Native protein nanolithography that can write, read and erase.
Ali Tinazli1, Jacob Piehler, Mirjam Beuttler
1Institute of Biochemistry, Biocenter, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 9, D-60438 Frankfurt, Germany.
Nature Nanotechnology
|July 26, 2008
Summary
This study introduces native protein nanolithography, a novel technique for assembling fragile proteins and complexes. This method enables rapid, versatile creation of protein arrays for advanced biological interaction studies.
Area of Science:
- Biotechnology
- Nanotechnology
- Molecular Biology
Background:
- Systematic exploration of protein-protein interactions and dynamic networks is crucial in biological sciences.
- Nanopatterned protein arrays offer advantages like reduced diffusion times and minimal sample requirements for sensing.
- Atomic force microscopy (AFM) has enabled submicrometre protein patterning, but is limited to stable proteins.
Purpose of the Study:
- To develop a nanolithography technique capable of assembling fragile proteins and multiprotein complexes under native conditions.
- To enable versatile, high-resolution fabrication of functional protein arrays for biological analysis.
Main Methods:
- Introduction of native protein nanolithography using a novel vibrational AFM mode (contact oscillation mode).
- Detachment of immobilized proteins and selective self-assembly of new proteins from bulk solution.
- Fabrication of two-dimensionally arranged nano-objects with biological activity.
Main Results:
- Demonstrated nanostructured assembly of even fragile proteins and multiprotein complexes under native conditions.
- Achieved rapid writing, reading, and erasing of protein arrays.
- Successfully assembled functional protein complexes with uniform orientation at dimensions as small as 50 nm.
Conclusions:
- Native protein nanolithography provides a versatile platform for fabricating biologically active nano-objects.
- This technique facilitates proteome-wide interaction screens and single molecule/virus/cell analyses.
- The method allows for dynamic manipulation and assembly of protein arrays with high precision.
