5X7U

Trehalose synthase from Thermobaculum terrenum


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 

wwPDB Validation 3D Report Full Report



Literature

Structural Characteristics and Function of a New Kind of Thermostable Trehalose Synthase from Thermobaculum terrenum.

Wang, J.Ren, X.Wang, R.Su, J.Wang, F.

(2017) J Agric Food Chem 65: 7726-7735

  • DOI: 10.1021/acs.jafc.7b02732
  • Primary Citation of Related Structures:  
    5X7U

  • PubMed Abstract: 
  • Trehalose has important applications in the food industry and pharmaceutical manufacturing. The thermostable enzyme trehalose synthase from Thermobaculum terrenum (TtTS) catalyzes the reversible interconversion of maltose and trehalose. Here, we inve ...

    Trehalose has important applications in the food industry and pharmaceutical manufacturing. The thermostable enzyme trehalose synthase from Thermobaculum terrenum (TtTS) catalyzes the reversible interconversion of maltose and trehalose. Here, we investigated the structural characteristics of TtTS in complex with the inhibitor TriS. TtTS exhibits the typical three domain glycoside hydrolase family 13 structure. The catalytic cleft consists of Asp202-Glu244-Asp310 and various conserved substrate-binding residues. However, among trehalose synthases, TtTS demonstrates obvious thermal stability. TtTS has more polar (charged) amino acids distributed on its protein structure surface and more aromatic amino acids buried within than other mesophilic trehalose synthases. Furthermore, TtTS structural analysis revealed four potential metal ion-binding sites rather than the two in a homologous structure. These factors may render TtTS relatively more thermostable among mesophilic trehalose synthases. The detailed thermophilic enzyme structure provided herein may provide guidance for further protein engineering in the design of stabilized enzymes.


    Organizational Affiliation

    State Key Laboratory of Microbial Technology, School of Life Sciences, Shandong University , Jinan, Shandong 250100, P.R. China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Trehalose synthaseA549Thermobaculum terrenum ATCC BAA-798Mutation(s): 0 
Gene Names: Tter_0330
EC: 5.4.99.16
Find proteins for D1CE96 (Thermobaculum terrenum (strain ATCC BAA-798 / YNP1))
Explore D1CE96 
Go to UniProtKB:  D1CE96
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TRS
Query on TRS

Download CCD File 
A
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
 Ligand Interaction
MG
Query on MG

Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 
  • Space Group: I 41 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 159.176α = 90
b = 159.176β = 90
c = 152.815γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data collection
HKL-2000data scaling
HKL-3000phasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2017-02-27 
  • Released Date: 2018-02-28 
  • Deposition Author(s): Su, J., Wang, F.

Revision History 

  • Version 1.0: 2018-02-28
    Type: Initial release