4RCT

Crystal structure of R-protein of NgoAVII restriction endonuclease

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 

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This is version 1.1 of the entry. See complete history. 


Literature

Crystal structure of the R-protein of the multisubunit ATP-dependent restriction endonuclease NgoAVII.

Tamulaitiene, G., Silanskas, A., Grazulis, S., Zaremba, M., Siksnys, V.

(2014) Nucleic Acids Res 42: 14022-14030

  • DOI: 10.1093/nar/gku1237
  • Primary Citation of Related Structures:  
    4RCT, 4RD5, 4RDM

  • PubMed Abstract: 

    • The restriction endonuclease (REase) NgoAVII is composed of two proteins, R.NgoAVII and N.NgoAVII, and shares features of both Type II restriction enzymes and Type I/III ATP-dependent restriction enzymes (see accompanying paper Zaremba et al., 2014). Here we present crystal structures of the R ...

    The restriction endonuclease (REase) NgoAVII is composed of two proteins, R.NgoAVII and N.NgoAVII, and shares features of both Type II restriction enzymes and Type I/III ATP-dependent restriction enzymes (see accompanying paper Zaremba et al., 2014). Here we present crystal structures of the R.NgoAVII apo-protein and the R.NgoAVII C-terminal domain bound to a specific DNA. R.NgoAVII is composed of two domains: an N-terminal nucleolytic PLD domain; and a C-terminal B3-like DNA-binding domain identified previously in BfiI and EcoRII REases, and in plant transcription factors. Structural comparison of the B3-like domains of R.NgoAVII, EcoRII, BfiI and the plant transcription factors revealed a conserved DNA-binding surface comprised of N- and C-arms that together grip the DNA. The C-arms of R.NgoAVII, EcoRII, BfiI and plant B3 domains are similar in size, but the R.NgoAVII N-arm which makes the majority of the contacts to the target site is much longer. The overall structures of R.NgoAVII and BfiI are similar; however, whilst BfiI has stand-alone catalytic activity, R.NgoAVII requires an auxiliary cognate N.NgoAVII protein and ATP hydrolysis in order to cleave DNA at the target site. The structures we present will help formulate future experiments to explore the molecular mechanisms of intersubunit crosstalk that control DNA cleavage by R.NgoAVII and related endonucleases.

    Organizational Affiliation: 

    Department of Protein-DNA Interactions, Institute of Biotechnology, Vilnius University, Graiciuno 8, LT-02241 Vilnius, Lithuania zare@ibt.lt.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Restriction endonuclease R.NgoVIIA, B365Neisseria gonorrhoeae FA 1090Mutation(s): 0 
Gene Names: NGK_0521, NGO0364, NGO_0364
EC: 3.1.21.4
UniProt
Find proteins for Q5F9M9 (Neisseria gonorrhoeae (strain ATCC 700825 / FA 1090))
Explore Q5F9M9 
Go to UniProtKB:  Q5F9M9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5F9M9
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CME
Query on CME		A, B L-PEPTIDE LINKINGC5 H11 N O3 S2CYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.513α = 90
b = 106.799β = 90
c = 108.235γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
MLPHAREphasing
DMphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
StructureStudiodata collection

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-24
    Type: Initial release
  • Version 1.1: 2014-12-31
    Changes: Database references