6X5Z:
reference: Cryo-EM and Molecular Docking Shows Myosin Loop 4 Contacts Actin and Tropomyosin on Thin Filaments., Doran MH, Pavadai E, Rynkiewicz MJ, Walklate J, Bullitt E, Moore JR, Regnier M, Geeves MA, Lehman W, Biophys J. 2020 Aug 18;119(4):821-830. doi: 10.1016/j.bpj.2020.07.006. Epub 2020 , Jul 16. PMID: 32730789

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