2fm0
From Proteopedia
(New page: 200px<br /> <applet load="2fm0" size="450" color="white" frame="true" align="right" spinBox="true" caption="2fm0, resolution 2.Å" /> '''Crystal structure of ...) |
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| - | [[Image:2fm0.gif|left|200px]]<br /> | + | [[Image:2fm0.gif|left|200px]]<br /><applet load="2fm0" size="350" color="white" frame="true" align="right" spinBox="true" |
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caption="2fm0, resolution 2.Å" /> | caption="2fm0, resolution 2.Å" /> | ||
'''Crystal structure of PDE4D in complex with L-869298'''<br /> | '''Crystal structure of PDE4D in complex with L-869298'''<br /> | ||
==Overview== | ==Overview== | ||
| - | Type 4 phosphodiesterase (PDE4) inhibitors are emerging as new treatments | + | Type 4 phosphodiesterase (PDE4) inhibitors are emerging as new treatments for a number of disorders including asthma and chronic obstructive pulmonary disease. Here we report the biochemical characterization on the second generation inhibitor (+)-1 (L-, IC50=0.4 nM) and its enantiomer (-)-1 (L-, IC50=43 nM) and their cocrystal structures with PDE4D at 2.0 A resolution. Despite the 107-fold affinity difference, both enantiomers interact with the same sets of residues in the rigid active site. The weaker (-)-1 adopts an unfavorable conformation to preserve the pivotal interactions between the Mg-bound waters and the N-oxide of pyridine. These structures support a model in which inhibitors are anchored by the invariant glutamine at one end and the metal-pocket residues at another end. This model provides explanations for most of the observed structure-activity relationship and the metal ion dependency of the catechol-ether based inhibitors and should facilitate their further design. |
==Disease== | ==Disease== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2FM0 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with ZN, MG and M98 as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/3',5'-cyclic-nucleotide_phosphodiesterase 3',5'-cyclic-nucleotide phosphodiesterase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.4.17 3.1.4.17] Full crystallographic information is available from [http:// | + | 2FM0 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with <scene name='pdbligand=ZN:'>ZN</scene>, <scene name='pdbligand=MG:'>MG</scene> and <scene name='pdbligand=M98:'>M98</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/3',5'-cyclic-nucleotide_phosphodiesterase 3',5'-cyclic-nucleotide phosphodiesterase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.4.17 3.1.4.17] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FM0 OCA]. |
==Reference== | ==Reference== | ||
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[[Category: pde. enantiomer binding]] | [[Category: pde. enantiomer binding]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 17:22:45 2008'' |
Revision as of 15:22, 21 February 2008
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Crystal structure of PDE4D in complex with L-869298
Contents |
Overview
Type 4 phosphodiesterase (PDE4) inhibitors are emerging as new treatments for a number of disorders including asthma and chronic obstructive pulmonary disease. Here we report the biochemical characterization on the second generation inhibitor (+)-1 (L-, IC50=0.4 nM) and its enantiomer (-)-1 (L-, IC50=43 nM) and their cocrystal structures with PDE4D at 2.0 A resolution. Despite the 107-fold affinity difference, both enantiomers interact with the same sets of residues in the rigid active site. The weaker (-)-1 adopts an unfavorable conformation to preserve the pivotal interactions between the Mg-bound waters and the N-oxide of pyridine. These structures support a model in which inhibitors are anchored by the invariant glutamine at one end and the metal-pocket residues at another end. This model provides explanations for most of the observed structure-activity relationship and the metal ion dependency of the catechol-ether based inhibitors and should facilitate their further design.
Disease
Known disease associated with this structure: Stroke, susceptibility to, 1 OMIM:[600129]
About this Structure
2FM0 is a Single protein structure of sequence from Homo sapiens with , and as ligands. Active as 3',5'-cyclic-nucleotide phosphodiesterase, with EC number 3.1.4.17 Full crystallographic information is available from OCA.
Reference
Enantiomer discrimination illustrated by the high resolution crystal structures of type 4 phosphodiesterase., Huai Q, Sun Y, Wang H, Macdonald D, Aspiotis R, Robinson H, Huang Z, Ke H, J Med Chem. 2006 Mar 23;49(6):1867-73. PMID:16539372
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