Structure of PDB 3nga Chain A Binding Site BS01

Receptor Information
>3nga Chain A (length=331) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
SGPVPSRARVYTDVNTHRPREYWDYESHVVEWGNQDDYQLVRKLGRGKYS
EVFEAINITNNEKVVVKILKPVKKKKIKREIKILENLRGGPNIITLADIV
KDPVSRTPALVFEHVNNTDFKQLYQTLTDYDIRFYMYEILKALDYCHSMG
IMHRDVKPHNVMIDHEHRKLRLIDWGLAEFYHPGQEYNVRVASRYFKGPE
LLVDYQMYDYSLDMWSLGCMLASMIFRKEPFFHGHDNYDQLVRIAKVLGT
EDLYDYIDKYNIELDPRFNDILGRHSRKRWERFVHSENQHLVSPEALDFL
DKLLRYDHQSRLTAREAMEHPYFYTVVKDQA
Ligand information
Ligand ID3NG
InChIInChI=1S/C19H12ClN3O2/c20-12-2-1-3-13(9-12)22-18-15-6-7-21-10-16(15)14-5-4-11(19(24)25)8-17(14)23-18/h1-10H,(H,22,23)(H,24,25)
InChIKeyMUOKSQABCJCOPU-UHFFFAOYSA-N
SMILES
SoftwareSMILES
ACDLabs 12.01O=C(O)c3cc2nc(c1ccncc1c2cc3)Nc4cccc(Cl)c4
OpenEye OEToolkits 1.7.0c1cc(cc(c1)Cl)Nc2c3ccncc3c4ccc(cc4n2)C(=O)O
CACTVS 3.370OC(=O)c1ccc2c(c1)nc(Nc3cccc(Cl)c3)c4ccncc24
FormulaC19 H12 Cl N3 O2
Name5-[(3-chlorophenyl)amino]benzo[c][2,6]naphthyridine-8-carboxylic acid
ChEMBLCHEMBL1230165
DrugBankDB15408
ZINCZINC000058638454
PDB chain3nga Chain A Residue 1000 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB3nga Structural basis of CX-4945 binding to human protein kinase CK2.
Resolution2.71 Å
Binding residue
(original residue number in PDB)		L45 G46 V53 V66 K68 F113 H115 V116 H160 I174 D175
Binding residue
(residue number reindexed from 1)		L44 G45 V52 V65 K67 F112 H114 V115 H159 I173 D174
Annotation score1
Binding affinityPDBbind-CN: -logKd/Ki=8.00,Kd=10nM
BindingDB: IC50=2000nM,Kd=0.562341nM,Ki=0.380000nM
Enzymatic activity
Catalytic site (original residue number in PDB) D156 K158 N161 D175 P184 S194
Catalytic site (residue number reindexed from 1) D155 K157 N160 D174 P183 S193
Enzyme Commision number 2.7.11.1: non-specific serine/threonine protein kinase.
Gene Ontology
Molecular Function
GO:0004672 protein kinase activity
GO:0004674 protein serine/threonine kinase activity
GO:0005524 ATP binding
Biological Process
GO:0006468 protein phosphorylation

View graph for
Molecular Function
View graph for
Biological Process
External links
PDB RCSB:3nga, PDBe:3nga, PDBj:3nga
PDBsum3nga
PubMed21093442
UniProtP68400|CSK21_HUMAN Casein kinase II subunit alpha (Gene Name=CSNK2A1)

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