2PZB

NAD+ Synthetase from Bacillus anthracis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.219 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural adaptation of an interacting non-native C-terminal helical extension revealed in the crystal structure of NAD(+) synthetase from Bacillus anthracis.

McDonald, H.M.Pruett, P.S.Deivanayagam, C.Protasevich, I.I.Carson, W.M.DeLucas, L.J.Brouillette, W.J.Brouillette, C.G.

(2007) Acta Crystallogr D Biol Crystallogr 63: 891-905

  • DOI: 10.1107/S0907444907029769
  • Primary Citation of Related Structures:  
    2PZ8, 2PZA, 2PZB

  • PubMed Abstract: 
  • The crystal structures of NH(3)-dependent NAD+ synthetase from Bacillus anthracis as the apoenzyme (1.9 A), in complex with the natural catalytic products AMP and pyrophosphate (2.4 A) and in complex with the substrate analog adenosine 5'-(alpha,beta-methylene)triphosphate (2 ...

    The crystal structures of NH(3)-dependent NAD+ synthetase from Bacillus anthracis as the apoenzyme (1.9 A), in complex with the natural catalytic products AMP and pyrophosphate (2.4 A) and in complex with the substrate analog adenosine 5'-(alpha,beta-methylene)triphosphate (2.0 A) have been determined. NAD+ synthetase catalyzes the last step in the biosynthesis of the vitally important cofactor NAD+. In comparison to other NAD+ synthetase crystal structures, the C-terminal His-tagged end of the apoenzyme adopts a novel helical conformation, causing significant compensatory changes in the region. The structural accommodations observed in B. anthracis NAD+ synthetase are remarkable in the absence of adverse affects on enzyme activity. They also illustrate a rare example of the influence of a non-native C-terminal His-tag extension on the structure of a native protein. In contrast to the apoenzyme, when AMP and pyrophosphate or adenosine 5'-(alpha,beta-methylene)triphosphate are bound, the C-terminus adopts a conformation that allows ATP binding and overall the structure then resembles other NAD+ synthetase structures. The structures of NAD+ synthetase complexes from B. anthracis are compared with published X-ray crystal structures of the enzyme from B. subtilis, Escherichia coli and Helicobacter pylori. These comparisons support the novel observation that P1 and P2 loop ordering is not a consequence of crystal contacts but rather a consequence of intrinsic intramolecular interactions within the ordered subunit.


    Organizational Affiliation

    Center for Biophysical Sciences and Engineering, University of Alabama at Birmingham, Birmingham, AL 35294-4440, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
NH(3)-dependent NAD(+) synthetaseA, B, C, D284Bacillus anthracisMutation(s): 0 
Gene Names: nadEBA_1998GBAA_1998BAS1855
EC: 6.3.1.5
UniProt
Find proteins for Q81RP3 (Bacillus anthracis)
Explore Q81RP3 
Go to UniProtKB:  Q81RP3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ81RP3
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.219 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 84.419α = 90
b = 84.553β = 90
c = 245.385γ = 90
Software Package:
Software NamePurpose
CNSrefinement
SERGUIdata collection
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-07-31
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.2: 2017-10-18
    Changes: Refinement description