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(-) Description

Title :  CRYSTAL STRUCTURE OF THE CHANNEL-FORMING DOMAIN OF COLICIN E1
 
Authors :  P. Elkins, A Bunker, W. A. Cramer, C. V. Stauffacher
Date :  01 Sep 06  (Deposition) - 26 Sep 06  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.50
Chains :  Asym./Biol. Unit :  A
Keywords :  Protein-Membrane Interactions, Toxin-Membrane Interactions, Toxin Structure, Voltage-Gated Channel, Colicin, Membrane Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  P. Elkins, A. Bunker, W. A. Cramer, C. V. Stauffacher
A Mechanism For Toxin Insertion Into Membranes Is Suggested By The Crystal Structure Of The Channel-Forming Domain Of Colicin E1
Structure V. 5 443 1997
PubMed-ID: 9083117  |  Reference-DOI: 10.1016/S0969-2126(97)00200-1
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - COLICIN-E1
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PSKHY
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Fragment: C-TERMINAL DOMAIN
    Gene: CEA
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
    Strain: DM1187

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 2I88)

(-) Sites  (0, 0)

(no "Site" information available for 2I88)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2I88)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2I88)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2I88)

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CHANNEL_COLICINPS00276 Channel forming colicins signature.CEA1_ECOLX457-468  1A:457-468

(-) Exons   (0, 0)

(no "Exon" information available for 2I88)

(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it) 
Chain A from PDB  Type:PROTEIN  Length:178
 aligned with CEA1_ECOLX | P02978 from UniProtKB/Swiss-Prot  Length:522

    Alignment length:178
                                   354       364       374       384       394       404       414       424       434       444       454       464       474       484       494       504       514        
           CEA1_ECOLX   345 IKDAVDATVSFYQTLTEKYGEKYSKMAQELADKSKGKKIGNVNEALAAFEKYKDVLNKKFSKADRDAIFNALASVKYDDWAKHLDQFAKYLKITGHVSFGYDVVSDILKIKDTGDWKPLFLTLEKKAADAGVSYVVALLFSLLAGTTLGIWGIAIVTGILCSYIDKNKLNTINEVLGI 522
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..........hhhhhhhhhhhhh.hhhhhhhhhhhhh..hhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhh...hhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------CHANNEL_COLI------------------------------------------------------ PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2i88 A 345 IKDAVDATVSFYQTLTEKYGEKYSKMAQELADKSKGKKIGNVNEALAAFEKYKDVLNKKFSKADRDAIFNALASVKYDDWAKHLDQFAKYLKITGHVSFGYDVVSDILKIKDTGDWKPLFLTLEKKAADAGVSYVVALLFSLLAGTTLGIWGIAIVTGILCSYIDKNKLNTINEVLGI 522
                                   354       364       374       384       394       404       414       424       434       444       454       464       474       484       494       504       514
   Legend:   → Mismatch (orange background)
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  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (0, 0)

(no "SCOP Domain" information available for 2I88)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2I88)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2I88)

(-) Gene Ontology  (6, 6)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (CEA1_ECOLX | P02978)
biological process
    GO:0019835    cytolysis    The rupture of cell membranes and the loss of cytoplasm.
    GO:0050829    defense response to Gram-negative bacterium    Reactions triggered in response to the presence of a Gram-negative bacterium that act to protect the cell or organism.
    GO:0042742    defense response to bacterium    Reactions triggered in response to the presence of a bacterium that act to protect the cell or organism.
cellular component
    GO:0016021    integral component of membrane    The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

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(-) Related Entries Specified in the PDB File

1a87 CRYSTAL STRUCTURE OF A COLICIN N FRAGMENT SUGGESTS A MODEL FOR TOXICITY.
1cii CRYSTAL STRUCTURE OF COLICIN IA.
1col REFINED STRUCTURE OF THE PORE-FORMING DOMAIN OF COLICIN A AT 2.4 ANGSTROMS RESOLUTION
1ujw THE STRUCTURE OF BTUB WITH BOUND COLICIN E3 R-DOMAIN IMPLIES A TRANSLOCON