1M4G

Aminoglycoside 2'-N-acetyltransferase from Mycobacterium tuberculosis-Complex with Coenzyme A and Ribostamycin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.165 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Aminoglycoside 2'-N-acetyltransferase from Mycobacterium tuberculosis in complex with coenzyme A and aminoglycoside substrates.

Vetting, M.W.Hegde, S.S.Javid-Majd, F.Blanchard, J.S.Roderick, S.L.

(2002) Nat.Struct.Mol.Biol. 9: 653-658

  • DOI: 10.1038/nsb830
  • Primary Citation of Related Structures:  1M44, 1M4D, 1M4I

  • PubMed Abstract: 
  • AAC(2')-Ic catalyzes the coenzyme A (CoA)-dependent acetylation of the 2' hydroxyl or amino group of a broad spectrum of aminoglycosides. The crystal structure of the AAC(2')-Ic from Mycobacterium tuberculosis has been determined in the apo enzyme fo ...

    AAC(2')-Ic catalyzes the coenzyme A (CoA)-dependent acetylation of the 2' hydroxyl or amino group of a broad spectrum of aminoglycosides. The crystal structure of the AAC(2')-Ic from Mycobacterium tuberculosis has been determined in the apo enzyme form and in ternary complexes with CoA and either tobramycin, kanamycin A or ribostamycin, representing the first structures of an aminoglycoside acetyltransferase bound to a drug. The overall fold of AAC(2')-Ic places it in the GCN5-related N-acetyltransferase (GNAT) superfamily. Although the physiological function of AAC(2')-Ic is uncertain, a structural analysis of these high-affinity aminoglycoside complexes suggests that the enzyme may acetylate a key biosynthetic intermediate of mycothiol, the major reducing agent in mycobacteria, and participate in the regulation of cellular redox potential.


    Related Citations: 
    • Overexpression and Mechanistic Analysis of Chromosomally Encoded Aminoglycoside 2'-N-Acetyltransferase (AAC(2')-Ic) from Mycobacterium tuberculosis
      Hegde, S.S.,Javid-Majd, F.,Blanchard, J.S.
      (2001) J.Biol.Chem. 49: 45876


    Organizational Affiliation

    Department of Biochemistry, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, New York 10461, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Aminoglycoside 2'-N-acetyltransferase
A, B
181Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)Gene Names: aac
EC: 2.3.1.-
Find proteins for P9WQG9 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Go to UniProtKB:  P9WQG9
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
COA
Query on COA

Download SDF File 
Download CCD File 
A, B
COENZYME A
C21 H36 N7 O16 P3 S
RGJOEKWQDUBAIZ-IBOSZNHHSA-N
 Ligand Interaction
PAP
Query on PAP

Download SDF File 
Download CCD File 
B
3'-PHOSPHATE-ADENOSINE-5'-DIPHOSPHATE
C10 H16 N5 O13 P3
GBBWIZKLHXYJOA-KQYNXXCUSA-N
 Ligand Interaction
RIO
Query on RIO

Download SDF File 
Download CCD File 
A, B
RIBOSTAMYCIN
5-AMINO-2-AMINOMETHYL-6-[4,6-DIAMINO-2-(3,4-DIHYDROXY-5-HYDROXYMETHYL-TETRAHYDRO-FURAN-2-YLOXY)-3-HYDROXY-CYCLOHEXYLOXY]-TETRAHYDRO-PYRAN-3,4-DIOL; (1R,2R,3S,4R,6S)-4,6-diamino-3-hydroxy-2-(beta-D-ribofuranosyloxy)cyclohexyl 2,6-diamino-2,6-dideoxy-alpha-D-glucopyranoside
C17 H34 N4 O10
NSKGQURZWSPSBC-VVPCINPTSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.165 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 48.700α = 90.00
b = 86.400β = 90.00
c = 98.400γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
SCALEPACKdata scaling
DENZOdata reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-08-28
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Source and taxonomy, Version format compliance