FIG. 6.

OAK versus peptide stability. Beads coated with K-7α₁₂ or polylysine-K₁₅, exposed to consecutive cycles of bacterial binding and release with ethanol, were submitted to a cleavage reaction followed by LC-MS analysis. (a and b) Resulting HPLC chromatograms of the cleaved OAK before (a) and after (b) 10 cycles. Arrows indicate the OAK UV-absorbing peak. (c and d) Mass spectrometry analyses of the above peaks in panels a and b, respectively, for z = 3, 4, and 5. (e and f) Resulting HPLC chromatograms before (f) and after (e) 10 cycles of the cleaved K₁₅. The arrow indicates the K₁₅ UV-absorbing peak.