3QX3	Isomerase Dna Isomerase Inhibitor	date	Mar 01, 2011
title	Human Topoisomerase Iibeta In Complex With Dna And Etoposide
authors	C.C.Wu, T.K.Li, L.Farh, L.Y.Lin, T.S.Lin, Y.J.Yu, T.J.Yen, C.W.Chia N.L.Chan
compound		source
Molecule: Dna Topoisomerase 2-Beta Chain: A, B Fragment: Htop2beta Cleavage Core, Unp Residues 450-1206 Synonym: Dna Topoisomerase II, Beta Isozyme Ec: 5.99.1.3 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Top2b Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21star(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet51b
Molecule: Dna (5'-D(Papgpcpcpgpapgpc)-3') Chain: C, E Engineered: Yes		Synthetic: Yes Other_details: The Oligonucleotide Sequence 5'-Agccgagctgca 3' Was Purchased From Viogene.;
Molecule: Dna (5'-D(Ptpgpcpapgpcptpcpgpgpcpt)-3 Chain: D, F Engineered: Yes		Synthetic: Yes Other_details: The Oligonucleotide Sequence 5'-Agccgagctgca 3' Was Purchased From Viogene.
symmetry	Space Group: P 1 21 1	R_factor 0.168 R_Free 0.207
crystal cell	length a length b length c angle alpha angle beta angle gamma 80.149 176.801 94.067 90.00 111.58 90.00
method	X-Ray Diffraction	resolution	2.16 Å
ligand	EVP, MG BindingDB	enzyme	Isomerase E.C.5.99.1.3 BRENDA
Gene Ontology	Chain Function Process Component A, B
Primary reference	Structural basis of type II topoisomerase inhibition by the anticancer drug etoposide., Wu CC, Li TK, Farh L, Lin LY, Lin TS, Yu YJ, Yen TJ, Chiang CW, Chan NL, Science. 2011 Jul 22;333(6041):459-62. PMID:21778401

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (268 Kb) [Save to disk] Biological Unit Coordinates (3qx3.pdb1.gz) 260 Kb LPC: Ligand-Protein Contacts for 3QX3 CSU: Contacts of Structural Units for 3QX3 Structure Factors (1964 Kb) Retrieve 3QX3 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3QX3 from S2C, [Save to disk] Re-refined 3qx3 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

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Visual 3D analysis of 3QX3

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Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 3QX3, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3qx3_B] [3qx3_A] [3qx3_D] [3qx3_C] [3qx3_F] [3qx3_E] [3qx3] SWISS-PROT database: Domain organization of by SWISSPFAM Domains found in 3QX3: [TOP2c] [TOP4c ] by SMART

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Community annotation for 3QX3 at PDBWiki (http://pdbwiki.org)

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