Membrane protein resistance of oligo(ethylene oxide) self-assembled monolayers

Published

July 31, 2014

Author(s)

David J. Vanderah, Marlon L. Walker, David T. Gallagher, Ryan Vierling, Fay Crawshaw

Abstract

Spectroscopic ellipsometry was used to evaluate the resistance to protein adsorption (RPA) of self- assembled monolayers (SAMs) of HS(CH2)3O(CH2CH2O)6M and [HS(CH2)3CH]2O-(CH2CH2O)6M, where M = CH3 or H, on Au. The SAMs were exposed to fibrinogen, a soluble protein frequently used to evaluate surface protein resistance properties, and rhodopsin, an integral membrane protein (IMP). Our results show that the nature of the oligo(ethylene oxide) end group is critical for surfaces to resist adsorption of IMPs as the methoxy-terminated SAMs (M = CH3) were found to adsorb rhodopsin, whereas when M = H the SAMs exhibited high RPA.

Citation

Colloids and Surfaces B-Biointerfaces

Pub Type

Journals

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DOI Link

Keywords

"self-assembled monolayers, membrane proteins, protein resistance"

Citation

Vanderah, D. , Walker, M. , Gallagher, D. , Vierling, R. and Crawshaw, F. (2014), Membrane protein resistance of oligo(ethylene oxide) self-assembled monolayers, Colloids and Surfaces B-Biointerfaces, [online], https://doi.org/10.1016/j.colsurfb.2014.07.031 (Accessed October 10, 2025)