2KEJ Transcription Dna date Jan 30, 2009
title Solution Structure Of A Dimer Of Lac Repressor Dna-Binding D Complexed To Its Natural Operator O2
authors J.Romanuka, G.Folkers, N.Biris, E.Tishchenko, H.Wienk, R.Kaptein,
compound source
Molecule: Lactose Operon Repressor
Chain: A, B
Fragment: Unp Residues 1-62
Engineered: Yes
Mutation: Yes
 Organism_scientific: Escherichia Coli
Organism_taxid: 83333
Strain: K-12
Gene: Laci, B0345, Jw0336
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Dh9

Molecule: Dna (5'- D(Gpapapaptpgptpgpapgpcpgpapgptpapapcpap G)-3');
Chain: C
Engineered: Yes
Synthetic: Yes

Molecule: Dna (5'- D(Pcpgpgptptpgptptpapcptpcpgpcptpcpapcpa C)-3');
Chain: D
Engineered: Yes
Synthetic: Yes
methodSolution NMR
Gene
Ontology
ChainFunctionProcessComponent
A, B


Primary referenceSpecificity and affinity of Lac repressor for the auxiliary operators O2 and O3 are explained by the structures of their protein-DNA complexes., Romanuka J, Folkers GE, Biris N, Tishchenko E, Wienk H, Bonvin AM, Kaptein R, Boelens R, J Mol Biol. 2009 Jul 17;390(3):478-89. Epub 2009 May 18. PMID:19450607
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (1256 Kb) [Save to disk]
  • Biological Unit Coordinates (2kej.pdb1.gz) 62 Kb
  • CSU: Contacts of Structural Units for 2KEJ
  • Original NMR restraints for 2KEJ from PDB
  • Retrieve 2KEJ in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2KEJ from S2C, [Save to disk]
    • View 2KEJ 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 2KEJ
  • Ramachandran plot from PDBSum
    • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 2KEJ, from MSDmotif at EBI
    • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2kej_A] [2kej_D] [2kej_C] [2kej] [2kej_B]
  • SWISS-PROT database: [P03023]
  • Domain organization of [LACI_ECOLI] by SWISSPFAM
  • Domain found in 2KEJ: [HTH_LACI ] by SMART
    • Other resources with information on 2KEJ
  • Community annotation for 2KEJ at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
    • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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