Dioxygen binding is controlled by the protein environment in non-heme FeII and 2-oxoglutarate oxygenases: a study on histone demethylase PHF8 and an ethylene-forming enzyme by Chaturvedi, SS, Thomas, MG, Bathir Jaber Sathik Rifayee, S, White, W, Wildey, J, Warner, C, Schofield, CJ, Hu, J, Hausinger, RP, Karabencheva-Christova, TG, Christov, CZ