3P5J

The structure of the human RNase H2 complex defines key interaction interfaces relevant to enzyme function and human disease


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Re-refinement Note

This entry reflects an alternative modeling of the original data in:3KIO


Literature

The Structure of the Human RNase H2 Complex Defines Key Interaction Interfaces Relevant to Enzyme Function and Human Disease.

Reijns, M.A.Bubeck, D.Gibson, L.C.Graham, S.C.Baillie, G.S.Jones, E.Y.Jackson, A.P.

(2011) J Biol Chem 286: 10530-10539

  • DOI: 10.1074/jbc.M110.177394
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Ribonuclease H2 (RNase H2) is the major nuclear enzyme involved in the degradation of RNA/DNA hybrids and removal of ribonucleotides misincorporated in genomic DNA. Mutations in each of the three RNase H2 subunits have been implicated in a human auto ...

    Ribonuclease H2 (RNase H2) is the major nuclear enzyme involved in the degradation of RNA/DNA hybrids and removal of ribonucleotides misincorporated in genomic DNA. Mutations in each of the three RNase H2 subunits have been implicated in a human auto-inflammatory disorder, Aicardi-Goutières Syndrome (AGS). To understand how mutations impact on RNase H2 function we determined the crystal structure of the human heterotrimer. In doing so, we correct several key regions of the previously reported murine RNase H2 atomic model and provide biochemical validation for our structural model. Our results provide new insights into how the subunits are arranged to form an enzymatically active complex. In particular, we establish that the RNASEH2A C terminus is a eukaryotic adaptation for binding the two accessory subunits, with residues within it required for enzymatic activity. This C-terminal extension interacts with the RNASEH2C C terminus and both are necessary to form a stable, enzymatically active heterotrimer. Disease mutations cluster at this interface between all three subunits, destabilizing the complex and/or impairing enzyme activity. Altogether, we locate 25 out of 29 residues mutated in AGS patients, establishing a firm basis for future investigations into disease pathogenesis and function of the RNase H2 enzyme.


    Related Citations: 
    • The structure of the mammalian RNase H2 complex provides insight into RNA.NA hybrid processing to prevent immune dysfunction.
      Shaban, N.M., Harvey, S., Perrino, F.W., Hollis, T.
      (2010) J Biol Chem 285: 3617

    Organizational Affiliation

    Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, Western General Hospital, Edinburgh EH4 2XU, United Kingdom.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ribonuclease H2 subunit AA301Mus musculusMutation(s): 0 
Gene Names: Rnaseh2aRnasehi
EC: 3.1.26.4
Find proteins for Q9CWY8 (Mus musculus)
Explore Q9CWY8 
Go to UniProtKB:  Q9CWY8
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ribonuclease H2 subunit BB332Mus musculusMutation(s): 0 
Gene Names: Rnaseh2bDleu8
Find proteins for Q80ZV0 (Mus musculus)
Explore Q80ZV0 
Go to UniProtKB:  Q80ZV0
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Ribonuclease H2 subunit CC166Mus musculusMutation(s): 0 
Gene Names: Rnaseh2cAyp1
Find proteins for Q9CQ18 (Mus musculus)
Explore Q9CQ18 
Go to UniProtKB:  Q9CQ18
NIH Common Fund Data Resources
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.213 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 279.29α = 90
b = 40.42β = 90
c = 67.82γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-11-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-10-12
    Changes: Other