Structure of PDB 7kkp Chain A Binding Site BS02

Receptor Information
>7kkp Chain A (length=204) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
GTILLDLAPEDKEYQSVEEEMQSTIREHRDGGNAGGIFNRYNVIRIQKVV
NKKLRERFCHRQKEVSEENHNHHNERMLFHGSPFINAIIHKGFDERHAYI
GGMFGAGIYFAENSSKSNQYVYGIGGGTGCPTHKDRSCYICHRQMLFCRV
TLGKSFLQFSTMKMAHAPPGHHSVIGRPYAEYVIYRGEQAYPEYLITYQI
MKPE
Ligand information
Ligand ID3JD
InChIInChI=1S/C19H20N4O/c20-19(24)17-5-1-3-15-12-23(22-18(15)17)16-8-6-13(7-9-16)14-4-2-10-21-11-14/h1,3,5-9,12,14,21H,2,4,10-11H2,(H2,20,24)/t14-/m1/s1
InChIKeyPCHKPVIQAHNQLW-CQSZACIVSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.7.6c1cc2cn(nc2c(c1)C(=O)N)c3ccc(cc3)[C@@H]4CCCNC4
CACTVS 3.385NC(=O)c1cccc2cn(nc12)c3ccc(cc3)[C@@H]4CCCNC4
OpenEye OEToolkits 1.7.6c1cc2cn(nc2c(c1)C(=O)N)c3ccc(cc3)C4CCCNC4
CACTVS 3.385NC(=O)c1cccc2cn(nc12)c3ccc(cc3)[CH]4CCCNC4
ACDLabs 12.01O=C(c1cccc2cn(nc12)c3ccc(cc3)C4CCCNC4)N
FormulaC19 H20 N4 O
Name2-{4-[(3S)-piperidin-3-yl]phenyl}-2H-indazole-7-carboxamide;
Niraparib
ChEMBLCHEMBL1094636
DrugBankDB11793
ZINCZINC000043206370
PDB chain7kkp Chain A Residue 1402 [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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PDB7kkp Dissecting the molecular determinants of clinical PARP1 inhibitor selectivity for tankyrase1.
Resolution1.4 Å
Binding residue
(original residue number in PDB)
H1184 G1185 Y1213 S1221 Y1224 I1228 E1291
Binding residue
(residue number reindexed from 1)
H80 G81 Y109 S117 Y120 I124 E181
Annotation score1
Binding affinityBindingDB: IC50=2355nM
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:7kkp, PDBe:7kkp, PDBj:7kkp
PDBsum7kkp
PubMed33361107
UniProtO95271|TNKS1_HUMAN Poly [ADP-ribose] polymerase tankyrase-1 (Gene Name=TNKS)

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