3bef: Difference between revisions

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[[Image:3bef.jpg|left|200px]]
{{Seed}}
[[Image:3bef.png|left|200px]]


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{{STRUCTURE_3bef|  PDB=3bef  |  SCENE=  }}  
{{STRUCTURE_3bef|  PDB=3bef  |  SCENE=  }}  


'''Crystal structure of thrombin bound to the extracellular fragment of PAR1'''
===Crystal structure of thrombin bound to the extracellular fragment of PAR1===




==Overview==
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Allostery is a common mechanism of regulation of enzyme activity and specificity, and its signatures are readily identified from functional studies. For many allosteric systems, structural evidence exists of long-range communication among protein domains, but rarely has this communication been traced to a detailed pathway. The thrombin mutant D102N is stabilized in a self-inhibited conformation where access to the active site is occluded by a collapse of the entire 215-219 beta-strand. Binding of a fragment of the protease activated receptor PAR1 to exosite I, 30-A away from the active site region, causes a large conformational change that corrects the position of the 215-219 beta-strand and restores access to the active site. The crystal structure of the thrombin-PAR1 complex, solved at 2.2-A resolution, reveals the details of this long-range allosteric communication in terms of a network of polar interactions.
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{{ABSTRACT_PUBMED_18250335}}


==Disease==
==Disease==
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==Reference==
==Reference==
Structural identification of the pathway of long-range communication in an allosteric enzyme., Gandhi PS, Chen Z, Mathews FS, Di Cera E, Proc Natl Acad Sci U S A. 2008 Feb 12;105(6):1832-7. Epub 2008 Feb 4. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/18250335 18250335]
Structural identification of the pathway of long-range communication in an allosteric enzyme., Gandhi PS, Chen Z, Mathews FS, Di Cera E, Proc Natl Acad Sci U S A. 2008 Feb 12;105(6):1832-7. Epub 2008 Feb 4. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/18250335 18250335]
Molecular dissection of Na+ binding to thrombin., Pineda AO, Carrell CJ, Bush LA, Prasad S, Caccia S, Chen ZW, Mathews FS, Di Cera E, J Biol Chem. 2004 Jul 23;279(30):31842-53. Epub 2004 May 19. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15152000 15152000]
Crystal structure of thrombin in a self-inhibited conformation., Pineda AO, Chen ZW, Bah A, Garvey LC, Mathews FS, Di Cera E, J Biol Chem. 2006 Oct 27;281(43):32922-8. Epub 2006 Sep 5. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16954215 16954215]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Protein complex]]
[[Category: Protein complex]]
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[[Category: Transmembrane]]
[[Category: Transmembrane]]
[[Category: Zymogen]]
[[Category: Zymogen]]
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