1GHE

CRYSTAL STRUCTURE OF TABTOXIN RESISTANCE PROTEIN COMPLEXED WITH AN ACYL COENZYME A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal Structure of Tabtoxin Resistance Protein Complexed with Acetyl Coenzyme A Reveals the Mechanism for beta-Lactam Acetylation

He, H.Ding, Y.Bartlam, M.Sun, F.Le, Y.Qin, X.Tang, H.Zhang, R.Joachimiak, A.Liu, Y.Zhao, N.Rao, Z.

(2003) J.Mol.Biol. 325: 1019-1030

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Tabtoxin resistance protein (TTR) is an enzyme that renders tabtoxin-producing pathogens, such as Pseudomonas syringae, tolerant to their own phytotoxins. Here, we report the crystal structure of TTR complexed with its natural cofactor, acetyl coenzy ...

    Tabtoxin resistance protein (TTR) is an enzyme that renders tabtoxin-producing pathogens, such as Pseudomonas syringae, tolerant to their own phytotoxins. Here, we report the crystal structure of TTR complexed with its natural cofactor, acetyl coenzyme A (AcCoA), to 1.55A resolution. The binary complex forms a characteristic "V" shape for substrate binding and contains the four motifs conserved in the GCN5-related N-acetyltransferase (GNAT) superfamily, which also includes the histone acetyltransferases (HATs). A single-step mechanism is proposed to explain the function of three conserved residues, Glu92, Asp130 and Tyr141, in catalyzing the acetyl group transfer to its substrate. We also report that TTR possesses HAT activity and suggest an evolutionary relationship between TTR and other GNAT members.


    Organizational Affiliation

    Laboratory of Structural Biology, and MOE Laboratory of Protein Science, School of Life Sciences and Engineering, Tsinghua University, 100084, Beijing, People's Republic of China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ACETYLTRANSFERASE
A, B
177Pseudomonas amygdali pv. tabaciMutation(s): 0 
Gene Names: ttr
EC: 2.3.1.-
Find proteins for P16966 (Pseudomonas amygdali pv. tabaci)
Go to UniProtKB:  P16966
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACO
Query on ACO

Download SDF File 
Download CCD File 
A, B
ACETYL COENZYME *A
C23 H38 N7 O17 P3 S
ZSLZBFCDCINBPY-ZSJPKINUSA-N
 Ligand Interaction
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: 1.55 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.209 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 101.760α = 90.00
b = 45.700β = 105.79
c = 84.240γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
HKL-2000data scaling
Omodel building
HKL-2000data reduction
DENZOdata reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-01-14
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description