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- W2060781689 abstract "Despite the extensive utilization of biomolecule–titania interfaces, biomolecular recognition and interactions at the aqueous titania interface remain far from being fully understood. Here, atomistic molecular dynamics simulations, in partnership with metadynamics, are used to calculate the free energy of adsorption of different amino acid side chain analogues at the negatively-charged aqueous rutile TiO2 (110) interface, under conditions corresponding with neutral pH. Our calculations predict that charged amino acid analogues have a relatively high affinity to the titania surface, with the arginine analogue predicted to be the strongest binder. Interactions between uncharged amino acid analogues and titania are found to be repulsive or weak at best. All of the residues that bound to the negatively-charged interface show a relatively stronger adsorption compared with the charge-neutral interface, including the negatively-charged analogue. Of the analogues that are found to bind to the titania surface, the rank ordering of the binding affinities is predicted to be “arginine” > “lysine” ≈ aspartic acid > “serine”. This is the same ordering as was found previously for the charge-neutral aqueous titania interface. Our results show very good agreement with available experimental data and can provide a baseline for the interpretation of peptide–TiO2 adsorption data." @default.
- W2060781689 created "2016-06-24" @default.
- W2060781689 creator A5031399084 @default.
- W2060781689 creator A5036777956 @default.
- W2060781689 creator A5053769720 @default.
- W2060781689 date "2014-10-28" @default.
- W2060781689 modified "2023-10-10" @default.
- W2060781689 title "Binding Affinities of Amino Acid Analogues at the Charged Aqueous Titania Interface: Implications for Titania-Binding Peptides" @default.
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- W2060781689 doi "https://doi.org/10.1021/la503312d" @default.
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