6FPU

tRNA guanine Transglycosylase (TGT) in co-crystallized complex with 6-amino-2-((((3aS,5aR,8bS)-2,2,7,7-tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4',5'-d]pyran-3a-yl)methyl)amino)-1,7-dihydro-8H-imidazo[4,5-g]quinazolin-8-one


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.36 Å
  • R-Value Free: 0.154 
  • R-Value Work: 0.128 
  • R-Value Observed: 0.129 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Sugar Acetonides are a Superior Motif for Addressing the Large, Solvent-Exposed Ribose-33 Pocket of tRNA-Guanine Transglycosylase.

Movsisyan, L.D.Schafer, E.Nguyen, A.Ehrmann, F.R.Schwab, A.Rossolini, T.Zimmerli, D.Wagner, B.Daff, H.Heine, A.Klebe, G.Diederich, F.

(2018) Chemistry 24: 9957-9967

  • DOI: https://doi.org/10.1002/chem.201801756
  • Primary Citation of Related Structures:  
    6FMN, 6FPU

  • PubMed Abstract: 

    The intestinal disease shigellosis caused by Shigella bacteria affects over 120 million people annually. There is an urgent demand for new drugs as resistance against common antibiotics emerges. Bacterial tRNA-guanine transglycosylase (TGT) is a druggable target and controls the pathogenicity of Shigella flexneri. We report the synthesis of sugar-functionalized lin-benzoguanines addressing the ribose-33 pocket of TGT from Zymomonas mobilis. Ligand binding was analyzed by isothermal titration calorimetry and X-ray crystallography. Pocket occupancy was optimized by variation of size and protective groups of the sugars. The participation of a polycyclic water-cluster in the recognition of the sugar moiety was revealed. Acetonide-protected ribo- and psicofuranosyl derivatives are highly potent, benefiting from structural rigidity, good solubility, and metabolic stability. We conclude that sugar acetonides have a significant but not yet broadly recognized value in drug development.


  • Organizational Affiliation

    Laboratorium für Organische Chemie, ETH Zurich, Vladimir-Prelog-Weg 3, HCI, 8093, Zurich, Switzerland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Queuine tRNA-ribosyltransferase386Zymomonas mobilis subsp. mobilis ZM4 = ATCC 31821Mutation(s): 1 
Gene Names: tgtZMO0363
EC: 2.4.2.29
UniProt
Find proteins for P28720 (Zymomonas mobilis subsp. mobilis (strain ATCC 31821 / ZM4 / CP4))
Explore P28720 
Go to UniProtKB:  P28720
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP28720
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
E48 Binding MOAD:  6FPU Kd: 321 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.36 Å
  • R-Value Free: 0.154 
  • R-Value Work: 0.128 
  • R-Value Observed: 0.129 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.623α = 90
b = 64.69β = 93.49
c = 70.502γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing
Cootmodel building

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-03-13
    Type: Initial release
  • Version 1.1: 2024-01-17
    Changes: Data collection, Database references, Refinement description