4F0Q

MspJI Restriction Endonuclease - P21 Form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.212 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure and cleavage activity of the tetrameric MspJI DNA modification-dependent restriction endonuclease.

Horton, J.R.Mabuchi, M.Y.Cohen-Karni, D.Zhang, X.Griggs, R.M.Samaranayake, M.Roberts, R.J.Zheng, Y.Cheng, X.

(2012) Nucleic Acids Res 40: 9763-9773

  • DOI: 10.1093/nar/gks719
  • Primary Citation of Related Structures:  
    4F0P, 4F0Q

  • PubMed Abstract: 
  • The MspJI modification-dependent restriction endonuclease recognizes 5-methylcytosine or 5-hydroxymethylcytosine in the context of CNN(G/A) and cleaves both strands at fixed distances (N(12)/N(16)) away from the modified cytosine at the 3'-side. We determined the crystal structure of MspJI of Mycobacterium sp ...

    The MspJI modification-dependent restriction endonuclease recognizes 5-methylcytosine or 5-hydroxymethylcytosine in the context of CNN(G/A) and cleaves both strands at fixed distances (N(12)/N(16)) away from the modified cytosine at the 3'-side. We determined the crystal structure of MspJI of Mycobacterium sp. JLS at 2.05-Å resolution. Each protein monomer harbors two domains: an N-terminal DNA-binding domain and a C-terminal endonuclease. The N-terminal domain is structurally similar to that of the eukaryotic SET and RING-associated domain, which is known to bind to a hemi-methylated CpG dinucleotide. Four protein monomers are found in the crystallographic asymmetric unit. Analytical gel-filtration and ultracentrifugation measurements confirm that the protein exists as a tetramer in solution. Two monomers form a back-to-back dimer mediated by their C-terminal endonuclease domains. Two back-to-back dimers interact to generate a tetramer with two double-stranded DNA cleavage modules. Each cleavage module contains two active sites facing each other, enabling double-strand DNA cuts. Biochemical, mutagenesis and structural characterization suggest three different monomers of the tetramer may be involved respectively in binding the modified cytosine, making the first proximal N(12) cleavage in the same strand and then the second distal N(16) cleavage in the opposite strand. Both cleavage events require binding of at least a second recognition site either in cis or in trans.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Restriction endonucleaseA, B, C, D456Mycobacterium sp. JLSMutation(s): 0 
Gene Names: Mjls_0822
UniProt
Find proteins for A0A0J9X157 (Mycobacterium sp. (strain JLS))
Explore A0A0J9X157 
Go to UniProtKB:  A0A0J9X157
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0J9X157
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download Ideal Coordinates CCD File 
E [auth A],
F [auth B],
G [auth C]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.212 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.764α = 90
b = 144.284β = 116.27
c = 87.842γ = 90
Software Package:
Software NamePurpose
SERGUIdata collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-08-08
    Type: Initial release
  • Version 1.1: 2012-08-15
    Changes: Database references
  • Version 1.2: 2012-11-07
    Changes: Database references