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TitleAdsorption of homopolypeptides on gold investigated using atomistic molecular dynamics
Author(s)Vila Verde, A.
Beltramo, Peter J.
Maranas, Janna K.
KeywordsPeptide adsorption
Gold binding peptides
All-atom molecular dynamics simulations
Peptide flexibility
Peptide stability
Issue date2011
PublisherACS Publications
Abstract(s)We investigate the role of dynamics on adsorption of peptides to gold surfaces using all-atom molecular dynamics simulations in explicit solvent. We choose six homopolypeptides [Ala 10 , Ser 10 , Thr 10 , Arg 10 , Lys 10 , and Gln 10 ], for which experimental surface coverages are not correlated with amino acid level affinities for gold, with the idea that dynamic properties may also play a role. To assess dynamics we determine both conformational movement and flexibility of the peptide within a given conformation. Low conformational movement indicates stability of a given conformation and leads to less adsorption than homopolypeptides with faster conformational movement. Likewise, low flexibility within a given conformation also leads to less adsorption. Neither amino acid affinities nor dynamic considerations alone predict surface coverage; rather both quantities must be considered in peptide adsorption to gold surfaces.
AccessOpen access
Appears in Collections:CDF - FCT - Artigos/Papers (with refereeing)

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