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. Author manuscript; available in PMC: 2013 Dec 21.
Published in final edited form as: ACS Nano. 2012 Nov 15;6(12):10776–10785. doi: 10.1021/nn304101x

Figure 2.

Figure 2

Chemical structures of PAs used in this study with highlighted regions of significance. PA 1 is the base sequence. PA 2 contains a photolabile linker (red oval) and the RGDS cell-adhesion sequence; PA 3 contains a control, non-photolabile linker (orange oval) and the RGDS sequence, while PA 4 contains the same non-photolabile linker and a mutated RGES sequence (blue oval). Inset: Chemical structures of photocleavable Fmoc-amino acid I and non-photocleavable control Fmoc-amino acid II (synthetic details available in Supporting Information).