Using liquid crystals to report membrane proteins captured by affinity microcontact printing from cell lysates and membrane extracts

Chang Hyun Jang, Matthew L. Tingey, Nichole L. Korpi, Gregory J. Wiepz, Joan H. Schiller, Paul J. Bertics, Nicholas L. Abbott

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63 Scopus citations

Abstract

The chemical heterogeneity of proteins makes development of general and facile surface-based methods for protein analysis a substantial challenge, particularly when analyzing transmembrane proteins. Here, we report a simple surface-based procedure that permits detection of transmembrane proteins from crude cell lysates and cell membrane extracts. The method relies on the use of thermotropic liquid crystals to amplify and report the presence of the transmembrane proteins captured by an affinity ligand on the surface of an elastomeric stamp. A merit of this approach is that the proteins can be imaged on surfaces without requiring the use of matched pairs of antibodies, labels, or complex instrumentation. Detection of epidermal growth factor receptor, a transmembrane glycoprotein, is demonstrated.

Original languageEnglish (US)
Pages (from-to)8912-8913
Number of pages2
JournalJournal of the American Chemical Society
Volume127
Issue number25
DOIs
Publication statusPublished - Jun 29 2005

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ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Jang, C. H., Tingey, M. L., Korpi, N. L., Wiepz, G. J., Schiller, J. H., Bertics, P. J., & Abbott, N. L. (2005). Using liquid crystals to report membrane proteins captured by affinity microcontact printing from cell lysates and membrane extracts. Journal of the American Chemical Society, 127(25), 8912-8913. https://doi.org/10.1021/ja051079g