2qym

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{{STRUCTURE_2qym| PDB=2qym | SCENE= }}
{{STRUCTURE_2qym| PDB=2qym | SCENE= }}
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'''crystal structure of unliganded PDE4C2'''
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===crystal structure of unliganded PDE4C2===
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==Overview==
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PDE4 (phosphodiesterase-4)-selective inhibitors have attracted much attention as potential therapeutics for the treatment of both depression and major inflammatory diseases, but their practical application has been compromised by side effects. A possible cause for the side effects is that current PDE4-selective inhibitors similarly inhibit isoforms from all four PDE4 subfamilies. The development of PDE4 subfamily-selective inhibitors has been hampered by a lack of structural information. In the present study, we rectify this by providing the crystal structures of the catalytic domains of PDE4A, PDE4B and PDE4D in complex with the PDE4 inhibitor NVP {4-[8-(3-nitrophenyl)-[1,7]naphthyridin-6-yl]benzoic acid} as well as the unliganded PDE4C structure. NVP binds in the same conformation to the deep cAMP substrate pocket and interacts with the same residues in each instance. However, detailed structural comparison reveals significant conformational differences. Although the active sites of PDE4B and PDE4D are mostly comparable, PDE4A shows significant displacements of the residues next to the invariant glutamine residue that is critical for substrate and inhibitor binding. PDE4C appears to be more distal from other PDE4 subfamilies, with certain key residues being disordered. Our analyses provide the first structural basis for the development of PDE4 subfamily-selective inhibitors.
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{{ABSTRACT_PUBMED_17727341}}
==About this Structure==
==About this Structure==
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[[Category: Hydrolase]]
[[Category: Hydrolase]]
[[Category: Pde4c structure]]
[[Category: Pde4c structure]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 21:04:52 2008''

Revision as of 18:04, 28 July 2008

Image:2qym.png

Template:STRUCTURE 2qym

crystal structure of unliganded PDE4C2

Template:ABSTRACT PUBMED 17727341

About this Structure

2QYM is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structures of the four subfamilies of phosphodiesterase-4 provide insight into the selectivity of their inhibitors., Wang H, Peng MS, Chen Y, Geng J, Robinson H, Houslay MD, Cai J, Ke H, Biochem J. 2007 Dec 1;408(2):193-201. PMID:17727341

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