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Cited by 310

The DOI matches its Crossref record; 18 of the 18 references it cites were found in a registry or an index.

Random walk in orthogonal space to achieve efficient free-energy simulation of complex systems

Open access
Zheng, Lianqing, Chen, Mengen, Yang, Wei·2008·Proceedings of the National Academy of Sciences

Abstract

In the past few decades, many ingenious efforts have been made in the development of free-energy simulation methods. Because complex systems often undergo nontrivial structural transition during state switching, achieving efficient free-energy calculation can be challenging. As identified earlier, the “Hamiltonian” lagging, which reveals the fact that necessary structural relaxation falls behind the order parameter move, has been a primary problem for generally low free-energy simulation efficiency. Here, we propose an algorithm by achieving a random walk in both the order parameter space and its generalized force space; thereby, the order parameter move and the required conformational relaxation can be efficiently synchronized. As demonstrated in both the alchemical transition and the conformational transition, a leapfrog improvement in free-energy simulation efficiency can be obtained; for instance, ( i ) it allows us to solve a notoriously challenging problem: accurately predicting the pK a value of a buried titratable residue, Asp-66, in the interior of the V66E staphylococcal nuclease mutant, and ( ii ) it allows us to gain superior efficiency over the metadynamics algorithm.

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Metadata

Authors
Zheng, L., Chen, M., & Yang, W.
Venue
Proceedings of the National Academy of Sciences
Published
2008-12-23
Volume
105
Issue
51
Pages
20227-20232
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1984604072
Cited by
310
References
18
FWCI
6.58
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Random walk in orthogonal space to achieve efficient free-energy simulation of complex systems. https://app.cochat.ai/papers/10.1073/pnas.0810631106
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Zheng, L., Chen, M., & Yang, W. (2008). Random walk in orthogonal space to achieve efficient free-energy simulation of complex systems. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0810631106

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