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: 2.9 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.210 

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 - determined by Shaban, N., Harvey, S., Perrino, F.W., Hollis, T.  

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
  • Primary Citation of Related Structures:  

  • 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

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ribonuclease H2 subunit A
A
301Mus musculusMutation(s): 0 
Gene Names: Rnaseh2a (Rnasehi)
EC: 3.1.26.4
Find proteins for Q9CWY8 (Mus musculus)
Go to UniProtKB:  Q9CWY8
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ribonuclease H2 subunit B
B
332Mus musculusMutation(s): 0 
Gene Names: Rnaseh2b (Dleu8)
Find proteins for Q80ZV0 (Mus musculus)
Go to UniProtKB:  Q80ZV0
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Ribonuclease H2 subunit C
C
166Mus musculusMutation(s): 0 
Gene Names: Rnaseh2c (Ayp1)
Find proteins for Q9CQ18 (Mus musculus)
Go to UniProtKB:  Q9CQ18
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.210 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 279.290α = 90.00
b = 40.420β = 90.00
c = 67.820γ = 90.00
Software Package:
Software NamePurpose
BUSTERrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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