3E6B Transcription Regulation date Aug 15, 2008
title Ocpa Complexed Cprk (C200s)
authors C.Levy
compound source
Molecule: Cyclic Nucleotide-Binding Protein
Chain: A, B
Synonym: Cprk
Engineered: Yes
Mutation: Yes
Organism_scientific: Desulfitobacterium Hafniense
Organism_taxid: 272564
Strain: Dcb-2
Gene: Dhaf_0678
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Ptrc99
symmetry Space Group: P 21 21 21
R_factor 0.189 R_Free 0.232
length a length b length c angle alpha angle beta angle gamma
42.500 86.510 125.230 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.01 Å
ligand 3C4 enzyme
A, B

Primary referenceMolecular basis of halorespiration control by CprK, a CRP-FNR type transcriptional regulator., Levy C, Pike K, Heyes DJ, Joyce MG, Gabor K, Smidt H, van der Oost J, Leys D, Mol Microbiol. 2008 Aug 20. PMID:18717788
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (78 Kb) [Save to disk]
  • Biological Unit Coordinates (3e6b.pdb1.gz) 72 Kb
  • LPC: Ligand-Protein Contacts for 3E6B
  • CSU: Contacts of Structural Units for 3E6B
  • Likely Quarternary Molecular Structure file(s) for 3E6B
  • Structure Factors (190 Kb)
  • Retrieve 3E6B in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 3E6B from S2C, [Save to disk]
  • Re-refined 3e6b structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 3E6B 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 3E6B
  • 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 3E6B, from MSDmotif at EBI
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [3e6b_B] [3e6b] [3e6b_A]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Domains found in 3E6B: [HTH_CRP] [cNMP ] by SMART
  • Other resources with information on 3E6B
  • Community annotation for 3E6B 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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