Serveur d'exploration cluster fer-soufre

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Development of parameters compatible with the CHARMM36 force field for [Fe4S4]2+ clusters and molecular dynamics simulations of adenosine-5'-phosphosulfate reductase in GROMACS 2019.

Identifieur interne : 000145 ( Main/Exploration ); précédent : 000144; suivant : 000146

Development of parameters compatible with the CHARMM36 force field for [Fe4S4]2+ clusters and molecular dynamics simulations of adenosine-5'-phosphosulfate reductase in GROMACS 2019.

Auteurs : Talis Uelisson Da Silva [Brésil] ; Karina De Carvalho Pougy [Brésil] ; Magaly Girão Albuquerque [Brésil] ; Camilo Henrique Da Silva Lima [Brésil] ; Sérgio De Paula Machado [Brésil]

Source :

RBID : pubmed:33183173

Abstract

DFT calculations were used to obtain parameters compatible with the CHARMM36 force field for iron-sulfur clusters (Fe-S) of the type [Fe4S4]2+ that are coordinated to dissimilatory adenosine-5'-phosphosulfate reductase (APSrAB). Classical molecular dynamics (MD) simulations were performed on two APSrAB systems to validate the parameters and verify the stability of the studied systems. The time analysis of the parameters inserted into the force field was in reasonable agreement with the experimental X-ray diffraction data. The analysis of the time evolution of the studied systems indicated that these systems and, in particular, the clusters in their respective cavities had a good stability and were in agreement with what was observed in previous works. The parameters obtained provide the basis for the study of APSrAB as well as other systems that contain [Fe4S4]2+ through the CHARMM36 force field.

DOI: 10.1080/07391102.2020.1847687
PubMed: 33183173


Affiliations:


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Le document en format XML

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clusters and molecular dynamics simulations of adenosine-5'-phosphosulfate reductase in GROMACS 2019.</title>
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<sub>4</sub>
S
<sub>4</sub>
]
<sup>2+</sup>
clusters and molecular dynamics simulations of adenosine-5'-phosphosulfate reductase in GROMACS 2019.</title>
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<div type="abstract" xml:lang="en">DFT calculations were used to obtain parameters compatible with the CHARMM36 force field for iron-sulfur clusters (Fe-S) of the type [Fe
<sub>4</sub>
S
<sub>4</sub>
]
<sup>2+</sup>
that are coordinated to dissimilatory adenosine-5'-phosphosulfate reductase (APSrAB). Classical molecular dynamics (MD) simulations were performed on two APSrAB systems to validate the parameters and verify the stability of the studied systems. The time analysis of the parameters inserted into the force field was in reasonable agreement with the experimental X-ray diffraction data. The analysis of the time evolution of the studied systems indicated that these systems and, in particular, the clusters in their respective cavities had a good stability and were in agreement with what was observed in previous works. The parameters obtained provide the basis for the study of APSrAB as well as other systems that contain [Fe
<sub>4</sub>
S
<sub>4</sub>
]
<sup>2+</sup>
through the CHARMM36 force field.</div>
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<sub>4</sub>
S
<sub>4</sub>
]
<sup>2+</sup>
clusters and molecular dynamics simulations of adenosine-5'-phosphosulfate reductase in GROMACS 2019.</ArticleTitle>
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<sub>4</sub>
S
<sub>4</sub>
]
<sup>2+</sup>
that are coordinated to dissimilatory adenosine-5'-phosphosulfate reductase (APSrAB). Classical molecular dynamics (MD) simulations were performed on two APSrAB systems to validate the parameters and verify the stability of the studied systems. The time analysis of the parameters inserted into the force field was in reasonable agreement with the experimental X-ray diffraction data. The analysis of the time evolution of the studied systems indicated that these systems and, in particular, the clusters in their respective cavities had a good stability and were in agreement with what was observed in previous works. The parameters obtained provide the basis for the study of APSrAB as well as other systems that contain [Fe
<sub>4</sub>
S
<sub>4</sub>
]
<sup>2+</sup>
through the CHARMM36 force field.</AbstractText>
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<name sortKey="Albuquerque, Magaly Girao" sort="Albuquerque, Magaly Girao" uniqKey="Albuquerque M" first="Magaly Girão" last="Albuquerque">Magaly Girão Albuquerque</name>
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