RESEARCH ARTICLE FIH Regulates Cellular Metabolism through Hydroxylation of the Deubiquitinase OTUB1 Carsten C. Scholz1,2,3,4*, Javier Rodriguez1, Christina Pickel4, Stephen Burr5, Jacqueline- alba Fabrizio6, Karen A. Nolan4, Patrick Spielmann4, Miguel A. S. Cavadas1,3, Bianca Crifo2,3, Doug N. Halligan2,3, James A. Nathan5, Daniel J. Peet6, Roland H. Wenger4, Alex Von Kriegsheim1, Eoin P. Cummins2,3, Cormac T. Taylor1,2,3 1 Systems Biology Ireland, University College Dublin, Belfield, Dublin, Ireland, 2 School of Medicine and Medical Science, University College Dublin, Belfield, Dublin, Ireland, 3 The Conway Institute, University College Dublin, Belfield, Dublin, Ireland, 4 Institute of Physiology and Zürich Center for Integrative Human a11111 Physiology (ZIHP), University of Zürich, Zürich, Switzerland, 5 Cambridge Institute for Medical Research, Department of Medicine, University of Cambridge, Cambridge Biomedical Research Centre, Cambridge, United Kingdom, 6 School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia *
[email protected] OPEN ACCESS Abstract Citation: Scholz CC, Rodriguez J, Pickel C, Burr S, The asparagine hydroxylase, factor inhibiting HIF (FIH), confers oxygen-dependence upon Fabrizio J-a, Nolan KA, et al. (2016) FIH Regulates the hypoxia-inducible factor (HIF), a master regulator of the cellular adaptive response to Cellular Metabolism through Hydroxylation of the Deubiquitinase OTUB1. PLoS Biol 14(1): e1002347. hypoxia. Studies investigating whether asparagine hydroxylation is a general regulatory doi:10.1371/journal.pbio.1002347 oxygen-dependent modification have identified multiple non-HIF targets for FIH. However, Academic Editor: Celeste Simon, University of the functional consequences of this outside of the HIF pathway remain unclear. Here, we Pennsylvania, UNITED STATES demonstrate that the deubiquitinase ovarian tumor domain containing ubiquitin aldehyde Received: October 14, 2015 binding protein 1 (OTUB1) is a substrate for hydroxylation by FIH on N22.