Structural basis for the regulation of human 5,10-methylenetetrahydrofolate reductase by phosphorylation and S-adenosylmethionine inhibition by Froese, DS, Kopec, JM, Rembeza, E, Bezerra, GA, Oberholzer, AE, Suormala, T, Lutz, S, Chalk, R, Borkowska, O, Baumgartner, MR, Yue, WW