3
|
Soares CS, da Silva CO. Conformational study of methylphosphocholine: a prototype for phospholipid headgroups in membranes. J Mol Graph Model 2010; 29:82-92. [PMID: 20627784 DOI: 10.1016/j.jmgm.2010.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2010] [Revised: 05/04/2010] [Accepted: 05/05/2010] [Indexed: 10/19/2022]
Abstract
Phospholipid bilayers constitute the largest structural component of cell membranes, in which choline phospholipids are abundant. In this study, through a theoretical sampling on a methylphosphocholine (MePC) potential energy surface, a set of conformers was selected as a prototype for the membrane phospholipid head. We performed a detailed conformational study of such a prototype, both as an isolated moiety and in a solvated system. We used the polarizable continuum model (PCM) to account for solvation effects. We used a quantum-mechanical methodology based on density functional theory (DFT) and the 6-31G(d,p) basis set for the calculations. Through this methodology we were able to obtain a set of conformations that presented a mirror-image pattern, in good agreement with the experimental geometric values for the different phosphocholine derivatives. Potential curves for the main parameters of the dihedral space of MePC were obtained and are provided to guide future force-field parameterizations.
Collapse
Affiliation(s)
- Cinthia S Soares
- Departamento de Química, Universidade Federal Rural do Rio de Janeiro, BR 465, Seropédica, Rio de Janeiro, Brazil
| | | |
Collapse
|
5
|
Krishnamurty S, Stefanov M, Mineva T, Bégu S, Devoisselle JM, Goursot A, Zhu R, Salahub DR. Density Functional Theory-Based Conformational Analysis of a Phospholipid Molecule (Dimyristoyl Phosphatidylcholine). J Phys Chem B 2008; 112:13433-42. [DOI: 10.1021/jp804934d] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S. Krishnamurty
- UMR 5253 CNRS/ENSCM/UM2/UM1, Institut Charles Gerhardt Montpellier, 8 rue de 1ʼ Ecole Normale, 34296 Montpellier Cédex 5, France, Institute of Catalysis, Bulgarian Academy of Sciences, Georgi Bonchev Strasse 11, 1113 Sofia, Bulgaria, and Department of Chemistry and Institute for Biocomplexity and Informatics, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - M. Stefanov
- UMR 5253 CNRS/ENSCM/UM2/UM1, Institut Charles Gerhardt Montpellier, 8 rue de 1ʼ Ecole Normale, 34296 Montpellier Cédex 5, France, Institute of Catalysis, Bulgarian Academy of Sciences, Georgi Bonchev Strasse 11, 1113 Sofia, Bulgaria, and Department of Chemistry and Institute for Biocomplexity and Informatics, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - T. Mineva
- UMR 5253 CNRS/ENSCM/UM2/UM1, Institut Charles Gerhardt Montpellier, 8 rue de 1ʼ Ecole Normale, 34296 Montpellier Cédex 5, France, Institute of Catalysis, Bulgarian Academy of Sciences, Georgi Bonchev Strasse 11, 1113 Sofia, Bulgaria, and Department of Chemistry and Institute for Biocomplexity and Informatics, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - S. Bégu
- UMR 5253 CNRS/ENSCM/UM2/UM1, Institut Charles Gerhardt Montpellier, 8 rue de 1ʼ Ecole Normale, 34296 Montpellier Cédex 5, France, Institute of Catalysis, Bulgarian Academy of Sciences, Georgi Bonchev Strasse 11, 1113 Sofia, Bulgaria, and Department of Chemistry and Institute for Biocomplexity and Informatics, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - J. M. Devoisselle
- UMR 5253 CNRS/ENSCM/UM2/UM1, Institut Charles Gerhardt Montpellier, 8 rue de 1ʼ Ecole Normale, 34296 Montpellier Cédex 5, France, Institute of Catalysis, Bulgarian Academy of Sciences, Georgi Bonchev Strasse 11, 1113 Sofia, Bulgaria, and Department of Chemistry and Institute for Biocomplexity and Informatics, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - A. Goursot
- UMR 5253 CNRS/ENSCM/UM2/UM1, Institut Charles Gerhardt Montpellier, 8 rue de 1ʼ Ecole Normale, 34296 Montpellier Cédex 5, France, Institute of Catalysis, Bulgarian Academy of Sciences, Georgi Bonchev Strasse 11, 1113 Sofia, Bulgaria, and Department of Chemistry and Institute for Biocomplexity and Informatics, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - R. Zhu
- UMR 5253 CNRS/ENSCM/UM2/UM1, Institut Charles Gerhardt Montpellier, 8 rue de 1ʼ Ecole Normale, 34296 Montpellier Cédex 5, France, Institute of Catalysis, Bulgarian Academy of Sciences, Georgi Bonchev Strasse 11, 1113 Sofia, Bulgaria, and Department of Chemistry and Institute for Biocomplexity and Informatics, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - D. R. Salahub
- UMR 5253 CNRS/ENSCM/UM2/UM1, Institut Charles Gerhardt Montpellier, 8 rue de 1ʼ Ecole Normale, 34296 Montpellier Cédex 5, France, Institute of Catalysis, Bulgarian Academy of Sciences, Georgi Bonchev Strasse 11, 1113 Sofia, Bulgaria, and Department of Chemistry and Institute for Biocomplexity and Informatics, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| |
Collapse
|