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. 2021 Aug 2;297(3):101040. doi: 10.1016/j.jbc.2021.101040

Figure 8.

Figure 8

Schematic representation of allosteric interactions among the ligand sites to enhance RyR1 channel opening probability. ATP- and caffeine-binding sites communicate with the Ca2+-binding site in the absence of Ca2+ and merge with the Ca2+-binding site—pore pathway in the presence of Ca2+ to amplify RyR1 activity. RyR1, ryanodine receptor type 1