1rwn

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[[Image:1rwn.gif|left|200px]]
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{{STRUCTURE_1rwn| PDB=1rwn | SCENE= }}
{{STRUCTURE_1rwn| PDB=1rwn | SCENE= }}
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'''Crystal structure of human caspase-1 in complex with 3-{2-ethyl-6-[4-(quinoxalin-2-ylamino)-benzoylamino]-hexanoylamino}-4-oxo-butyric acid'''
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===Crystal structure of human caspase-1 in complex with 3-{2-ethyl-6-[4-(quinoxalin-2-ylamino)-benzoylamino]-hexanoylamino}-4-oxo-butyric acid===
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==Overview==
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Caspase-1 is a key endopeptidase responsible for the post-translational processing of the IL-1beta and IL-18 cytokines and small-molecule inhibitors that modulate the activity of this enzyme are predicted to be important therapeutic treatments for many inflammatory diseases. A fragment-assembly approach, accompanied by structural analysis, was employed to generate caspase-1 inhibitors. With the aid of Tethering with extenders (small molecules that bind to the active-site cysteine and contain a free thiol), two novel fragments that bound to the active site and made a disulfide bond with the extender were identified by mass spectrometry. Direct linking of each fragment to the extender generated submicromolar reversible inhibitors that significantly reduced secretion of IL-1beta but not IL-6 from human peripheral blood mononuclear cells. Thus, Tethering with extenders facilitated rapid identification and synthesis of caspase-1 inhibitors with cell-based activity and subsequent structural analyses provided insights into the enzyme's ability to accommodate different inhibitor-binding modes in the active site.
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(as it appears on PubMed at http://www.pubmed.gov), where 16511067 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16511067}}
==About this Structure==
==About this Structure==
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[[Category: Romanowski, M J.]]
[[Category: Romanowski, M J.]]
[[Category: Protein-small molecule inhibitor complex]]
[[Category: Protein-small molecule inhibitor complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 07:59:43 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 23:22:42 2008''

Revision as of 20:22, 27 July 2008

Image:1rwn.png

Template:STRUCTURE 1rwn

Crystal structure of human caspase-1 in complex with 3-{2-ethyl-6-[4-(quinoxalin-2-ylamino)-benzoylamino]-hexanoylamino}-4-oxo-butyric acid

Template:ABSTRACT PUBMED 16511067

About this Structure

1RWN is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structural analysis of caspase-1 inhibitors derived from Tethering., O'Brien T, Fahr BT, Sopko MM, Lam JW, Waal ND, Raimundo BC, Purkey HE, Pham P, Romanowski MJ, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2005 May 1;61(Pt, 5):451-8. Epub 2005 Apr 9. PMID:16511067

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