7CEI	Immune System	date	Sep 17, 1998
title	The Endonuclease Domain Of Colicin E7 In Complex With Its In Im7 Protein
authors	T.P.Ko, C.C.Liao, W.Y.Ku, K.F.Chak, H.S.Yuan
compound		source
Molecule: Protein (Colicin E7 Immunity Protein) Chain: A Synonym: Im7 Engineered: Yes		Organism_scientific: Escherichia Coli Str. K12 Substr. Organism_taxid: 316407 Strain: W3110 Gene: Ceie7 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Sg13009 Expression_system_vector_type: Plasmid Expression_system_vector: Phbh Expression_system_gene: Ceie7
Molecule: Protein (Colicin E7 Immunity Protein) Chain: B Fragment: Endonuclease Domain Synonym: Cole7 Dnase Domain		Organism_scientific: Escherichia Coli Str. K12 Substr. Organism_taxid: 316407 Strain: W3110 Plasmid: Pcole7
symmetry	Space Group: I 2 2 2	R_factor 0.203 R_Free 0.270
crystal cell	length a length b length c angle alpha angle beta angle gamma 65.440 76.020 119.990 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	ZN	enzyme
related structures	by homologous chain: 1GXG, 1UJZ
Gene Ontology	Chain Function Process Component A B
Primary reference	The crystal structure of the DNase domain of colicin E7 in complex with its inhibitor Im7 protein., Ko TP, Liao CC, Ku WY, Chak KF, Yuan HS, Structure Fold Des 1999 Jan 15;7(1):91-102. PMID:10368275

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (43 Kb) [Save to disk] Biological Unit Coordinates (7cei.pdb1.gz) 38 Kb LPC: Ligand-Protein Contacts for 7CEI CSU: Contacts of Structural Units for 7CEI Likely Quarternary Molecular Structure file(s) for 7CEI Retrieve 7CEI in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 7CEI from S2C, [Save to disk]

View 7CEI 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 7CEI

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 7CEI, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d7ceia_, region A [Jmol] [rasmolscript] [script source]     - Domain d7ceib_, region B [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [7cei_B] [7cei_A] [7cei] SWISS-PROT database: [Q47112] [Q03708] Belongs to the colicin immunity protein (colip) functional family according to TCDB. Domain organization of [CEA7_ECOLX] [IMM7_ECOLX] by SWISSPFAM Domain found in 7CEI: [HNHc ] by SMART

Other resources with information on 7CEI

Community annotation for 7CEI at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

Movements, Movies and Images

Domain movements in 7CEI from the Database of Macromolecular Movements. Images from IMB Jena Image Library of Biological Macromolecules.

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