Volume 38, Issue 27 pp. 2354-2363
Software News and Updates

CHARMM-GUI Martini Maker for modeling and simulation of complex bacterial membranes with lipopolysaccharides

Pin-Chia Hsu

Pin-Chia Hsu

School of Chemistry, University of Southampton, Southampton, SO17 1BJ United Kingdom

These authors contributed equally to this work

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Bart M. H. Bruininks

Bart M. H. Bruininks

Groningen Biomolecular Sciences and Biotechnology Institute and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 7, Groningen, AG, 9747 The Netherlands

These authors contributed equally to this work

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Damien Jefferies

Damien Jefferies

School of Chemistry, University of Southampton, Southampton, SO17 1BJ United Kingdom

These authors contributed equally to this work

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Paulo Cesar Telles de Souza

Paulo Cesar Telles de Souza

Groningen Biomolecular Sciences and Biotechnology Institute and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 7, Groningen, AG, 9747 The Netherlands

These authors contributed equally to this work

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Jumin Lee

Jumin Lee

Departments of Biological Sciences and Bioengineering, Lehigh University, Pennsylvania

These authors contributed equally to this work

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Dhilon S. Patel

Dhilon S. Patel

Departments of Biological Sciences and Bioengineering, Lehigh University, Pennsylvania

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Siewert J. Marrink

Siewert J. Marrink

Groningen Biomolecular Sciences and Biotechnology Institute and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 7, Groningen, AG, 9747 The Netherlands

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Yifei Qi

Corresponding Author

Yifei Qi

College of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062 China

E-mail: [email protected], E-mail: [email protected], E-mail: [email protected]Search for more papers by this author
Syma Khalid

Corresponding Author

Syma Khalid

School of Chemistry, University of Southampton, Southampton, SO17 1BJ United Kingdom

E-mail: [email protected], E-mail: [email protected], E-mail: [email protected]Search for more papers by this author
Wonpil Im

Corresponding Author

Wonpil Im

Departments of Biological Sciences and Bioengineering, Lehigh University, Pennsylvania

E-mail: [email protected], E-mail: [email protected], E-mail: [email protected]Search for more papers by this author
First published: 03 August 2017
Citations: 154

Abstract

A complex cell envelope, composed of a mixture of lipid types including lipopolysaccharides, protects bacteria from the external environment. Clearly, the proteins embedded within the various components of the cell envelope have an intricate relationship with their local environment. Therefore, to obtain meaningful results, molecular simulations need to mimic as far as possible this chemically heterogeneous system. However, setting up such systems for computational studies is far from trivial, and consequently the vast majority of simulations of outer membrane proteins still rely on oversimplified phospholipid membrane models. This work presents an update of CHARMM-GUI Martini Maker for coarse-grained modeling and simulation of complex bacterial membranes with lipopolysaccharides. The qualities of the outer membrane systems generated by Martini Maker are validated by simulating them in bilayer, vesicle, nanodisc, and micelle environments (with and without outer membrane proteins) using the Martini force field. We expect this new feature in Martini Maker to be a useful tool for modeling large, complicated bacterial outer membrane systems in a user-friendly manner. © 2017 Wiley Periodicals, Inc.

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