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Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures
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Published on: July 2, 2012

Carbon-nanotube-based materials for protein crystallization.

Piyapong Asanithi1, Emmanuel Saridakis, Lata Govada

  • 1Department of Physics and Chemical and Process Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU27XH, United Kingdom.

ACS Applied Materials & Interfaces
|April 2, 2010
PubMed
Summary

Carbon-nanotube films facilitate protein crystallization, overcoming a key challenge in structural biology. Gelatin-based films show particular promise for crystallizing difficult proteins.

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Area of Science:

  • Structural Biology
  • Biophysics
  • Materials Science

Background:

  • Protein crystallization is crucial for determining biological molecule structure and function.
  • Current crystallization techniques present a significant bottleneck in research.
  • Novel methods are needed to improve protein crystallization efficiency.

Purpose of the Study:

  • To investigate the efficacy of carbon-nanotube-based films for protein crystallization.
  • To compare the performance of Triton X-100 (TX-100) and gelatin nanotube films.
  • To assess the potential of these films for crystallizing medically relevant proteins.

Main Methods:

  • Utilized carbon-nanotube films (TX-100 and gelatin) as nucleation surfaces for protein crystallization.
  • Studied the crystallization of two model proteins and two medically relevant proteins.
  • Collected quantitative data on crystallization times for the model protein lysozyme.

Main Results:

  • Both nanotube films induced protein nucleation at lower supersaturations than standard methods.
  • Gelatin-based films demonstrated superior nucleation induction for model proteins.
  • High-resolution (1.6 A) diffraction data were obtained for a medically relevant protein using TX-100 films.

Conclusions:

  • Carbon-nanotube-based films are effective for inducing protein crystallization.
  • Gelatin and TX-100 nanotube films show significant promise for crystallizing challenging proteins.
  • This approach offers a substantial improvement over conventional protein crystallization techniques.