1udt

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[[Image:1udt.gif|left|200px]]
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{{Seed}}
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{{STRUCTURE_1udt| PDB=1udt | SCENE= }}
{{STRUCTURE_1udt| PDB=1udt | SCENE= }}
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'''Crystal structure of Human Phosphodiesterase 5 complexed with Sildenafil(Viagra)'''
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===Crystal structure of Human Phosphodiesterase 5 complexed with Sildenafil(Viagra)===
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==Overview==
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Phosphodiesterases (PDEs) are a superfamily of enzymes that degrade the intracellular second messengers cyclic AMP and cyclic GMP. As essential regulators of cyclic nucleotide signalling with diverse physiological functions, PDEs are drug targets for the treatment of various diseases, including heart failure, depression, asthma, inflammation and erectile dysfunction. Of the 12 PDE gene families, cGMP-specific PDE5 carries out the principal cGMP-hydrolysing activity in human corpus cavernosum tissue. It is well known as the target of sildenafil citrate (Viagra) and other similar drugs for the treatment of erectile dysfunction. Despite the pressing need to develop selective PDE inhibitors as therapeutic drugs, only the cAMP-specific PDE4 structures are currently available. Here we present the three-dimensional structures of the catalytic domain (residues 537-860) of human PDE5 complexed with the three drug molecules sildenafil, tadalafil (Cialis) and vardenafil (Levitra). These structures will provide opportunities to design potent and selective PDE inhibitors with improved pharmacological profiles.
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The line below this paragraph, {{ABSTRACT_PUBMED_12955149}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 12955149 is the PubMed ID number.
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{{ABSTRACT_PUBMED_12955149}}
==About this Structure==
==About this Structure==
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[[Category: Selective inhibitor]]
[[Category: Selective inhibitor]]
[[Category: Sildenafil]]
[[Category: Sildenafil]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 11:04:53 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 11:19:01 2008''

Revision as of 08:19, 28 July 2008

Image:1udt.png

Template:STRUCTURE 1udt

Crystal structure of Human Phosphodiesterase 5 complexed with Sildenafil(Viagra)

Template:ABSTRACT PUBMED 12955149

About this Structure

1UDT is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure of the catalytic domain of human phosphodiesterase 5 with bound drug molecules., Sung BJ, Hwang KY, Jeon YH, Lee JI, Heo YS, Kim JH, Moon J, Yoon JM, Hyun YL, Kim E, Eum SJ, Park SY, Lee JO, Lee TG, Ro S, Cho JM, Nature. 2003 Sep 4;425(6953):98-102. PMID:12955149

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