2PVI

PVUII ENDONUCLEASE COMPLEXED TO AN IODINATED COGNATE DNA

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.76 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.188 

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This is version 1.3 of the entry. See complete history. 


Literature

How is modification of the DNA substrate recognized by the PvuII restriction endonuclease?

Horton, J.R., Bonventre, J., Cheng, X.

(1998) J Biol Chem 379: 451-458

  • DOI: 10.1515/bchm.1998.379.4-5.451
  • Primary Citation of Related Structures:  
    2PVI

  • PubMed Abstract: 

    • In restriction-modification systems, cleavage of substrate sites in cellular DNA by the restriction endonuclease is prevented by the action of a cognate methyltransferase that acts on the same substrate sites. The PvuII restriction endonuclease (R.PvuII) has been structurally characterized in a complex with substrate DNA (Cheng et al ...

    In restriction-modification systems, cleavage of substrate sites in cellular DNA by the restriction endonuclease is prevented by the action of a cognate methyltransferase that acts on the same substrate sites. The PvuII restriction endonuclease (R.PvuII) has been structurally characterized in a complex with substrate DNA (Cheng et al., 1994) and as an apoenzyme (Athanasiadis et al., 1994). We report here a structure, determined to 1.9 A resolution by crystallography, of a complex between R.PvuII and iodinated DNA. The presence of an iodine at the 5-carbon of the methylatable cytosine results in the following changes in the protein: His84 moved away from the modified base; this movement was amplified in His85 and disrupts an intersubunit hydrogen bond; and the base modification disturbs the distribution of water molecules that associate with these histidine residues and the area of the scissile bond. Considering these observations, hypotheses are given as to why a similar oligonucleotide, where a methyl group resides on the 5-carbon of the methylatable cytosine, is slowly cleaved by R.PvuII (Rice et al., 1995).

    Related Citations: 
    • Expression, Purification, and Crystallization of Restriction Endonuclease PvuII with DNA Containing its Recognition Site
      Balendiran, K., Bonventre, J., Knott, R., Jack, W., Benner, J., Schildkraut, I., Anderson, J.E.
      (1994) Proteins 19: 77
    • Structure of PvuII Endonuclease with Cognate DNA
      Cheng, X., Balendiran, K., Schildkraut, I., Anderson, J.E.
      (1994) EMBO J 13: 3927
    Organizational Affiliation: 

    Department of Biochemistry, Emory University School of Medicine, Atlanta, GA 30322, USA.



Macromolecules

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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
TYPE II RESTRICTION ENZYME PVUIIC [auth A],
D [auth B]		157Proteus vulgarisMutation(s): 2 
EC: 3.1.21.4
UniProt
Find proteins for P23657 (Proteus hauseri)
Explore P23657 
Go to UniProtKB:  P23657
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23657
Protein Feature View
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  • Reference Sequence

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Entity ID: 1
MoleculeChainsLengthOrganismImage
DNA (5'-D(*TP*GP*AP*CP*CP*AP*GP*(C38)P*TP*GP*GP*TP*C)-3')A [auth C],
B [auth D]		13N/A
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.76 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.188 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 95.8α = 90
b = 86.3β = 90
c = 48.5γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 1998-11-01 
  • Released Date: 1999-12-20 
    • Deposition Author(s): Horton, J., Cheng, X.

Revision History  (Full details and data files)

  • Version 1.0: 1999-12-20
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-11-03
    Changes: Database references, Derived calculations