Abstract
The membrane-bound protein family, P-type ATPases, couples ATP hydrolysis with substrate transport across the membrane and forms an obligatory auto-phosphorylated intermediate in the transport cycle. The metal fluoride compounds, BeF x , AlF x , and MgF x , as phosphate analogs stabilize different enzyme structural states in the phosphoryl transfer/hydrolysis reactions, thereby fixing otherwise short-lived intermediate and transient structural states and enabling their biochemical and atomic-level crystallographic studies. The compounds thus make an essential contribution for understanding of the ATP-driven transport mechanism. Here, with a representative member of P-type ATPase, sarco(endo)plasmic reticulum Ca2+-ATPase (SERCA), we describe the method for their binding and for structural and functional characterization of the bound states, and their assignments to states occurring in the transport cycle.
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Acknowledgement
This work was supported by JSPS KAKENHI Grant Number 23370058.
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Danko, S.J., Suzuki, H. (2016). The Use of Metal Fluoride Compounds as Phosphate Analogs for Understanding the Structural Mechanism in P-type ATPases. In: Bublitz, M. (eds) P-Type ATPases. Methods in Molecular Biology, vol 1377. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-3179-8_19
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DOI: https://doi.org/10.1007/978-1-4939-3179-8_19
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