1OG3

Crystal structure of the eukaryotic mono-ADP-ribosyltransferase ART2.2 mutant E189I in complex with NAD


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Substrate Binding and Catalysis of Ecto-Adp-Ribosyltransferase 2.2 From Rat

Ritter, H.Koch-Nolte, F.Marquez, V.E.Schulz, G.E.

(2003) Biochemistry 42: 10155

  • DOI: 10.1021/bi034625w
  • Primary Citation of Related Structures:  1OG1, 1OG4

  • PubMed Abstract: 
  • The structures of beta-methylenethiazole-4-carboxamide adenine dinucleotide (TAD), NAD(+), and NADH as bound to ecto-ADP-ribosyltransferase 2.2 from rat and to its mutants E189I and E189A, respectively, have been established. The positions and confor ...

    The structures of beta-methylenethiazole-4-carboxamide adenine dinucleotide (TAD), NAD(+), and NADH as bound to ecto-ADP-ribosyltransferase 2.2 from rat and to its mutants E189I and E189A, respectively, have been established. The positions and conformations of NAD(+) and its analogues agree in general with those in other ADP-ribosyltransferases. The kinetic constants for NAD(+) hydrolysis were determined by RP-HPLC. The specific activity amounts to 26 units/mg, which is 6000-fold higher than a previously reported rate and 500-fold higher than the hydrolysis rates of other ADP-ribosyltransferases, confirming that hydrolysis is the major function of this enzyme. On the basis of structures and mutant activities, a catalytic mechanism is proposed. The known auto-ADP-ribosylation of the enzyme at the suggested position R184 is supported by one of the crystal structures where the nucleophile position is occupied by an Neta atom of this arginine which in turn is backed up by the base E159.


    Organizational Affiliation

    Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität, Albertstrasse 21, Freiburg im Breisgau 79104, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
T-CELL ECTO-ADP-RIBOSYLTRANSFERASE 2
A
226Rattus norvegicusGene Names: Art2b (Rt6-b)
EC: 2.4.2.31, 3.2.2.5
Find proteins for P20974 (Rattus norvegicus)
Go to UniProtKB:  P20974
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAD
Query on NAD

Download SDF File 
Download CCD File 
A
NICOTINAMIDE-ADENINE-DINUCLEOTIDE
C21 H27 N7 O14 P2
BAWFJGJZGIEFAR-NNYOXOHSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.200 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 81.707α = 90.00
b = 81.707β = 90.00
c = 77.810γ = 120.00
Software Package:
Software NamePurpose
MOLREPphasing
SCALEPACKdata scaling
DENZOdata reduction
CNSrefinement
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-08-28
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-07-12
    Type: Refinement description