3HQG	Hydrolase Dna	date	Jun 06, 2009
title	Crystal Structure Of Restriction Endonuclease Ecorii Catalyt Terminal Domain In Complex With Cognate Dna
authors	D.Golovenko, E.Manakova, S.Grazulis, G.Tamulaitiene, V.Siksnys
compound		source
Molecule: Type-2 Restriction Enzyme Ecorii Chain: A Fragment: C-Terminal Catalytic Domain (Unp Residues 183-404 Synonym: R.Ecorii, Type II Restriction Enzyme Ecorii, Endon Ecorii; Ec: 3.1.21.4 Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Ecorii, Ecoriir Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Jm109 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pqe30
Molecule: 5'-D(Tpcpgpapcpcpapgpgpcptpa)-3' Chain: B Engineered: Yes		Synthetic: Yes
Molecule: 5'-D(Tpapgpcpcptpgpgptpcpgpa)-3' Chain: C Engineered: Yes		Synthetic: Yes
symmetry	Space Group: P 21 21 2	R_factor 0.236 R_Free 0.293
crystal cell	length a length b length c angle alpha angle beta angle gamma 77.054 57.971 61.010 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.60 Å
ligand	GOL	enzyme	Hydrolase E.C.3.1.21.4 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	Structural mechanisms for the 5'-CCWGG sequence recognition by the N- and C-terminal domains of EcoRII., Golovenko D, Manakova E, Tamulaitiene G, Grazulis S, Siksnys V, Nucleic Acids Res. 2009 Sep 3. PMID:19729506

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (52 Kb) [Save to disk] Biological Unit Coordinates (3hqg.pdb1.gz) 93 Kb LPC: Ligand-Protein Contacts for 3HQG CSU: Contacts of Structural Units for 3HQG Structure Factors (133 Kb) Retrieve 3HQG in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3HQG from S2C, [Save to disk] Re-refined 3hqg structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3HQG 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 3HQG

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 3HQG, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3hqg] [3hqg_A] [3hqg_B] [3hqg_C] SWISS-PROT database: [P14633] Domain organization of [T2E2_ECOLX] by SWISSPFAM

Other resources with information on 3HQG

Community annotation for 3HQG at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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