6TCA:
reference: MAP Kinase-Mediated Activation of RSK1 and MK2 Substrate Kinases., Sok P, Gogl G, Kumar GS, Alexa A, Singh N, Kirsch K, Sebo A, Drahos L, Gaspari Z, Peti W, Remenyi A, Structure. 2020 Jul 6. pii: S0969-2126(20)30210-0. doi:, 10.1016/j.str.2020.06.007. PMID: 32649858

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