1ZNV	Hydrolase Protein Binding	date	May 12, 2005
title	How A His-Metal Finger Endonuclease Cole7 Binds And Cleaves Transition Metal Ion Cofactor
authors	L.G.Doudeva, H.Huang, K.C.Hsia, Z.Shi, C.L.Li, Y.Shen, H.S.Yuan
compound		source
Molecule: Colicin E7 Immunity Protein Chain: A, C Synonym: Imme7, Microcin E7 Immunity Protein Engineered: Yes		Organism_scientific: Escherichia Coli Str. K12 Substr. Organism_taxid: 316407 Strain: W3110 Gene: Cei7 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: M15 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pqe70
Molecule: Colicin E7 Chain: B, D Fragment: Nuclease Domain Ec: 3.1.-.- Engineered: Yes Mutation: Yes		Organism_scientific: Escherichia Coli Str. K12 Substr. Organism_taxid: 316407 Strain: W3110 Gene: Cei7 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: M15 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pqe70
symmetry	Space Group: P 21 21 2	R_factor 0.188 R_Free 0.235
crystal cell	length a length b length c angle alpha angle beta angle gamma 119.021 62.882 74.769 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.00 Å
ligand	NI, PO4	enzyme	Hydrolase E.C.3.1 BRENDA
Gene Ontology	Chain Function Process Component A, C D, B
Primary reference	Crystal structural analysis and metal-dependent stability and activity studies of the ColE7 endonuclease domain in complex with DNA/Zn2+ or inhibitor/Ni2+., Doudeva LG, Huang H, Hsia KC, Shi Z, Li CL, Shen Y, Cheng YS, Yuan HS, Protein Sci. 2006 Feb;15(2):269-80. PMID:16434744

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (81 Kb) [Save to disk] Biological Unit Coordinates (1znv.pdb1.gz) 39 Kb Biological Unit Coordinates (1znv.pdb2.gz) 38 Kb LPC: Ligand-Protein Contacts for 1ZNV CSU: Contacts of Structural Units for 1ZNV Likely Quarternary Molecular Structure file(s) for 1ZNV Structure Factors (435 Kb) Retrieve 1ZNV in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1ZNV from S2C, [Save to disk] Re-refined 1znv structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1ZNV 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 1ZNV

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 1ZNV, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1znv_B] [1znv] [1znv_A] [1znv_C] [1znv_D] 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 1ZNV: [HNHc ] by SMART

Other resources with information on 1ZNV

Community annotation for 1ZNV at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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