Figure 7
From: Evaluating protocols and analytical methods for peptide adsorption experiments
Effects of aliphatic surface contamination on adsorption of peptides. N/Au ratios (top) and atomic % of Au (bottom) are compared for samples deposited on gold substrates immediately after cleaning (orange) and after a rinse in hexanes (blue). Both types of substrates were incubated in 1.0 mM (GGKGG and K5) or 0.5 mM (K10) peptide solutions in 10 mM sodium phosphate buffer (pH 7) at room temperature. N/Au ratios are normalized by the average number of nitrogen atoms per residue for each peptide. (*) Denotes significant difference (p < 0.05) between a pair of values.