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Conformational antibody binding to a native, cell-free expressed GPCR in block copolymer membranes. | LitMetric

Conformational antibody binding to a native, cell-free expressed GPCR in block copolymer membranes.

PLoS One

ACM Biolabs Pte Ltd, Research Techno Plaza XF-6, Singapore, Singapore; Centre for Biomimetic Sensor Science, School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore.

Published: June 2015

AI Article Synopsis

Article Abstract

G-protein coupled receptors (GPCRs) play a key role in physiological processes and are attractive drug targets. Their biophysical characterization is, however, highly challenging because of their innate instability outside a stabilizing membrane and the difficulty of finding a suitable expression system. We here show the cell-free expression of a GPCR, CXCR4, and its direct embedding in diblock copolymer membranes. The polymer-stabilized CXCR4 is readily immobilized onto biosensor chips for label-free binding analysis. Kinetic characterization using a conformationally sensitive antibody shows the receptor to exist in the correctly folded conformation, showing binding behaviour that is commensurate with heterologously expressed CXCR4.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4203850PMC
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0110847PLOS

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