Nanoscale fabrication of a peptide layer using an AFM probe

Chikashi Nakamura; Chie Miyamoto; Ikuo Obataya; Noriyuki Nakamura; Jun Miyake

doi:10.1117/12.578115

29 December 2004 Nanoscale fabrication of a peptide layer using an AFM probe

Chikashi Nakamura, Chie Miyamoto, Ikuo Obataya, Noriyuki Nakamura, Jun Miyake

Proceedings Volume 5593, Nanosensing: Materials and Devices; (2004) https://doi.org/10.1117/12.578115
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States

Abstract

Scanning probe microscopy has been applied in many studies to manipulate atoms or molecules. In particular, force spectroscopy using an atomic force microscope (AFM) is a powerful tool to elucidate intermolecular or intramolecular interactions and provide mechanical information. If enzymes could retain their activity when immobilized on probes, not only could enzyme-substrate interactions be investigated but also the probes could be used for precise biomolecular manipulation at the nano-scale. In our study, a method based on "Enzymatic Nanolithography" was successfully performed in a buffered solution using Staphylococcal serine V8 protease and AFM. To estimate the fabricating activity of the protease immobilized on the AFM tip to peptides immobilized on a substrate, we designed and synthesized peptides that showed enzymatic action specific to the protease. When the protease digested the reporter peptide a quencher residue was released from the main flame of the peptide and resulted in fluorescence. In the designed 9 mer peptides, TAMRA functioned as a good quencher for FAM. After contact of the protease-immobilized tip to the reporter peptide layer, a fluorescent area was observed by microscopic imaging.

Citation Download Citation

Chikashi Nakamura, Chie Miyamoto, Ikuo Obataya, Noriyuki Nakamura, and Jun Miyake "Nanoscale fabrication of a peptide layer using an AFM probe", Proc. SPIE 5593, Nanosensing: Materials and Devices, (29 December 2004); https://doi.org/10.1117/12.578115

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