The crystal structure of macrolide glycosyltransferases: A blueprint for antibiotic engineering

Experimental Data Snapshot

  • Resolution: 1.70 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 

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The Crystal Structure of Two Macrolide Glycosyltransferases Provides a Blueprint for Host Cell Antibiotic Immunity.

Bolam, D.N.Roberts, S.M.Proctor, M.R.Turkenburg, J.P.Dodson, E.J.Martinez-Fleites, C.Yang, M.Davis, B.G.Davies, G.J.Gilbert, H.J.

(2007) Proc Natl Acad Sci U S A 104: 5336

  • DOI: https://doi.org/10.1073/pnas.0607897104
  • Primary Citation of Related Structures:  
    2IYA, 2IYF

  • PubMed Abstract: 

    Glycosylation of macrolide antibiotics confers host cell immunity from endogenous and exogenous agents. The Streptomyces antibioticus glycosyltransferases, OleI and OleD, glycosylate and inactivate oleandomycin and diverse macrolides including erythromycin, respectively. The structure of these enzyme-ligand complexes, in tandem with kinetic analysis of site-directed variants, provide insight into the interaction of macrolides with their synthetic apparatus. Erythromycin binds to OleD and the 23S RNA of its target ribosome in the same conformation and, although the antibiotic contains a large number of polar groups, its interaction with these macromolecules is primarily through hydrophobic contacts. Erythromycin and oleandomycin, when bound to OleD and OleI, respectively, adopt different conformations, reflecting a subtle effect on sugar positioning by virtue of a single change in the macrolide backbone. The data reported here provide structural insight into the mechanism of resistance to both endogenous and exogenous antibiotics, and will provide a platform for the future redesign of these catalysts for antibiotic remodelling.

  • Organizational Affiliation

    Institute for Cell and Molecular Biosciences, The Medical School, University of Newcastle upon Tyne, Framlington Place, Newcastle upon Tyne NE2 4HH, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
424Streptomyces antibioticusMutation(s): 0 
Gene Names: oleI
EC: 2.4.1
Find proteins for Q3HTL7 (Streptomyces antibioticus)
Explore Q3HTL7 
Go to UniProtKB:  Q3HTL7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ3HTL7
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on ZIO

Download Ideal Coordinates CCD File 
D [auth A],
F [auth B]
C35 H61 N O12
Query on UDP

Download Ideal Coordinates CCD File 
C [auth A],
E [auth B]
C9 H14 N2 O12 P2
Experimental Data & Validation

Experimental Data

  • Resolution: 1.70 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.338α = 90
b = 103.471β = 94.82
c = 74.59γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2007-03-27
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-01-24
    Changes: Source and taxonomy