Figure 4.
SDS-PAGE (Left) and MS (Right) of released peptides. Lane 1, fusion proteins GST–(–RGD–)4 (Up) and GST–(–RGD–)8 (Down); lane 2, peptides (–RGD–)4 (Up) and (–RGD–)8 (Down); lane 3, GST tag; and lane M, protein molecular weight standards.
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