3IR7	Oxidoreductase	date	Aug 21, 2009
title	Crystal Structure Of Narghi Mutant Narg-R94s
authors	M.G.Bertero, R.A.Rothery, J.H.Weiner, N.C.J.Strynadka
compound		source
Molecule: Respiratory Nitrate Reductase 1 Alpha Chain Chain: A Fragment: Narg Synonym: Nitrate Reductase A Subunit Alpha, Quinol-Nitrate Oxidoreductase Subunit Alpha; Ec: 1.7.99.4 Engineered: Yes Mutation: Yes		Organism_scientific: Escherichia Coli K-12 Organism_taxid: 83333 Strain: K12 Gene: Narg, Bisd, Narc, B1224, Jw1215 Expression_system: Escherichia Coli Expression_system_taxid: 562
Molecule: Respiratory Nitrate Reductase 1 Beta Chain Chain: B Fragment: Narh Synonym: Nitrate Reductase A Subunit Beta, Quinol-Nitrate Oxidoreductase Subunit Beta; Ec: 1.7.99.4 Engineered: Yes		Organism_scientific: Escherichia Coli K-12 Organism_taxid: 83333 Strain: K12 Gene: Narh, B1225, Jw1216 Expression_system: Escherichia Coli Expression_system_taxid: 562
Molecule: Respiratory Nitrate Reductase 1 Gamma Chain Chain: C Fragment: Nari Synonym: Nitrate Reductase A Subunit Gamma, Quinol-Nitrate Oxidoreductase Subunit Gamma, Cytochrome B-Nr; Ec: 1.7.99.4 Engineered: Yes		Organism_scientific: Escherichia Coli K-12 Organism_taxid: 83333 Strain: K12 Gene: Nari, Chli, B1227, Jw1218 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: C 2 2 21	R_factor 0.202 R_Free 0.243
crystal cell	length a length b length c angle alpha angle beta angle gamma 153.851 241.147 139.966 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	6MO, AGA, F3S, FME, HEM, MD1, SF4	enzyme	Oxidoreductase E.C.1.7.99.4 BRENDA
Gene Ontology	Chain Function Process Component A electron transfer activity B electron transfer activity C
Primary reference	Protein crystallography reveals a role for the FS0 cluster of Escherichia coli nitrate reductase A (NarGHI) in enzyme maturation., Rothery RA, Bertero MG, Spreter T, Bouromand N, Strynadka NC, Weiner JH, J Biol Chem. 2010 Mar 19;285(12):8801-7. Epub 2010 Jan 6. PMID:20053990

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (334 Kb) [Save to disk] Biological Unit Coordinates (3ir7.pdb1.gz) 319 Kb Biological Unit Coordinates (3ir7.pdb2.gz) 319 Kb Biological Unit Coordinates (3ir7.pdb3.gz) 318 Kb Biological Unit Coordinates (3ir7.pdb4.gz) 629 Kb Biological Unit Coordinates (3ir7.pdb5.gz) 630 Kb Biological Unit Coordinates (3ir7.pdb6.gz) 629 Kb LPC: Ligand-Protein Contacts for 3IR7 CSU: Contacts of Structural Units for 3IR7 Structure Factors (790 Kb) Retrieve 3IR7 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3IR7 from S2C, [Save to disk] Re-refined 3ir7 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3IR7 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 3IR7

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 3IR7, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3ir7_A] [3ir7_C] [3ir7] [3ir7_B] SWISS-PROT database: [P09152] [P11349] [P11350] Belongs to the prokaryotic molybdopterin-containing oxidoreductase (pmo) family according to TCDB. Domain organization of [NARG_ECOLI] [NARH_ECOLI] [NARI_ECOLI] by SWISSPFAM Domain found in 3IR7: [Molybdop_Fe4S4 ] by SMART

Other resources with information on 3IR7

Community annotation for 3IR7 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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