1JIV

T4 phage BGT in complex with Mg2+ : Form II

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.07 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.186 

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Literature

High resolution crystal structures of T4 phage beta-glucosyltransferase: induced fit and effect of substrate and metal binding.

Morera, S., Lariviere, L., Kurzeck, J., Aschke-Sonnenborn, U., Freemont, P.S., Janin, J., Ruger, W.

(2001) J Mol Biol 311: 569-577

  • DOI: 10.1006/jmbi.2001.4905
  • Primary Citation of Related Structures:  
    1JEJ, 1JG6, 1JG7, 1JIU, 1JIV, 1JIX

  • PubMed Abstract: 

    • beta-Glucosyltransferase (BGT) is a DNA-modifying enzyme encoded by bacteriophage T4 that transfers glucose from uridine diphosphoglucose to 5-hydroxymethyl cytosine bases of phage T4 DNA. We report six X-ray structures of the substrate-free and the UDP-bound enzyme ...

    beta-Glucosyltransferase (BGT) is a DNA-modifying enzyme encoded by bacteriophage T4 that transfers glucose from uridine diphosphoglucose to 5-hydroxymethyl cytosine bases of phage T4 DNA. We report six X-ray structures of the substrate-free and the UDP-bound enzyme. Four also contain metal ions which activate the enzyme, including Mg(2+) in forms 1 and 2 and Mn(2+) or Ca(2+). The substrate-free BGT structure differs by a domain movement from one previously determined in another space group. Further domain movements are seen in the complex with UDP and the four UDP-metal complexes. Mg(2+), Mn(2+) and Ca(2+) bind near the beta-phosphate of the nucleotide, but they occupy slightly different positions and have different ligands depending on the metal and the crystal form. Whilst the metal site observed in these complexes with the product UDP is not compatible with a role in activating glucose transfer, it approximates the position of the positive charge in the oxocarbonium ion thought to form on the glucose moiety of the substrate during catalysis.

    Related Citations: 
    • T4 phage beta-glucosyltransferase : substrate binding and proposed catalytic mechanism
      Morera, S., Imberty, A., Aschke-Sonnenborn, U., Ruger, W., Freemont, P.S.
      (1999) J Mol Biol 292: 717
    Organizational Affiliation: 

    Laboratoire d'Enzymologie et de Biochimie Structurales, UPR 9063 CNRS, Bât.34, 1 Avenue de la Terrasse, Gif-sur-Yvette, 91198, France. morera@lebs.cnrs-gif.fr



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA BETA-GLUCOSYLTRANSFERASEA351Escherichia virus T4Mutation(s): 0 
Gene Names: bgt
EC: 2.4.1.27
UniProt
Find proteins for P04547 (Enterobacteria phage T4)
Explore P04547 
Go to UniProtKB:  P04547
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04547
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
UDP
Query on UDP
Download Ideal Coordinates CCD File 
D [auth A]URIDINE-5'-DIPHOSPHATE
C9 H14 N2 O12 P2
XCCTYIAWTASOJW-XVFCMESISA-N		 Ligand Interaction
MG
Query on MG
Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]		MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.07 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.186 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.724α = 90
b = 72.749β = 90
c = 79.661γ = 90
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-08-15
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance