3IGC	Isomerase Dna	date	Jul 27, 2009
title	Smallpox Virus Topoisomerase-Dna Transition State
authors	K.Perry, Y.Hwang, F.D.Bushman, G.D.Van Duyne
compound		source
Molecule: Dna Topoisomerase 1 Chain: A Synonym: Dna Topoisomerase I Ec: 5.99.1.2 Engineered: Yes Mutation: Yes		Organism_scientific: Variola Virus Organism_common: Smallpox Virus Organism_taxid: 10255 Strain: Western Reserve Gene: H6r, I6r, Top1 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet28
Molecule: 5'-D(Gptpgptpcpgpcpcpcptpt)-3' Chain: B Engineered: Yes Other_details: Upstream Dna Cleaved Strand		Synthetic: Yes Other_details: Oligonucleotide Synthesized By Yale Keck Fac
Molecule: 5'-D(Aptptpcpc)-3' Chain: C Engineered: Yes Other_details: Downstream Dna Cleaved Strand		Synthetic: Yes Other_details: Oligonucleotide Synthesized By Yale Keck Fac
Molecule: 5'-D(Cpgpgpapaptpapapgpgpgpcpgpapc Chain: D Engineered: Yes Other_details: Uncleaved Dna Strand		Synthetic: Yes Other_details: Oligonucleotide Synthesized By Yale Keck Fac
symmetry	Space Group: P 42 21 2	R_factor 0.177 R_Free 0.244
crystal cell	length a length b length c angle alpha angle beta angle gamma 103.999 103.999 93.010 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.10 Å
ligand	VO4	enzyme	Isomerase E.C.5.99.1.2 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	Insights from the structure of a smallpox virus topoisomerase-DNA transition state mimic., Perry K, Hwang Y, Bushman FD, Van Duyne GD, Structure. 2010 Jan 13;18(1):127-37. PMID:20152159

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (124 Kb) [Save to disk] Biological Unit Coordinates (3igc.pdb1.gz) 118 Kb LPC: Ligand-Protein Contacts for 3IGC CSU: Contacts of Structural Units for 3IGC Structure Factors (256 Kb) Retrieve 3IGC in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3IGC from S2C, [Save to disk] Re-refined 3igc structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3IGC 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 3IGC

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 3IGC, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3igc_A] [3igc_C] [3igc_D] [3igc] [3igc_B] SWISS-PROT database: Domain organization of by SWISSPFAM

Other resources with information on 3IGC

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

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