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

  • DOI: 10.1016/s0022-2836(02)01284-6
  • Primary Citation of Related Structures:  
    1J4J, 1GHE

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ACETYLTRANSFERASEA, B177Pseudomonas amygdali pv. tabaciMutation(s): 5 
Gene Names: ttr
EC: 2.3.1
Find proteins for P16966 (Pseudomonas amygdali pv. tabaci)
Explore P16966 
Go to UniProtKB:  P16966
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACO
Query on ACO

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,BL-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 = 101.76α = 90
b = 45.7β = 105.79
c = 84.24γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
Omodel building
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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