Structure of PDB 3qx3 Chain B Binding Site BS02

Receptor Information
>3qx3 Chain B (length=671) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
SKIKGIPKLDDANDAGGKHSLECTLILTEGDSAKSLAVSGLGVIGRDRYG
VFPLRGKILNVREASHKQIMENAEINNIIKIVGLQYKKSYDDAESLKTLR
YGKIMIMTDQDQDGSHIKGLLINFIHHNWPSLLKHGFLEEFITPAKEAKE
YFADMERHRILFRYAGPEDDAAITLAFSKKKIDDRKEWLTNFMEDRRQRR
LHGTKHLTYNDFINKELILFSNSDNERSIPSLVDGFKPGQRKVLFTCFKR
NDKREVKVAQLAGSVAEMSAYHHGEQALMMTIVNLAQNFVGSNNINLLQP
IGQFGTRLHGGKDAASPRYIFTMLSTLARLLFPAVDDNLLKFLYDDNQRV
EPEWYIPIIPMVLINGAEGIGTGWACKLPNYDAREIVNNVRRMLDGLDPH
PMLPNYKNFKGTIQELGQNQYAVSGEIFVVDRNTVEITELPVRTWTQVYK
EQVLEPMLNGPALISDYKEYHTDTTVKFVVKMTEEKLAQAEAAGLHKVFK
LQTTLTCNSMVLFDHMGCLKKYETVQDILKEFFDLRLSYYGLRKEWLVGM
LGAESTKLNNQARFILEKIQGKITIENRSKKDLIQMLVQRGYESDPVKAW
KEAQGPDFNYILNMSLWSLTKEKVEELIKQRDAKGREVNDLKRKSPSDLW
KEDLAAFVEELDKVESQERED
Ligand information
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB3qx3 Structural basis of type II topoisomerase inhibition by the anticancer drug etoposide
Resolution2.162 Å
Binding residue
(original residue number in PDB)		E477 G504 K505 D561 R729 K739 Y773 H775 G776 T783 N786 I872 W947
Binding residue
(residue number reindexed from 1)		E29 G56 K57 D113 R227 K237 Y271 H273 G274 T281 N284 I370 W445
Enzymatic activity
Enzyme Commision number 5.6.2.2: DNA topoisomerase (ATP-hydrolyzing).
Gene Ontology
Molecular Function
GO:0003677 DNA binding
GO:0003918 DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity
GO:0005524 ATP binding
Biological Process
GO:0006259 DNA metabolic process
GO:0006265 DNA topological change

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Molecular Function
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Biological Process
External links
PDB RCSB:3qx3, PDBe:3qx3, PDBj:3qx3
PDBsum3qx3
PubMed21778401
UniProtQ02880|TOP2B_HUMAN DNA topoisomerase 2-beta (Gene Name=TOP2B)

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