Structure of PDB 4ib5 Chain B Binding Site BS01

Receptor Information
>4ib5 Chain B (length=329) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
GPVPSRARVYTDVNTHRPREYWDYESHVVEWGNQDDYQLVRKLGRGKYSE
VFEAINITNNEKVVVKILKPVKKKKIKREIKILENLRGGPNIITLADIVK
DPVSRTPALVFEHVNNTDFKQLYQTLTDYDIRFYMYEILKALDYCHSMGI
MHRDVKPHNVMIDHEHRKLRLIDWGLAEFYHPGQEYNVRVASRYFKGPEL
LVDYQMYDYSLDMWSLGCMLASMIFRKEPFFHGHDNYDQLVRIAKVLGTE
DLYDYIDKYNIELDPRFNDILGRHSRKRWERFVHSENQHLVSPEALDFLD
KLLRYDHQSRLTAREAMEHPYFYTVVKDQ
Ligand information
Receptor-Ligand Complex Structure
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PDB4ib5 First structure of protein kinase CK2 catalytic subunit with an effective CK2 beta-competitive ligand
Resolution2.2 Å
Binding residue
(original residue number in PDB)
Q36 Q40 L41 I57 D103
Binding residue
(residue number reindexed from 1)
Q34 Q38 L39 I55 D101
Enzymatic activity
Catalytic site (original residue number in PDB) D156 K158 N161 D175 P184 S194
Catalytic site (residue number reindexed from 1) D154 K156 N159 D173 P182 S192
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

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Molecular Function

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Biological Process
External links
PDB RCSB:4ib5, PDBe:4ib5, PDBj:4ib5
PDBsum4ib5
PubMed23474121
UniProtP68400|CSK21_HUMAN Casein kinase II subunit alpha (Gene Name=CSNK2A1)

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