2I88 Membrane Protein date Sep 01, 2006
title Crystal Structure Of The Channel-Forming Domain Of Colicin E
authors P.Elkins, A.Bunker, W.A.Cramer, C.V.Stauffacher
compound source
Molecule: Colicin-E1
Chain: A
Fragment: C-Terminal Domain
Engineered: Yes
Organism_scientific: Escherichia Coli
Organism_taxid: 562
Strain: Dm1187
Gene: Cea
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pskhy
symmetry Space Group: I 4
R_factor 0.172 R_Free 0.284
length a length b length c angle alpha angle beta angle gamma
87.460 87.460 59.100 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.50 Å

Primary referenceA mechanism for toxin insertion into membranes is suggested by the crystal structure of the channel-forming domain of colicin E1., Elkins P, Bunker A, Cramer WA, Stauffacher CV, Structure. 1997 Mar 15;5(3):443-58. PMID:9083117
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (32 Kb) [Save to disk]
  • Biological Unit Coordinates (2i88.pdb1.gz) 29 Kb
  • CSU: Contacts of Structural Units for 2I88
  • Likely Quarternary Molecular Structure file(s) for 2I88
  • Structure Factors (71 Kb)
  • Retrieve 2I88 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2I88 from S2C, [Save to disk]
  • Re-refined 2i88 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 2I88 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 2I88
  • 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 2I88, from MSDmotif at EBI
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2i88] [2i88_A]
  • SWISS-PROT database: [P02978]
  • Belongs to the channel-forming colicin (colicin) family according to TCDB.
  • Domain organization of [CEA1_ECOLX] by SWISSPFAM
  • Other resources with information on 2I88
  • Community annotation for 2I88 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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