Structure of PDB 7kkn Chain A Binding Site BS02

Receptor Information
>7kkn Chain A (length=207) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
GTILLDLAPEDKEYQSVEEEMQSTIREHRDGGNAGGIFNRYNVIRIQKVV
NKKLRERFCHRQKEVSEENHNHHNERMLFHGSPFINAIIHKGFDERHAGG
MFGAGIYFAENSSKSNQYVYGIGGGTGCPTHKDRSCYICHRQMLFCRVTL
GKSFLQFSTMKMAHAPPGHHSVIGRPSVNGLAYAEYVIYRGEQAYPEYLI
TYQIMKP
Ligand information
Ligand ID2YQ
InChIInChI=1S/C19H14F2N6O/c1-27-18(22-8-23-27)15-16(9-2-4-10(20)5-3-9)24-13-7-11(21)6-12-14(13)17(15)25-26-19(12)28/h2-8,15-16,24H,1H3,(H,26,28)/t15-,16-/m1/s1
InChIKeyHWGQMRYQVZSGDQ-HZPDHXFCSA-N
SMILES
SoftwareSMILES
ACDLabs 12.01Fc1ccc(cc1)C5Nc2c3c(cc(F)c2)C(=O)NN=C3C5c4ncnn4C
OpenEye OEToolkits 1.9.2Cn1c(ncn1)[C@@H]2[C@H](Nc3cc(cc4c3C2=NNC4=O)F)c5ccc(cc5)F
CACTVS 3.385Cn1ncnc1[CH]2[CH](Nc3cc(F)cc4C(=O)NN=C2c34)c5ccc(F)cc5
CACTVS 3.385Cn1ncnc1[C@@H]2[C@H](Nc3cc(F)cc4C(=O)NN=C2c34)c5ccc(F)cc5
OpenEye OEToolkits 1.9.2Cn1c(ncn1)C2C(Nc3cc(cc4c3C2=NNC4=O)F)c5ccc(cc5)F
FormulaC19 H14 F2 N6 O
Name(8S,9R)-5-fluoro-8-(4-fluorophenyl)-9-(1-methyl-1H-1,2,4-triazol-5-yl)-2,7,8,9-tetrahydro-3H-pyrido[4,3,2-de]phthalazin-3-one;
Talazoparib
ChEMBLCHEMBL3137320
DrugBankDB11760
ZINCZINC000072318110
PDB chain7kkn Chain A Residue 9002 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB7kkn Dissecting the molecular determinants of clinical PARP1 inhibitor selectivity for tankyrase1.
Resolution1.48 Å
Binding residue
(original residue number in PDB)
H1184 G1185 G1205 G1206 Y1213 F1214 K1220 S1221 Y1224 I1228
Binding residue
(residue number reindexed from 1)
H80 G81 G99 G100 Y107 F108 K114 S115 Y118 I122
Annotation score1
Enzymatic activity
Enzyme Commision number 2.4.2.-
2.4.2.30: NAD(+) ADP-ribosyltransferase.
Gene Ontology
Molecular Function
GO:0003950 NAD+-protein poly-ADP-ribosyltransferase activity

View graph for
Molecular Function
External links
PDB RCSB:7kkn, PDBe:7kkn, PDBj:7kkn
PDBsum7kkn
PubMed33361107
UniProtO95271|TNKS1_HUMAN Poly [ADP-ribose] polymerase tankyrase-1 (Gene Name=TNKS)

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