5IGT

Macrolide 2'-phosphotransferase type I - complex with guanosine and erythromycin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.39 Å
  • R-Value Free: 0.165 
  • R-Value Work: 0.151 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural Basis for Kinase-Mediated Macrolide Antibiotic Resistance.

Fong, D.H.Burk, D.L.Blanchet, J.Yan, A.Y.Berghuis, A.M.

(2017) Structure 25: 750-761.e5

  • DOI: 10.1016/j.str.2017.03.007
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The macrolides are a class of antibiotic, characterized by a large macrocyclic lactone ring that can be inactivated by macrolide phosphotransferase enzymes. We present structures for MPH(2')-I and MPH(2')-II in the apo state, and in complex with GTP ...

    The macrolides are a class of antibiotic, characterized by a large macrocyclic lactone ring that can be inactivated by macrolide phosphotransferase enzymes. We present structures for MPH(2')-I and MPH(2')-II in the apo state, and in complex with GTP analogs and six different macrolides. These represent the first structures from the two main classes of macrolide phosphotransferases. The structures show that the enzymes are related to the aminoglycoside phosphotransferases, but are distinguished from them by the presence of a large interdomain linker that contributes to an expanded antibiotic binding pocket. This pocket is largely hydrophobic, with a negatively charged patch located at a conserved aspartate residue, rationalizing the broad-spectrum resistance conferred by the enzymes. Complementary mutation studies provide insights into factors governing substrate specificity. A comparison with macrolides bound to their natural target, the 50S ribosome, suggests avenues for next-generation antibiotic development.


    Organizational Affiliation

    Department of Biochemistry, McGill University, Montréal, QC H3G 1Y6, Canada; Groupe de Recherche Axé sur la Structure des Protéines, McGill University, Montréal, QC H3G 0B1, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Macrolide 2'-phosphotransferase
A
301Escherichia coliMutation(s): 0 
Gene Names: mphA (mph(A), mph2)
Find proteins for Q47396 (Escherichia coli)
Go to UniProtKB:  Q47396
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GMP
Query on GMP

Download SDF File 
Download CCD File 
A
GUANOSINE
C10 H13 N5 O5
NYHBQMYGNKIUIF-UUOKFMHZSA-N
 Ligand Interaction
ERY
Query on ERY

Download SDF File 
Download CCD File 
A
ERYTHROMYCIN A
C37 H67 N O13
ULGZDMOVFRHVEP-RWJQBGPGSA-N
 Ligand Interaction
TRS
Query on TRS

Download SDF File 
Download CCD File 
A
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
TRIS BUFFER
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
ERYKd: 200 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.39 Å
  • R-Value Free: 0.165 
  • R-Value Work: 0.151 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 45.270α = 90.00
b = 45.270β = 90.00
c = 247.050γ = 120.00
Software Package:
Software NamePurpose
XSCALEdata scaling
PHENIXphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Canadian Institutes of Health ResearchCanadaMOP-13107

Revision History 

  • Version 1.0: 2017-04-26
    Type: Initial release
  • Version 1.1: 2017-05-03
    Type: Database references
  • Version 1.2: 2017-05-17
    Type: Database references
  • Version 1.3: 2017-09-13
    Type: Author supporting evidence