OGFOD1 catalyzes prolyl hydroxylation of RPS23 and is involved in translation control and stress granule formation.

rachelle singleton, P Liu-Yi, F Formenti, Wei Ge, Rok Sekirnik, R Fischer, Julie Adam, Patrick Pollard, Alex Wolf, A Thalhammer, Christoph Loenarz, Emily Flashman, Atsushi Yamamoto, Mathew Coleman, Benedikt Kessler, pablo wappner, Christopher J Schofield, Peter J Ratcliffe, Matthew E Cockman

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)
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Abstract

2-Oxoglutarate (2OG) and Fe(II)-dependent oxygenase domain-containing protein 1 (OGFOD1) is predicted to be a conserved 2OG oxygenase, the catalytic domain of which is related to hypoxia-inducible factor prolyl hydroxylases. OGFOD1 homologs in yeast are implicated in diverse cellular functions ranging from oxygen-dependent regulation of sterol response genes (Ofd1, Schizosaccharomyces pombe) to translation termination/mRNA polyadenylation (Tpa1p, Saccharomyces cerevisiae). However, neither the biochemical activity of OGFOD1 nor the identity of its substrate has been defined. Here we show that OGFOD1 is a prolyl hydroxylase that catalyzes the posttranslational hydroxylation of a highly conserved residue (Pro-62) in the small ribosomal protein S23 (RPS23). Unusually OGFOD1 retained a high affinity for, and forms a stable complex with, the hydroxylated RPS23 substrate. Knockdown or inactivation of OGFOD1 caused a cell type-dependent induction of stress granules, translational arrest, and growth impairment in a manner complemented by wild-type but not inactive OGFOD1. The work identifies a human prolyl hydroxylase with a role in translational regulation.
Original languageEnglish
Pages (from-to)4031-4036
Number of pages6
JournalNational Academy of Sciences. Proceedings
Volume111
Issue number11
DOIs
Publication statusPublished - 18 Mar 2014

Keywords

  • translational control
  • ribosome
  • 2-oxoglutarate oxygenase
  • hypoxia

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