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Nat Methods. 2009 Jan;6(1):71-4. doi: 10.1038/nmeth.1289. Epub 2008 Dec 21.

An in vitro microfluidic approach to generating protein-interaction networks.

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  • 1Department of Bioengineering, Stanford University and Howard Hughes Medical Institute, 318 Campus Drive, Stanford, CA 94305, USA.


We developed an in vitro protein expression and interaction analysis platform based on a highly parallel and sensitive microfluidic affinity assay, and used it for 14,792 on-chip experiments, which exhaustively measured the protein-protein interactions of 43 Streptococcus pneumoniae proteins in quadruplicate. The resulting network of 157 interactions was denser than expected based on known networks. Analysis of the network revealed previously undescribed physical interactions among members of some biochemical pathways.

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