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1uml

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{{STRUCTURE_1uml| PDB=1uml | SCENE= }}
{{STRUCTURE_1uml| PDB=1uml | SCENE= }}
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'''Crystal structure of adenosine deaminase complexed with a potent inhibitor FR233624'''
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===Crystal structure of adenosine deaminase complexed with a potent inhibitor FR233624===
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==Overview==
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We disclose herein optimization efforts around the novel, highly potent non-nucleoside adenosine deaminase (ADA) inhibitor, 1-[(R)-1-hydroxy-4-(6-(3-(1-methylbenzimidazol-2-yl)propionylamino)indol-1 -yl)-2-butyl]imidazole-4-carboxamide 1 (K(i)= 7.7 nM), which we recently reported. Structure-based drug design (SBDD) utilizing the crystal structure of the 1/ADA complex was performed in order to obtain structure-activity relationships (SAR) for this type of compound rationally and effectively. To utilize the newly formed hydrophobic space (F2), replacement of the benzimidazole ring of 1 with a n-propyl chain (4b) or a simple phenyl ring (4c) was tolerated in terms of binding activity, and the length of the methylene-spacer was shown to be optimal at two or three. Replacement of an amide with an ether as a linker was also well tolerated in terms of binding activity and moreover improved the oral absorption (6a and 6b). Finally, transformation of indol-1-yl to indol-3-yl resulted in discovery of a novel highly potent and orally bioavailable ADA inhibitor, 1-[(R)-4-(5-(3-(4-chlorophenyl)propoxy)-1-methylindol-3-yl)-1-hydroxy-2-bu tyl]imidazole-4-carboxamide 8c.
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The line below this paragraph, {{ABSTRACT_PUBMED_15239652}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 15239652 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15239652}}
==About this Structure==
==About this Structure==
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[[Category: Beta barrel]]
[[Category: Beta barrel]]
[[Category: Zinc]]
[[Category: Zinc]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 11:25:54 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 21:54:38 2008''

Revision as of 18:54, 27 July 2008

Image:1uml.png

Template:STRUCTURE 1uml

Crystal structure of adenosine deaminase complexed with a potent inhibitor FR233624

Template:ABSTRACT PUBMED 15239652

About this Structure

1UML is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.

Reference

Structure-based design, synthesis, and structure-activity relationship studies of novel non-nucleoside adenosine deaminase inhibitors., Terasaka T, Kinoshita T, Kuno M, Seki N, Tanaka K, Nakanishi I, J Med Chem. 2004 Jul 15;47(15):3730-43. PMID:15239652

Page seeded by OCA on Sun Jul 27 21:54:38 2008

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