1Q8R	Recombination,Hydrolase	date	Aug 22, 2003
title	Structure Of E.Coli Rusa Holliday Junction Resolvase
authors	J.B.Rafferty, E.L.Bolt, T.A.Muranova, S.E.Sedelnikova, P.Leonard A.Pasquo, P.J.Baker, D.W.Rice, G.J.Sharples, R.G.Lloyd
compound		source
Molecule: Crossover Junction Endodeoxyribonuclease Rusa Chain: A, B Synonym: Rusa Resolvase; Holliday Junction Nuclease Rusa; H Junction Resolvase; Endodeoxyribonuclease Rus; Ec: 3.1.22.- Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Rusa Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21(De3)Plyss Expression_system_vector_type: Pt7-7 Expression_system_plasmid: Peb259
symmetry	Space Group: P 1 21 1	R_factor 0.190 R_Free 0.226
crystal cell	length a length b length c angle alpha angle beta angle gamma 45.352 50.052 49.597 90.00 101.42 90.00
method	X-Ray Diffraction	resolution	1.90 Å
ligand		enzyme	Hydrolase E.C.3.1.22 BRENDA
Gene Ontology	Chain Function Process Component A, B nuclease activity endonuclease activity
Primary reference	The structure of Escherichia coli RusA endonuclease reveals a new Holliday junction DNA binding fold., Rafferty JB, Bolt EL, Muranova TA, Sedelnikova SE, Leonard P, Pasquo A, Baker PJ, Rice DW, Sharples GJ, Lloyd RG, Structure (Camb) 2003 Dec;11(12):1557-67. PMID:14656440

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (43 Kb) [Save to disk] Biological Unit Coordinates (1q8r.pdb1.gz) 38 Kb CSU: Contacts of Structural Units for 1Q8R Likely Quarternary Molecular Structure file(s) for 1Q8R Structure Factors (445 Kb) Retrieve 1Q8R in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1Q8R from S2C, [Save to disk] Re-refined 1q8r structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1Q8R 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 1Q8R

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 1Q8R, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1q8ra_, region A [Jmol] [rasmolscript] [script source]     - Domain d1q8rb_, region B [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1q8r_A] [1q8r] [1q8r_B] SWISS-PROT database: [P0AG74] Domain organization of [RUSA_ECOLI] by SWISSPFAM

Other resources with information on 1Q8R

Community annotation for 1Q8R at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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