Using molecular dynamics simulations to identify the key factors responsible for chiral recognition by an amino acid-based molecular micelle
Using molecular dynamics simulations to identify the key factors responsible for chiral recognition by an amino acid-based molecular micelle
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使用分子动力学模拟来确定氨基酸分子胶束手性识别的关键因素
DOI:
10.1080/01932691.2018.1479267
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发表时间:
2018
影响因子:
2.2
通讯作者:
Fang, Yayin
中科院分区:
文献类型:
--
作者:
Morris, Kevin F.;Billiot, Eugene J.;Billiot, Fereshteh H.;Ingle, Jordan A.;Krause, Kevin B.;Lewis, Corbin R.;Lipkowitz, Kenny B.;Southerland, William M.;Fang, Yayin
Molecular dynamics (MD) simulations were used to investigate the binding of six chiral compounds to the amino acid-based molecular micelle (MM) poly-(sodium undecyl-(L)-leucine-leucine) or poly(SULL). The MM investigated is used as a chiral selector in capillary electrophoresis. The project goal was to characterize the chiral recognition mechanism in these separations and to move toward predictive models to identify the best amino acid-based MM for a given separation. Poly(SULL) was found to contain six binding sites into which chiral compounds could insert. Four sites had similar sizes, shapes, and electrostatic properties. Enantiomers of alprenolol, propranolol, 1,1′-bi-2-naphthyl-2,2′-diyl hydrogen phosphate, 1,1′-bi-2-naphthol, chlorthalidone, or lorazepam were separately docked into each binding pocket and MD simulations with the resulting intermolecular complexes were performed. Solvent-accessible surface area calculations showed the compounds preferentially associated with binding sites where they penetrated into the MM core and shielded their non-polar atoms from solvent. Furthermore, with five of the six compounds the enantiomer with the most favorable free energy of MM association also experienced the most favorable intermolecular hydrogen bonding interactions with the MM. This result suggests that stereoselective intermolecular hydrogen bonds play an important role in chiral discrimination in separations using amino acid-based MMs.GRAPHICAL ABSTRACT
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影响因子:
2.9
作者:
S. Shamsi;I. Warner
通讯作者:
I. Warner
DOI:
10.4236/ojpc.2012.24032
发表时间:
2012
期刊:
Open journal of physical chemistry
影响因子:
--
作者:
Morris,KevinF;Billiot,EugeneJ;Billiot,FereshtehH;Lipkowitz,KennyB;Southerland,WilliamM;Fang,Yayin
通讯作者:
Fang,Yayin
影响因子:
2
作者:
Stephanie Kingsbury;Curtis J. Ducommun;Bryan M. Zahakaylo;Elizabeth H. Dickinson;K. Morris
通讯作者:
K. Morris
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
C. Palmer
通讯作者:
C. Palmer
DOI:
10.4236/ojpc.2013.31004
发表时间:
2013
期刊:
Open journal of physical chemistry
影响因子:
--
作者:
Morris,KevinF;Billiot,EugeneJ;Billiot,FereshtehH;Lipkowitz,KennyB;Southerland,WilliamM;Fang,Yayin
通讯作者:
Fang,Yayin