2QQA	Transcription Regulator	date	Jul 26, 2007
title	Crystal Structure Of Dtxr(E9a C102d) Complexed With Nickel(I
authors	J.A.D'Aquino, J.R.Lattimer, A.Denninger, K.E.D'Aquino, D.Ringe
compound		source
Molecule: Diphtheria Toxin Repressor Chain: A Synonym: Iron-Dependent Diphtheria Tox Regulatory Element, Regulatory Factor; Engineered: Yes Mutation: Yes		Organism_scientific: Corynebacterium Diphtheriae Organism_taxid: 1717 Gene: Dtxr Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl-21(De3)
symmetry	Space Group: P 31 2 1	R_factor 0.194 R_Free 0.256
crystal cell	length a length b length c angle alpha angle beta angle gamma 61.755 61.755 104.557 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.10 Å
ligand	NI, PO4	enzyme
Gene Ontology	Chain Function Process Component A
Primary reference	Role of the N-Terminal Helix in the Metal Ion-Induced Activation of the Diphtheria Toxin Repressor DtxR., D'Aquino JA, Lattimer JR, Denninger A, D'Aquino KE, Ringe D, Biochemistry. 2007 Oct 23;46(42):11761-11770. Epub 2007 Sep 29. PMID:17902703

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (42 Kb) [Save to disk] Biological Unit Coordinates (2qqa.pdb1.gz) 71 Kb LPC: Ligand-Protein Contacts for 2QQA CSU: Contacts of Structural Units for 2QQA Likely Quarternary Molecular Structure file(s) for 2QQA Structure Factors (100 Kb) Retrieve 2QQA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2QQA from S2C, [Save to disk] Re-refined 2qqa structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2QQA 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 2QQA

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 2QQA, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2qqa_A] [2qqa] SWISS-PROT database: [P33120] Domain organization of [DTXR_CORDI] by SWISSPFAM Domains found in 2QQA: [FeoA] [HTH_DTXR ] by SMART

Other resources with information on 2QQA

Community annotation for 2QQA at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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