1TAE

Structural rearrangement accompanying NAD+ synthesis within a bacterial DNA ligase crystal


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 

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This is version 1.2 of the entry. See complete history


Literature

Structural rearrangement accompanying NAD+ synthesis within a bacterial DNA ligase crystal.

Gajiwala, K.S.Pinko, C.

(2004) Structure 12: 1449-1459

  • DOI: 10.1016/j.str.2004.05.017
  • Primary Citation of Related Structures:  
    1TA8, 1TAE

  • PubMed Abstract: 
  • DNA ligase is an enzyme important for DNA repair and replication. Eukaryotic genomes encode ligases requiring ATP as the cofactor; bacterial genomes encode NAD(+)-dependent ligase. This difference in substrate specificities and the essentiality of NAD(+)-dependent ligase for bacterial survival make NAD(+)-dependent ligase a good target for designing highly specific anti-infectives ...

    DNA ligase is an enzyme important for DNA repair and replication. Eukaryotic genomes encode ligases requiring ATP as the cofactor; bacterial genomes encode NAD(+)-dependent ligase. This difference in substrate specificities and the essentiality of NAD(+)-dependent ligase for bacterial survival make NAD(+)-dependent ligase a good target for designing highly specific anti-infectives. Any such structure-guided effort would require the knowledge of the precise mechanism of NAD+ recognition by the enzyme. We report the principles of NAD+ recognition by presenting the synthesis of NAD+ from nicotinamide mononucleotide (NMN) and AMP, catalyzed by Enterococcus faecalis ligase within the crystal lattice. Unprecedented conformational change, required to reorient the two subdomains of the protein for the condensation to occur and to recognize NAD+, is captured in two structures obtained using the same protein crystal. Structural data and sequence analysis presented here confirms and extends prior functional studies of the ligase adenylation reaction.


    Related Citations: 
    • Structure of the adenylation domain of an NAD dependent DNA ligase
      Singleton, M.R., Hakansson, K., Timson, D.J., Wigley, D.B.
      (1999) Structure 7: 35
    • Crystal structure of NAD dependent DNA ligase: modular architecture and functional implications.
      Lee, J.Y., Chang, C., Song, H.K., Moon, J., Yang, J.K., K Kim, H., Kwon, S.T., Suh, S.W.
      (2000) EMBO J 19: 1119

    Organizational Affiliation

    Quorex Pharmaceuticals, 1890 Rutherford Road, Suite 200, Carlsbad, California 92008, USA. ketang@quorex.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA ligase, NAD-dependentA, B, C, D332Enterococcus faecalis V583Mutation(s): 0 
Gene Names: ligAEF_0722
EC: 6.5.1.2
UniProt
Find proteins for Q837V6 (Enterococcus faecalis (strain ATCC 700802 / V583))
Explore Q837V6 
Go to UniProtKB:  Q837V6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ837V6
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAD
Query on NAD

Download Ideal Coordinates CCD File 
HA [auth D],
K [auth A],
T [auth B],
Z [auth C]
NICOTINAMIDE-ADENINE-DINUCLEOTIDE
C21 H27 N7 O14 P2
BAWFJGJZGIEFAR-NNYOXOHSSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
AA [auth D],
BA [auth D],
CA [auth D],
DA [auth D],
E [auth A],
AA [auth D],
BA [auth D],
CA [auth D],
DA [auth D],
E [auth A],
EA [auth D],
F [auth A],
FA [auth D],
G [auth A],
H [auth A],
I [auth A],
J [auth A],
L [auth B],
M [auth B],
N [auth B],
O [auth B],
P [auth B],
Q [auth B],
R [auth B],
U [auth C],
V [auth C],
W [auth C],
X [auth C],
Y [auth C]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
NA
Query on NA

Download Ideal Coordinates CCD File 
GA [auth D],
S [auth B]
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.296α = 90
b = 135.179β = 102.29
c = 115.797γ = 90
Software Package:
Software NamePurpose
CNXrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNXphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-11-23
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance