» Articles » PMID: 18481889

United-atom Acyl Chains for CHARMM Phospholipids

Overview
Journal J Phys Chem B
Specialty Chemistry
Date 2008 May 17
PMID 18481889
Citations 32
Authors
Affiliations
Soon will be listed here.
Abstract

In all-atom simulations of lipid membranes, explicit hydrogen atoms contained in the hydrocarbon region are described by a large number of degrees of freedom, although they convey only limited physical information. We propose an implicit-hydrogen model for saturated and monounsaturated acyl chains, aimed at complementing the all-atom CHARMM27 model for phospholipid headgroups. Torsional potentials and nonbonded parameters were fitted to reproduce experimental data and free energy surfaces of all-atom model systems. Comparative simulations of fluid-phase POPC bilayers were performed using the all-hydrogen force field and the present model. The hybrid model accelerates a typical bilayer simulation by about 50% while sacrificing a minimal amount of detail with respect to the fully atomistic description. In addition, the united-atom description is energetically compatible with all-atom CHARMM models, making it suitable for simulations of complex membrane systems.

Citing Articles

CHARMM36 Lipid Force Field with Explicit Treatment of Long-Range Dispersion: Parametrization and Validation for Phosphatidylethanolamine, Phosphatidylglycerol, and Ether Lipids.

Yu Y, Kramer A, Venable R, Brooks B, Klauda J, Pastor R J Chem Theory Comput. 2021; 17(3):1581-1595.

PMID: 33620194 PMC: 8130185. DOI: 10.1021/acs.jctc.0c01327.


Phospholipid-Based Reverse Micelle Structures in Vegetable Oil Modified by Water Content, Free Fatty Acid, and Temperature.

Penttila P, Vierros S, Utriainen K, Carl N, Rautkari L, Sammalkorpi M Langmuir. 2019; 35(25):8373-8382.

PMID: 31141381 PMC: 6750831. DOI: 10.1021/acs.langmuir.9b01135.


Molecular mechanism of substrate selectivity of the arginine-agmatine Antiporter AdiC.

Krammer E, Gibbons A, Roos G, Prevost M Sci Rep. 2018; 8(1):15607.

PMID: 30353119 PMC: 6199258. DOI: 10.1038/s41598-018-33963-1.


Propofol inhibits the voltage-gated sodium channel NaChBac at multiple sites.

Wang Y, Yang E, Wells M, Bondarenko V, Woll K, Carnevale V J Gen Physiol. 2018; 150(9):1317-1331.

PMID: 30018039 PMC: 6122922. DOI: 10.1085/jgp.201811993.


Lipidated apolipoprotein E4 structure and its receptor binding mechanism determined by a combined cross-linking coupled to mass spectrometry and molecular dynamics approach.

Henry N, Krammer E, Stengel F, Adams Q, Van Liefferinge F, Hubin E PLoS Comput Biol. 2018; 14(6):e1006165.

PMID: 29933361 PMC: 6033463. DOI: 10.1371/journal.pcbi.1006165.


References
1.
Chiu S, Vasudevan S, Jakobsson E, Mashl R, Scott H . Structure of sphingomyelin bilayers: a simulation study. Biophys J. 2003; 85(6):3624-35. PMC: 1303667. DOI: 10.1016/S0006-3495(03)74780-8. View

2.
Chandrasekhar I, Kastenholz M, Lins R, Oostenbrink C, Schuler L, Tieleman D . A consistent potential energy parameter set for lipids: dipalmitoylphosphatidylcholine as a benchmark of the GROMOS96 45A3 force field. Eur Biophys J. 2003; 32(1):67-77. DOI: 10.1007/s00249-002-0269-4. View

3.
Duque D, Vega L . Some issues on the calculation of interfacial properties by molecular simulation. J Chem Phys. 2004; 121(17):8611-7. DOI: 10.1063/1.1802672. View

4.
Berger O, Edholm O, Jahnig F . Molecular dynamics simulations of a fluid bilayer of dipalmitoylphosphatidylcholine at full hydration, constant pressure, and constant temperature. Biophys J. 1997; 72(5):2002-13. PMC: 1184396. DOI: 10.1016/S0006-3495(97)78845-3. View

5.
Egberts E, Marrink S, Berendsen H . Molecular dynamics simulation of a phospholipid membrane. Eur Biophys J. 1994; 22(6):423-36. DOI: 10.1007/BF00180163. View