Characterization of M13 bacteriophage and RGD peptide
The morphology of M13 phage was first confirmed by TEM imaging. As shown in Figure S3 (Supporting Information), TEM micrographs represent the direct observation of native M13 bacteriophage nanofilaments by diameter of 6.6 nm. Subsequently, the synthesized RGD peptide was verified by LC-MS analysis by determining the exact mass of peptide. Figure S4 (Supporting Information) shows the structure along with mass spectrum of the RGD peptide. The calculated exact mass (m/z) for peptide was 604.28, while the measured exact mass was 605.