1XNG	Ligase	date	Oct 05, 2004
title	Crystal Structure Of Nh3-Dependent Nad+ Synthetase From Heli Pylori
authors	G.B.Kang, Y.S.Kim, Y.J.Im, S.H.Rho, J.H.Lee, S.H.Eom
compound		source
Molecule: Nh(3)-Dependent Nad(+) Synthetase Chain: A, B Ec: 6.3.1.5 Engineered: Yes		Organism_scientific: Helicobacter Pylori Organism_taxid: 210 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet21a
symmetry	Space Group: P 31	R_factor 0.229 R_Free 0.257
crystal cell	length a length b length c angle alpha angle beta angle gamma 63.403 63.403 125.688 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	1.70 Å
ligand	ATP, DND, MG	enzyme	Ligase E.C.6.3.1.5 BRENDA
related structures	by homologous chain: 1XNH
Gene Ontology	Chain Function Process Component A, B
Primary reference	Crystal structure of NH3-dependent NAD+ synthetase from Helicobacter pylori., Kang GB, Kim YS, Im YJ, Rho SH, Lee JH, Eom SH, Proteins 2005 Mar 1;58(4):985-8. PMID:15645437

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (94 Kb) [Save to disk] Biological Unit Coordinates (1xng.pdb1.gz) 88 Kb LPC: Ligand-Protein Contacts for 1XNG CSU: Contacts of Structural Units for 1XNG Likely Quarternary Molecular Structure file(s) for 1XNG Structure Factors (483 Kb) Retrieve 1XNG in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1XNG from S2C, [Save to disk] Re-refined 1xng structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1XNG in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.

Visual 3D analysis of 1XNG

Ramachandran plot from PDBSum

Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1XNG, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1xng_B] [1xng] [1xng_A] SWISS-PROT database: [O25096] Domain organization of [NADE_HELPY] by SWISSPFAM

Other resources with information on 1XNG

Community annotation for 1XNG at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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