? Liu S, Su T, Zhang C, Zhang, WM, Zhu D, Su J, Wei T, Wang K, Huang Y, Guo L, Xu S, Zhou NY*, Gu L*. 2015. Crystal structure of PnpCD, a two-subunit hydroquinone 1, 2-dioxygenase, reveals a novel structural class of Fe2+-dependent dioxygenases. J Biol Chem, 290: 24547-24560.