60S ribosomal protein L8 histidine hydroxylase (NO66) in complex with Mn(II), N-oxalylglycine (NOG) and 60S ribosomal protein L8 (RPL8 G220C) peptide fragment (complex-1)

Experimental Data Snapshot

  • Resolution: 2.51 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report

This is version 1.5 of the entry. See complete history


Ribosomal oxygenases are structurally conserved from prokaryotes to humans.

Chowdhury, R.Sekirnik, R.Brissett, N.C.Krojer, T.Ho, C.H.Ng, S.S.Clifton, I.J.Ge, W.Kershaw, N.J.Fox, G.C.Muniz, J.R.C.Vollmar, M.Phillips, C.Pilka, E.S.Kavanagh, K.L.von Delft, F.Oppermann, U.McDonough, M.A.Doherty, A.J.Schofield, C.J.

(2014) Nature 510: 422-426

  • DOI: 10.1038/nature13263
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • 2-Oxoglutarate (2OG)-dependent oxygenases have important roles in the regulation of gene expression via demethylation of N-methylated chromatin components and in the hydroxylation of transcription factors and splicing factor proteins. Recently, 2OG-d ...

    2-Oxoglutarate (2OG)-dependent oxygenases have important roles in the regulation of gene expression via demethylation of N-methylated chromatin components and in the hydroxylation of transcription factors and splicing factor proteins. Recently, 2OG-dependent oxygenases that catalyse hydroxylation of transfer RNA and ribosomal proteins have been shown to be important in translation relating to cellular growth, TH17-cell differentiation and translational accuracy. The finding that ribosomal oxygenases (ROXs) occur in organisms ranging from prokaryotes to humans raises questions as to their structural and evolutionary relationships. In Escherichia coli, YcfD catalyses arginine hydroxylation in the ribosomal protein L16; in humans, MYC-induced nuclear antigen (MINA53; also known as MINA) and nucleolar protein 66 (NO66) catalyse histidine hydroxylation in the ribosomal proteins RPL27A and RPL8, respectively. The functional assignments of ROXs open therapeutic possibilities via either ROX inhibition or targeting of differentially modified ribosomes. Despite differences in the residue and protein selectivities of prokaryotic and eukaryotic ROXs, comparison of the crystal structures of E. coli YcfD and Rhodothermus marinus YcfD with those of human MINA53 and NO66 reveals highly conserved folds and novel dimerization modes defining a new structural subfamily of 2OG-dependent oxygenases. ROX structures with and without their substrates support their functional assignments as hydroxylases but not demethylases, and reveal how the subfamily has evolved to catalyse the hydroxylation of different residue side chains of ribosomal proteins. Comparison of ROX crystal structures with those of other JmjC-domain-containing hydroxylases, including the hypoxia-inducible factor asparaginyl hydroxylase FIH and histone N(ε)-methyl lysine demethylases, identifies branch points in 2OG-dependent oxygenase evolution and distinguishes between JmjC-containing hydroxylases and demethylases catalysing modifications of translational and transcriptional machinery. The structures reveal that new protein hydroxylation activities can evolve by changing the coordination position from which the iron-bound substrate-oxidizing species reacts. This coordination flexibility has probably contributed to the evolution of the wide range of reactions catalysed by oxygenases.

    Related Citations: 
    • Oxygenase-Catalyzed Ribosome Hydroxylation Occurs in Prokaryotes and Humans.
      Ge, W.,Wolf, A.,Feng, T.,Ho, C.,Sekirnik, R.,Zayer, A.,Granatino, N.,Cockman, M.E.,Loenarz, C.,Loik, N.D.,Hardy, A.P.,Claridge, T.D.W.,Hamed, R.B.,Chowdhury, R.,Gong, L.,Robinson, C.V.,Trudgian, D.C.,Jiang, M.,Mackeen, M.M.,Mccullagh, J.S.,Gordiyenko, Y.,Thalhammer, A.,Yamamoto, A.,Yang, M.,Liu-Yi, P.,Zhang, Z.,Schmidt-Zachmann, M.,Kessler, B.M.,Ratcliffe, P.J.,Preston, G.M.,Coleman, M.L.,Schofield, C.J.
      (2012) Nat.Chem.Biol. 8: 960

    Organizational Affiliation

    The Department of Chemistry and Oxford Centre for Integrative Systems Biology, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K.


Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
A, B
467Homo sapiensMutation(s): 0 
Gene Names: RIOX1 (C14orf169, MAPJD, NO66)
Find proteins for Q9H6W3 (Homo sapiens)
Go to Gene View: RIOX1
Go to UniProtKB:  Q9H6W3
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
C, D
35Homo sapiensMutation(s): 1 
Gene Names: RPL8
Find proteins for P62917 (Homo sapiens)
Go to Gene View: RPL8
Go to UniProtKB:  P62917
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
Query on MN

Download SDF File 
Download CCD File 
A, B
 Ligand Interaction
Query on EDO

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Download CCD File 
A, B
C2 H6 O2
 Ligand Interaction
Query on OGA

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Download CCD File 
A, B
C4 H5 N O5
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Resolution: 2.51 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.228 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 154.770α = 90.00
b = 83.500β = 100.20
c = 96.870γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-05-14
    Type: Initial release
  • Version 1.1: 2014-05-21
    Type: Database references
  • Version 1.2: 2014-06-25
    Type: Database references
  • Version 1.3: 2018-02-21
    Type: Database references
  • Version 1.4: 2019-01-30
    Type: Data collection, Experimental preparation
  • Version 1.5: 2019-02-06
    Type: Data collection, Experimental preparation