2jd7

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{{STRUCTURE_2jd7| PDB=2jd7 | SCENE= }}
{{STRUCTURE_2jd7| PDB=2jd7 | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE FE-SOAKED FERRITIN FROM THE HYPERTHERMOPHILIC ARCHAEAL ANAEROBE PYROCOCCUS FURIOSUS'''
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===CRYSTAL STRUCTURE OF THE FE-SOAKED FERRITIN FROM THE HYPERTHERMOPHILIC ARCHAEAL ANAEROBE PYROCOCCUS FURIOSUS===
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==Overview==
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The crystal structure of the ferritin from the archaeon, hyperthermophile and anaerobe Pyrococcus furiosus (PfFtn) is presented. While many ferritin structures from bacteria to mammals have been reported, until now only one was available from archaea, the ferritin from Archaeoglobus fulgidus (AfFtn). The PfFtn 24-mer exhibits the 432 point-group symmetry that is characteristic of most ferritins, which suggests that the 23 symmetry found in the previously reported AfFtn is not a common feature of archaeal ferritins. Consequently, the four large pores that were found in AfFtn are not present in PfFtn. The structure has been solved by molecular replacement and refined at 2.75-Angstrom resolution to R = 0.195 and R(free) = 0.247. The ferroxidase center of the aerobically crystallized ferritin contains one iron at site A and shows sites B and C only upon iron or zinc soaking. Electron paramagnetic resonance studies suggest this iron depletion of the native ferroxidase center to be a result of a complexation of iron by the crystallization salt. The extreme thermostability of PfFtn is compared with that of eight structurally similar ferritins and is proposed to originate mostly from the observed high number of intrasubunit hydrogen bonds. A preservation of the monomer fold, rather than the 24-mer assembly, appears to be the most important factor that protects the ferritin from inactivation by heat.
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{{ABSTRACT_PUBMED_17541801}}
==About this Structure==
==About this Structure==
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==Reference==
==Reference==
Crystal structure of the ferritin from the hyperthermophilic archaeal anaerobe Pyrococcus furiosus., Tatur J, Hagen WR, Matias PM, J Biol Inorg Chem. 2007 Jun;12(5):615-30. Epub 2007 Feb 16. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17541801 17541801]
Crystal structure of the ferritin from the hyperthermophilic archaeal anaerobe Pyrococcus furiosus., Tatur J, Hagen WR, Matias PM, J Biol Inorg Chem. 2007 Jun;12(5):615-30. Epub 2007 Feb 16. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17541801 17541801]
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Crystallization and preliminary X-ray characterization of a ferritin from the hyperthermophilic archaeon and anaerobe Pyrococcus furiosus., Matias PM, Tatur J, Carrondo MA, Hagen WR, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2005 May 1;61(Pt, 5):503-6. Epub 2005 Apr 22. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16511080 16511080]
[[Category: Pyrococcus furiosus]]
[[Category: Pyrococcus furiosus]]
[[Category: Single protein]]
[[Category: Single protein]]
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[[Category: Pore]]
[[Category: Pore]]
[[Category: Thermostability]]
[[Category: Thermostability]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 08:43:40 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 12:23:40 2008''

Revision as of 09:23, 27 July 2008

Image:2jd7.png

Template:STRUCTURE 2jd7

CRYSTAL STRUCTURE OF THE FE-SOAKED FERRITIN FROM THE HYPERTHERMOPHILIC ARCHAEAL ANAEROBE PYROCOCCUS FURIOSUS

Template:ABSTRACT PUBMED 17541801

About this Structure

2JD7 is a Single protein structure of sequence from Pyrococcus furiosus. Full crystallographic information is available from OCA.

Reference

Crystal structure of the ferritin from the hyperthermophilic archaeal anaerobe Pyrococcus furiosus., Tatur J, Hagen WR, Matias PM, J Biol Inorg Chem. 2007 Jun;12(5):615-30. Epub 2007 Feb 16. PMID:17541801

Crystallization and preliminary X-ray characterization of a ferritin from the hyperthermophilic archaeon and anaerobe Pyrococcus furiosus., Matias PM, Tatur J, Carrondo MA, Hagen WR, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2005 May 1;61(Pt, 5):503-6. Epub 2005 Apr 22. PMID:16511080

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