| Auteur(s) |
Kaouthar Dhouib1, Chantal Khan Malek ( )2, Wilhelm Pfleging3, Bernard Gauthier-Manuel2, Roland Duffait4, Gaël Thuillier2, Rosaria Ferrigno5, Lilian Jacquamet6, Jeremy Ohana6, Jean-Luc Ferrer6, Anne Théobald-Dietrich1, Richard Giegé1, Bernard Lorber1, Claude Sauter ( )1 |
| Laboratoire |
|
| Domaine |
|
| PMID (identifiant de la référence Pubmed) |
19417908 |
| Titre |
Microfluidic chips for the crystallization of biomacromolecules by counter-diffusion and on-chip crystal X-ray analysis. |
| Résumé |
Microfluidic devices were designed to perform on micromoles of biological macromolecules and viruses the search and the optimization of crystallization conditions by counter-diffusion, as well as the on-chip analysis of crystals by X-ray diffraction. Chips composed of microchannels were fabricated in poly-dimethylsiloxane (PDMS), poly-methyl-methacrylate (PMMA) and cyclo-olefin-copolymer (COC) by three distinct methods, namely replica casting, laser ablation and hot embossing. The geometry of the channels was chosen to ensure that crystallization occurs in a convection-free environment. The transparency of the materials is compatible with crystal growth monitoring by optical microscopy. The quality of the protein 3D structures derived from on-chip crystal analysis by X-ray diffraction using a synchrotron radiation was used to identify the most appropriate polymers. Altogether the results demonstrate that for a novel biomolecule, all steps from the initial search of crystallization conditions to X-ray diffraction data collection for 3D structure determination can be performed in a single chip. |
| Langue du texte intégral |
Anglais |
|
| DOI |
10.1039/b819362b |
| Journal |
Lab on a Chip |
| Audience |
internationale |
| Date de publication |
21/05/2009 |
| Date de publication électronique |
02/03/2009 |
| Volume |
9 |
| Numéro |
10 |
| Page, identifiant, ... |
1412-21 |
|
| Descripteur(s) MeSH |
Crystallization; Crystallography, X-Ray; Dimethylpolysiloxanes; Macromolecular Substances; Microfluidic Analytical Techniques; Polymethyl Methacrylate |
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