7ES2

a mutant of glycosyktransferase in complex with UDP and Reb D


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.196 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Catalytic flexibility of rice glycosyltransferase OsUGT91C1 for the production of palatable steviol glycosides.

Zhang, J.Tang, M.Chen, Y.Ke, D.Zhou, J.Xu, X.Yang, W.He, J.Dong, H.Wei, Y.Naismith, J.H.Lin, Y.Zhu, X.Cheng, W.

(2021) Nat Commun 12: 7030-7030

  • DOI: https://doi.org/10.1038/s41467-021-27144-4
  • Primary Citation of Related Structures:  
    7ERX, 7ERY, 7ES0, 7ES1, 7ES2

  • PubMed Abstract: 

    Steviol glycosides are the intensely sweet components of extracts from Stevia rebaudiana. These molecules comprise an invariant steviol aglycone decorated with variable glycans and could widely serve as a low-calorie sweetener. However, the most desirable steviol glycosides Reb D and Reb M, devoid of unpleasant aftertaste, are naturally produced only in trace amounts due to low levels of specific β (1-2) glucosylation in Stevia. Here, we report the biochemical and structural characterization of OsUGT91C1, a glycosyltransferase from Oryza sativa, which is efficient at catalyzing β (1-2) glucosylation. The enzyme's ability to bind steviol glycoside substrate in three modes underlies its flexibility to catalyze β (1-2) glucosylation in two distinct orientations as well as β (1-6) glucosylation. Guided by the structural insights, we engineer this enzyme to enhance the desirable β (1-2) glucosylation, eliminate β (1-6) glucosylation, and obtain a promising catalyst for the industrial production of naturally rare but palatable steviol glycosides.


  • Organizational Affiliation

    Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital of Sichuan University, Sichuan University, 610065, Chengdu, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glycosyltransferase470Oryza sativa Japonica GroupMutation(s): 1 
Gene Names: Os03g0702000OSNPB_030702000
EC: 2.4.1
UniProt
Find proteins for Q0DPB7 (Oryza sativa subsp. japonica)
Explore Q0DPB7 
Go to UniProtKB:  Q0DPB7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ0DPB7
Sequence Annotations
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.196 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.444α = 90
b = 83.496β = 90
c = 110.645γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DIALSdata reduction
Cootmodel building
PHASERphasing
DIALSdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data

  • Released Date: 2021-12-08 
  • Deposition Author(s): Zhu, X.

Funding OrganizationLocationGrant Number
National Science Foundation (NSF, China)China31771910

Revision History  (Full details and data files)

  • Version 1.0: 2021-12-08
    Type: Initial release
  • Version 1.1: 2021-12-15
    Changes: Database references