Structure of PDB 1tl8 Chain A Binding Site BS03

Receptor Information
>1tl8 Chain A (length=565) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
QKWKWWEEERYPEGIKWKFLEHKGPVFAPPYEPLPENVKFYYDGKVMKLS
PKAEEVATFFAKMLDHEYTTKEIFRKNFFKDWRKEMTNEEKNIITNLSKC
DFTQMSQYFKAQTEARKQMSKEEKLKIKEENEKLLKEYGFCIMDNHKERI
ANFKIEPPGLFRGRGNHPKMGMLKRRIMPEDIIINCSKDAKVPSPPPGHK
WKEVRHDNKVTWLVSWTENIQGSIKYIMLNPSSRIKGEKDWQKYETARRL
KKCVDKIRNQYREDWKSKEMKVRQRAVALYFIDKLALRAGNEKEEGETAD
TVGCCSLRVEHINLHPELDGQEYVVEFDFLGKDSIRYYNKVPVEKRVFKN
LQLFMENKQPEDDLFDRLNTGILNKHLQDLMEGLTAKVFRTYNASITLQQ
QLKELTAPDENIPAKILSYNRANRAVAILCNHQRAPPKTFEKSMMNLQTK
IDAKKEQLADARRDLKSAKADAKVMKDAKTKKVVESKKKAVQRLEEQLMK
LEVQATDREENKQIALGTSKLNYLDPRITVAWCKKWGVPIEKIYNKTQRE
KFAWAIDMADEDYEF
Ligand information
Receptor-Ligand Complex Structure
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PDB1tl8 Synthesis and Mechanism of Action Studies of a Series of Norindenoisoquinoline Topoisomerase I Poisons Reveal an Inhibitor with a Flipped Orientation in the Ternary DNA-Enzyme-Inhibitor Complex As Determined by X-ray Crystallographic Analysis
Resolution3.1 Å
Binding residue
(original residue number in PDB)
E356 F361 R362 G363 R364 H367 R488 A489 G490 N491 K493 T501 D533 N574 T585 A586 K587 S643
Binding residue
(residue number reindexed from 1)
E156 F161 R162 G163 R164 H167 R288 A289 G290 N291 K293 T301 D333 N374 T385 A386 K387 S443
Enzymatic activity
Enzyme Commision number 5.6.2.1: DNA topoisomerase.
Gene Ontology
Molecular Function
GO:0003677 DNA binding
GO:0003917 DNA topoisomerase type I (single strand cut, ATP-independent) activity
Biological Process
GO:0006265 DNA topological change
Cellular Component
GO:0005694 chromosome

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Molecular Function

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Biological Process

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Cellular Component
External links
PDB RCSB:1tl8, PDBe:1tl8, PDBj:1tl8
PDBsum1tl8
PubMed16033260
UniProtP11387|TOP1_HUMAN DNA topoisomerase 1 (Gene Name=TOP1)

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