4D47

X-ray structure of the levansucrase from Erwinia amylovora


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.77 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.262 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Crystal Structure of Erwinia Amylovora Levansucrase Provides a Snapshot of the Products of Sucrose Hydrolysis Trapped Into the Active Site.

Wuerges, J.Caputi, L.Cianci, M.Boivin, S.Meijers, R.Benini, S.

(2015) J.Struct.Biol. 191: 290

  • DOI: 10.1016/j.jsb.2015.07.010

  • PubMed Abstract: 
  • Levansucrases are members of the glycoside hydrolase family and catalyse both the hydrolysis of the substrate sucrose and the transfer of fructosyl units to acceptor molecules. In the presence of sufficient sucrose, this may either lead to the produc ...

    Levansucrases are members of the glycoside hydrolase family and catalyse both the hydrolysis of the substrate sucrose and the transfer of fructosyl units to acceptor molecules. In the presence of sufficient sucrose, this may either lead to the production of fructooligosaccharides or fructose polymers. Aim of this study is to rationalise the differences in the polymerisation properties of bacterial levansucrases and in particular to identify structural features that determine different product spectrum in the levansucrase of the Gram-negative bacterium Erwinia amylovora (Ea Lsc, EC 2.4.1.10) as compared to Gram-positive bacteria such as Bacillus subtilis levansucrase. Ea is an enterobacterial pathogen responsible for the Fire Blight disease in rosaceous plants (e.g., apple and pear) with considerable interest for the agricultural industry. The crystal structure of Ea Lsc was solved at 2.77 Å resolution and compared to those of other fructosyltransferases from Gram-positive and Gram-negative bacteria. We propose the structural features, determining the different reaction products, to reside in just a few loops at the rim of the active site funnel. Moreover we propose that loop 8 may have a role in product length determination in Gluconacetobacter diazotrophicus LsdA and Microbacterium saccharophilum FFase. The Ea Lsc structure shows for the first time the products of sucrose hydrolysis still bound in the active site.


    Organizational Affiliation

    Bioorganic Chemistry and Bio-Crystallography laboratory (B(2)Cl), Faculty of Science and Technology, Free University of Bolzano, 39100 Bolzano, Italy. Electronic address: jochen.wuerges@unibz.it.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LEVANSUCRASE
A, B, C, D, E, F, G, H
415Erwinia amylovora (strain ATCC 49946 / CCPPB 0273 / Ea273 / 27-3)Mutation(s): 0 
EC: 2.4.1.10
Find proteins for A0A0M3KKU6 (Erwinia amylovora (strain ATCC 49946 / CCPPB 0273 / Ea273 / 27-3))
Go to UniProtKB:  A0A0M3KKU6
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FRU
Query on FRU

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H
FRUCTOSE
C6 H12 O6
RFSUNEUAIZKAJO-ARQDHWQXSA-N
 Ligand Interaction
GLC
Query on GLC

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H
ALPHA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-DVKNGEFBSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.77 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.262 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 155.589α = 90.00
b = 178.736β = 90.00
c = 158.806γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
BALBESphasing
PHENIXrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-08-05
    Type: Initial release
  • Version 1.1: 2015-09-09
    Type: Database references
  • Version 1.2: 2018-03-07
    Type: Data collection, Source and taxonomy