Trehalose synthase from Thermobaculum terrenum

Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 

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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: https://doi.org/10.1021/acs.jafc.7b02732
  • Primary Citation of Related Structures:  

  • 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 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

    Faculty of Light Industry, Province Key Laboratory of Microbial Engineering, Qilu University of Technology , Jinan 250353, P.R. China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Trehalose synthase549Thermobaculum terrenum ATCC BAA-798Mutation(s): 0 
Gene Names: Tter_0330
Find proteins for D1CE96 (Thermobaculum terrenum (strain ATCC BAA-798 / YNP1))
Explore D1CE96 
Go to UniProtKB:  D1CE96
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupD1CE96
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • 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
HKL-2000data collection
HKL-2000data scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

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