1GY0

crystal structure of the eucaryotic mono-ADP-ribosyltransferase ART2.2; CRYSTAL FORM C (P3121)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.08 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.209 

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This is version 1.2 of the entry. See complete history. 


Literature

Structure of the Ecto-Adp-Ribosyl Transferase Art2.2 From Rat

Mueller-Dieckmann, C., Ritter, H., Haag, F., Koch-Nolte, F., Schulz, G.E.

(2002) J Mol Biol 322: 687

  • DOI: 10.1016/s0022-2836(02)00818-5
  • Primary Citation of Related Structures:  
    1GXY, 1GXZ, 1GY0

  • PubMed Abstract: 

    • The mammalian extracellular ADP-ribosyl transferases ART1 through ART5 are sequence-related to each other. Among them ART2 is involved in immuno regulation. The variant ART2.2 was expressed in the periplasm of Escherichia coli and crystallized. Its structure was determined by X-ray diffraction at 1 ...

    The mammalian extracellular ADP-ribosyl transferases ART1 through ART5 are sequence-related to each other. Among them ART2 is involved in immuno regulation. The variant ART2.2 was expressed in the periplasm of Escherichia coli and crystallized. Its structure was determined by X-ray diffraction at 1.7A resolution in one crystal form and at slightly lower resolutions in two others. The active center was indicated by a ligated nicotinamide analogue, which also revealed a small induced-fit. The centerpiece of the chainfold of ART2.2 agrees with those of all bacterial ADP-ribosyl transferases. This correspondence and the nicotinamide position were used to model the binding structure of the whole substrate NAD(+) at ART2.2. Two of the bacterial enzymes are structurally more closely related to ART2.2 while the others are more closely related to the eukaryotic poly(ADP-ribosyl)polymerase. This splits the ADP-ribosyl transferases into two distinct subfamilies. A special feature of ART2.2 is its long N-terminal extension and two disulfide bridges that are far away from the active center. They stabilize the protein against denaturation and presumably also against shearing forces parallel with the membrane where ART2.2 is anchored.

    Organizational Affiliation: 

    Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität, Freiburg 79104, Germany.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
T-CELL ECTO-ADP-RIBOSYLTRANSFERASE 2A226Rattus norvegicusMutation(s): 0 
Gene Names: Art2b, Rt6-b
EC: 2.4.2.31 (PDB Primary Data), 3.2.2.5 (UniProt)
UniProt
Find proteins for P20974 (Rattus norvegicus)
Explore P20974 
Go to UniProtKB:  P20974
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP20974
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.08 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.209 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.466α = 90
b = 81.466β = 90
c = 77.536γ = 120
Software Package:
Software NamePurpose
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-09-26
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance