Abstract
Conserved structural waters trapped within GPCRs may form water networks indispensable for GPCR’s signaling functions. Radiolysis-based hydroxyl radical footprinting (HRF) strategies coupled to mass spectrometry have been used to explore the structural waters within rhodopsin in multiple signaling states. These approaches, combined with 18O labeling, can be used to identify the locations of structural waters in the transmembrane region and measure rates of water exchange with bulk solvent. Reorganizations of structural waters upon activation of signaling can be explicitly observed with this approach, and this provides a unique look at the structural modules driving the signaling process.
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Wang, L., Chance, M.R. (2015). Detection of Structural Waters and Their Role in Structural Dynamics of Rhodopsin Activation. In: Jastrzebska, B. (eds) Rhodopsin. Methods in Molecular Biology, vol 1271. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-2330-4_7
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DOI: https://doi.org/10.1007/978-1-4939-2330-4_7
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