07-27 Jan J. J. Roden , Doran I. G. Bennett , K. Birgitta Whaley

The devastating impact of the COVID-19 pandemic caused by SARS coronavirus 2 (SARS CoV 2) has raised important questions about viral origin, mechanisms of zoonotic transfer to humans, whether companion or commercial animals can act as…

生物大分子 · 定量生物学 2021-07-12 Sakshi Piplani , Puneet Kumar Singh , David A. Winkler , Nikolai Petrovsky

Presently, India bears amongst the highest burden of non-communicable diseases such as diabetes mellitus (DM), hypertension (HT), and cardio vascular disease (CVD) and thus represents a vulnerable target to the SARS-CoV-2/COVID-19 pandemic.…

生物大分子 · 定量生物学 2020-04-15 Dhanashree Jagtap , Selvaa Kumar C , Smita Mahale , Vainav Patel
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