3R1K

Crystal structure of acetyltransferase Eis from Mycobacterium tuberculosis H37Rv in complex with CoA and an acetamide moiety


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Unusual regioversatility of acetyltransferase Eis, a cause of drug resistance in XDR-TB.

Chen, W.Biswas, T.Porter, V.R.Tsodikov, O.V.Garneau-Tsodikova, S.

(2011) Proc.Natl.Acad.Sci.USA 108: 9804-9808

  • DOI: 10.1073/pnas.1105379108

  • PubMed Abstract: 
  • The emergence of multidrug-resistant and extensively drug-resistant (XDR) tuberculosis (TB) is a serious global threat. Aminoglycoside antibiotics are used as a last resort to treat XDR-TB. Resistance to the aminoglycoside kanamycin is a hallmark of ...

    The emergence of multidrug-resistant and extensively drug-resistant (XDR) tuberculosis (TB) is a serious global threat. Aminoglycoside antibiotics are used as a last resort to treat XDR-TB. Resistance to the aminoglycoside kanamycin is a hallmark of XDR-TB. Here, we reveal the function and structure of the mycobacterial protein Eis responsible for resistance to kanamycin in a significant fraction of kanamycin-resistant Mycobacterium tuberculosis clinical isolates. We demonstrate that Eis has an unprecedented ability to acetylate multiple amines of many aminoglycosides. Structural and mutagenesis studies of Eis indicate that its acetylation mechanism is enabled by a complex tripartite fold that includes two general control non-derepressible 5 (GCN5)-related N-acetyltransferase regions. An intricate negatively charged substrate-binding pocket of Eis is a potential target of new antitubercular drugs expected to overcome aminoglycoside resistance.


    Organizational Affiliation

    Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Enhanced intracellular survival protein
A
428Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)Mutation(s): 0 
Gene Names: eis
EC: 2.3.1.-
Find proteins for P9WFK7 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Go to UniProtKB:  P9WFK7
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACM
Query on ACM

Download SDF File 
Download CCD File 
A
ACETAMIDE
C2 H5 N O
DLFVBJFMPXGRIB-UHFFFAOYSA-N
 Ligand Interaction
COA
Query on COA

Download SDF File 
Download CCD File 
A
COENZYME A
C21 H36 N7 O16 P3 S
RGJOEKWQDUBAIZ-IBOSZNHHSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.195 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 174.935α = 90.00
b = 174.935β = 90.00
c = 124.686γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data collection
PHASERphasing
HKL-2000data scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-06-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance