Structure of PDB 1om1 Chain A Binding Site BS01

Receptor Information
>1om1 Chain A (length=325) Species: 4577 (Zea mays) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
SKARVYADVNVLRPKEYWDYEALTVQWGEQDDYEVVRKVGRGKYSEVFEG
INVNNNEKCIIKILKPVKKKKIKREIKILQNLCGGPNIVKLLDIVRDQHS
KTPSLIFEYVNNTDFKVLYPTLTDYDIRYYIYELLKALDYCHSQGIMHRD
VKPHNVMIDHELRKLRLIDWGLAEFYHPGKEYNVRVASRYFKGPELLVDL
QDYDYSLDMWSLGCMFAGMIFRKEPFFYGHDNHDQLVKIAKVLGTDGLNV
YLNKYRIELDPQLEALVGRHSRKPWLKFMNADNQHLVSPEAIDFLDKLLR
YDHQERLTALEAMTHPYFQQVRAAE
Ligand information
Ligand IDIQA
InChIInChI=1S/C17H12N2O3/c20-15(21)9-12-10-5-1-3-7-13(10)19-14-8-4-2-6-11(14)17(22)18-16(12)19/h1-8H,9H2,(H,18,22)(H,20,21)
InChIKeyINSBKYCYLCEBOD-UHFFFAOYSA-N
SMILES
SoftwareSMILES
CACTVS 3.341OC(=O)Cc1c2NC(=O)c3ccccc3n2c4ccccc14
OpenEye OEToolkits 1.5.0c1ccc2c(c1)c(c3n2-c4ccccc4C(=O)N3)CC(=O)O
ACDLabs 10.04O=C(O)Cc3c2NC(=O)c1c(cccc1)n2c4ccccc34
FormulaC17 H12 N2 O3
Name(5-OXO-5,6-DIHYDRO-INDOLO[1,2-A]QUINAZOLIN-7-YL)-ACETIC ACID
ChEMBLCHEMBL92361
DrugBankDB01765
ZINCZINC000002047511
PDB chain1om1 Chain A Residue 338 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1om1 Biochemical and three-dimensional-structural study of the specific inhibition of protein kinase CK2 by [5-oxo-5,6-dihydroindolo-(1,2-a)quinazolin-7-yl]acetic acid (IQA).
Resolution1.68 Å
Binding residue
(original residue number in PDB)		V45 V53 I66 K68 F113 V116 M163 I174 D175
Binding residue
(residue number reindexed from 1)		V39 V47 I60 K62 F107 V110 M157 I168 D169
Annotation score1
Binding affinityMOAD: Ki=0.17uM
PDBbind-CN: -logKd/Ki=6.77,Ki=0.17uM
Enzymatic activity
Catalytic site (original residue number in PDB) D156 K158 N161 D175 S194
Catalytic site (residue number reindexed from 1) D150 K152 N155 D169 S188
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
GO:0044024 histone H2AS1 kinase activity
GO:0106310 protein serine kinase activity
Biological Process
GO:0006338 chromatin remodeling
GO:0006468 protein phosphorylation
GO:0016310 phosphorylation
GO:0051726 regulation of cell cycle
Cellular Component
GO:0005634 nucleus
GO:0005829 cytosol
GO:0005956 protein kinase CK2 complex
GO:0043231 intracellular membrane-bounded organelle

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1om1, PDBe:1om1, PDBj:1om1
PDBsum1om1
PubMed12816539
UniProtP28523|CSK2A_MAIZE Casein kinase II subunit alpha (Gene Name=ACK2)

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