5XHA

Aspergillus kawachii beta-fructofuranosidase complexed with fructose


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of a beta-fructofuranosidase with high transfructosylation activity from Aspergillus kawachii

Nagaya, M.Kimura, M.Gozu, Y.Sato, S.Hirano, K.Tochio, T.Nishikawa, A.Tonozuka, T.

(2017) Biosci. Biotechnol. Biochem. 81: 1786-1795

  • DOI: 10.1080/09168451.2017.1353405
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • β-Fructofuranosidases belonging to glycoside hydrolase family (GH) 32 are enzymes that hydrolyze sucrose. Some GH32 enzymes also catalyze transfructosylation to produce fructooligosaccharides. We found that Aspergillus kawachii IFO 4308 β-fructofuran ...

    β-Fructofuranosidases belonging to glycoside hydrolase family (GH) 32 are enzymes that hydrolyze sucrose. Some GH32 enzymes also catalyze transfructosylation to produce fructooligosaccharides. We found that Aspergillus kawachii IFO 4308 β-fructofuranosidase (AkFFase) produces fructooligosaccharides, mainly 1-kestose, from sucrose. We determined the crystal structure of AkFFase. AkFFase is composed of an N-terminal small component, a β-propeller catalytic domain, an α-helical linker, and a C-terminal β-sandwich, similar to other GH32 enzymes. AkFFase forms a dimer, and the dimerization pattern is different from those of other oligomeric GH32 enzymes. The complex structure of AkFFase with fructose unexpectedly showed that fructose binds both subsites -1 and +1, despite the fact that the catalytic residues were not mutated. Fructose at subsite +1 interacts with Ile146 and Glu296 of AkFFase via direct hydrogen bonds.


    Organizational Affiliation

    a Department of Applied Biological Science , Tokyo University of Agriculture and Technology , Fuchu , Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Extracellular invertase
A
605Aspergillus kawachii (strain NBRC 4308)Mutation(s): 0 
Find proteins for G7XM46 (Aspergillus kawachii (strain NBRC 4308))
Go to UniProtKB:  G7XM46
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
FRU
Query on FRU

Download SDF File 
Download CCD File 
A
FRUCTOSE
C6 H12 O6
RFSUNEUAIZKAJO-ARQDHWQXSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.179 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 108.357α = 90.00
b = 108.357β = 90.00
c = 152.852γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data reduction
REFMACrefinement
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-07-19
    Type: Initial release
  • Version 1.1: 2017-08-02
    Type: Database references
  • Version 1.2: 2017-08-16
    Type: Database references