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1rki

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{{STRUCTURE_1rki| PDB=1rki | SCENE= }}
{{STRUCTURE_1rki| PDB=1rki | SCENE= }}
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'''Structure of pag5_736 from P. aerophilum with three disulphide bonds'''
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===Structure of pag5_736 from P. aerophilum with three disulphide bonds===
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==Overview==
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Thermophilic organisms flourish in varied high-temperature environmental niches that are deadly to other organisms. Recently, genomic evidence has implicated a critical role for disulfide bonds in the structural stabilization of intracellular proteins from certain of these organisms, contrary to the conventional view that structural disulfide bonds are exclusively extracellular. Here both computational and structural data are presented to explore the occurrence of disulfide bonds as a protein-stabilization method across many thermophilic prokaryotes. Based on computational studies, disulfide-bond richness is found to be widespread, with thermophiles containing the highest levels. Interestingly, only a distinct subset of thermophiles exhibit this property. A computational search for proteins matching this target phylogenetic profile singles out a specific protein, known as protein disulfide oxidoreductase, as a potential key player in thermophilic intracellular disulfide-bond formation. Finally, biochemical support in the form of a new crystal structure of a thermophilic protein with three disulfide bonds is presented together with a survey of known structures from the literature. Together, the results provide insight into biochemical specialization and the diversity of methods employed by organisms to stabilize their proteins in exotic environments. The findings also motivate continued efforts to sequence genomes from divergent organisms.
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(as it appears on PubMed at http://www.pubmed.gov), where 16111437 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16111437}}
==About this Structure==
==About this Structure==
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[[Category: Cxxc motif]]
[[Category: Cxxc motif]]
[[Category: Structural genomic]]
[[Category: Structural genomic]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 07:36:34 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 03:47:34 2008''

Revision as of 00:47, 29 July 2008

Image:1rki.png

Template:STRUCTURE 1rki

Structure of pag5_736 from P. aerophilum with three disulphide bonds

Template:ABSTRACT PUBMED 16111437

About this Structure

1RKI is a Single protein structure of sequence from Pyrobaculum aerophilum. Full crystallographic information is available from OCA.

Reference

The genomics of disulfide bonding and protein stabilization in thermophiles., Beeby M, O'Connor BD, Ryttersgaard C, Boutz DR, Perry LJ, Yeates TO, PLoS Biol. 2005 Sep;3(9):e309. Epub 2005 Aug 23. PMID:16111437

Page seeded by OCA on Tue Jul 29 03:47:34 2008

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