Structure of PDB 1zkn Chain A

Receptor sequence
>1zknA (length=334) Species: 9606 (Homo sapiens) [Search protein sequence]
IPRFGVKTEQEDVLAKELEDVNKWGLHVFRIAELSGNRPLTVIMHTIFQE
RDLLKTFKIPVDTLITYLMTLEDHYHADVAYHNNIHAADVVQSTHVLLST
PALEAVFTDLEILAAIFASAIHDVDHPGVSNQFLINTNSELALMYNDSSV
LENHHLAVGFKLLQEENCDIFQNLTKKQRQSLRKMVIDIVLATDMSKHMN
LLADLKTMVETKKVTSSGVLLLDNYSDRIQVLQNMVHCADLSNPTKPLQL
YRQWTDRIMEEFFRQGDRERERGMEISPMCDKHNASVEKSQVGFIDYIVH
PLWETWADLVHPDAQDILDTLEDNREWYQSTIPQ
3D structure
PDB1zkn Crystal Structures of Phosphodiesterases 4 and 5 in Complex with Inhibitor 3-Isobutyl-1-Methylxanthine Suggest a Conformation Determinant of Inhibitor Selectivity
ChainA
Resolution2.1 Å
3D
structure
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Enzymatic activity
Enzyme Commision number 3.1.4.53: 3',5'-cyclic-AMP phosphodiesterase.
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 ZN A H164 H200 D201 D318 H86 H122 D123 D240
BS02 IBM A I336 F340 M357 F372 I258 F262 M279 F294 PDBbind-CN: -logKd/Ki=4.51,IC50=31uM
BindingDB: IC50=31000nM
Gene Ontology
Molecular Function
GO:0004114 3',5'-cyclic-nucleotide phosphodiesterase activity
GO:0008081 phosphoric diester hydrolase activity
Biological Process
GO:0007165 signal transduction

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Molecular Function
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Biological Process
External links
PDB RCSB:1zkn, PDBe:1zkn, PDBj:1zkn
PDBsum1zkn
PubMed14668322
UniProtQ08499|PDE4D_HUMAN 3',5'-cyclic-AMP phosphodiesterase 4D (Gene Name=PDE4D)

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