3G2M

Crystal Structure of the Glycopeptide N-methyltransferase MtfA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.238 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and function of the glycopeptide N-methyltransferase MtfA, a tool for the biosynthesis of modified glycopeptide antibiotics.

Shi, R.Lamb, S.S.Zakeri, B.Proteau, A.Cui, Q.Sulea, T.Matte, A.Wright, G.D.Cygler, M.

(2009) Chem.Biol. 16: 401-410

  • DOI: 10.1016/j.chembiol.2009.02.007
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • There is a considerable interest in the modification of existing antibiotics to generate new antimicrobials. Glycopeptide antibiotics (GPAs) are effective against serious Gram-positive bacterial pathogens including methicillin-resistant Staphylococcu ...

    There is a considerable interest in the modification of existing antibiotics to generate new antimicrobials. Glycopeptide antibiotics (GPAs) are effective against serious Gram-positive bacterial pathogens including methicillin-resistant Staphylococcus aureus. However, resistance to these antibiotics is becoming a serious problem requiring new strategies. We show that the Amycolatopsis orientalis (S)-adenosyl-L-methionine-dependent methyltransferase MtfA, from the vancomycin-class GPA chloroeremomycin biosynthetic pathway, catalyzes in vivo and in vitro methyl transfer to generate methylated GPA derivatives of the teicoplanin class. The crystal structure of MtfA complexed with (S)-adenosyl-L-methionine, (S)-adenosylhomocysteine, or sinefungin inhibitor, coupled with mutagenesis, identified His228 as a likely general base required for methyl transfer to the N terminus of the glycopeptide. Computational docking and molecular dynamics simulations were used to model binding of demethyl-vancomycin aglycone to MtfA. These results demonstrate its utility as a tool for engineering methylated analogs of GPAs.


    Organizational Affiliation

    Department of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montréal, QC H3G 1Y6, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PCZA361.24
A, B
299Amycolatopsis orientalisMutation(s): 0 
Find proteins for O52805 (Amycolatopsis orientalis)
Go to UniProtKB:  O52805
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.238 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 127.443α = 90.00
b = 71.682β = 103.02
c = 75.189γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
HKL-2000data reduction
HKL-2000data scaling
DENZOdata reduction
REFMACrefinement
SCALEPACKdata scaling
SHELXSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-05-05
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description