1K4M

Crystal structure of E.coli nicotinic acid mononucleotide adenylyltransferase complexed to deamido-NAD


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.206 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structures of E. coli nicotinate mononucleotide adenylyltransferase and its complex with deamido-NAD.

Zhang, H.Zhou, T.Kurnasov, O.Cheek, S.Grishin, N.V.Osterman, A.

(2002) Structure 10: 69-79

  • DOI: 10.1016/s0969-2126(01)00693-1
  • Primary Citation of Related Structures:  
    1K4M, 1K4K

  • PubMed Abstract: 
  • Nicotinamide/Nicotinate mononucleotide (NMN/NaMN) adenylyltransferase is an indispensable enzyme in both de novo biosynthesis and salvage of NAD+ and NADP+. In prokaryotes, it is absolutely required for cell survival, thus representing an attractive target for the development of new broad-spectrum antibacteria inhibitors ...

    Nicotinamide/Nicotinate mononucleotide (NMN/NaMN) adenylyltransferase is an indispensable enzyme in both de novo biosynthesis and salvage of NAD+ and NADP+. In prokaryotes, it is absolutely required for cell survival, thus representing an attractive target for the development of new broad-spectrum antibacteria inhibitors. The crystal structures of E. coli NaMN adenylyltransferase (NMNAT) and its complex with deamido-NAD (NaAD) revealed that ligand binding causes large conformational changes in several loop regions around the active site. The enzyme specifically recognizes the deamidated pyridine nucleotide through interactions between nicotinate carboxylate with several protein main chain amides and a positive helix dipole. Comparison of E. coli NMNAT with those from archaeal organisms revealed extensive differences in the active site architecture, enzyme-ligand interaction mode, and bound dinucleotide conformations. The bacterial NaMN adenylyltransferase structures described here provide a foundation for structure-based design of specific inhibitors that may have therapeutic potential.


    Organizational Affiliation

    Department of Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA. zhang@chop.swmed.edu



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
NaMN adenylyltransferaseA, B, C213Escherichia coliMutation(s): 0 
Gene Names: nadD
EC: 2.7.7.18
UniProt
Find proteins for P0A752 (Escherichia coli (strain K12))
Explore P0A752 
Go to UniProtKB:  P0A752
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAD
Query on NAD

Download Ideal Coordinates CCD File 
D [auth A], F [auth B], H [auth C]NICOTINAMIDE-ADENINE-DINUCLEOTIDE
C21 H27 N7 O14 P2
BAWFJGJZGIEFAR-NNYOXOHSSA-N
 Ligand Interaction
CIT
Query on CIT

Download Ideal Coordinates CCD File 
E [auth A], G [auth B], I [auth C]CITRIC ACID
C6 H8 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.206 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 114.83α = 90
b = 113.93β = 90
c = 115.67γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-10-08
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance