1bd6

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[[Image:1bd6.gif|left|200px]]
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{{STRUCTURE_1bd6| PDB=1bd6 | SCENE= }}
{{STRUCTURE_1bd6| PDB=1bd6 | SCENE= }}
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'''7-FE FERREDOXIN FROM BACILLUS SCHLEGELII, NMR, MINIMIZED AVERAGE STRUCTURE'''
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===7-FE FERREDOXIN FROM BACILLUS SCHLEGELII, NMR, MINIMIZED AVERAGE STRUCTURE===
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==Overview==
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The solution structure of the paramagnetic seven-iron ferredoxin from Bacillus schlegelii in its oxidized form has been determined by 1H NMR. The protein, which contains 77 amino acids, is thermostable. Seventy-two residues and 79% of all theoretically expected proton resonances have been assigned. The structure has been determined through torsion angle dynamics calculations with the program DYANA, using 966 meaningful NOEs (from a total of 1305), hydrogen bond constraints, and NMR derived dihedral angle constraints for the cluster ligating cysteines, and by using crystallographic information to build up the two clusters. Afterwards, restrained energy minimization and restrained molecular dynamics were applied to each conformer of the family. The final family of 20 structures has RMSD values from the mean structure of 0.68 A for the backbone atoms and of 1.16 A for all heavy atoms. The contributions to the thermal stability of the B. schlegelii ferredoxin are discussed by comparing the present structure to that of the less stable Azotobacter vinelandii ferredoxin I which is the only other available structure of a bacterial seven-iron ferredoxin. It is proposed that the hydrophobic interactions and the hydrogen bond network linking the N-terminus and the C-terminus together and a high number of salt bridges contribute to the stability.
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(as it appears on PubMed at http://www.pubmed.gov), where 9657695 is the PubMed ID number.
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{{ABSTRACT_PUBMED_9657695}}
==About this Structure==
==About this Structure==
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1BD6 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bacillus_schlegelii Bacillus schlegelii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BD6 OCA].
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1BD6 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bacillus_schlegelii Bacillus schlegelii]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BD6 OCA].
==Reference==
==Reference==
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[[Category: Electron transport]]
[[Category: Electron transport]]
[[Category: Iron-sulfur]]
[[Category: Iron-sulfur]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 11:21:35 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 18:52:23 2008''

Revision as of 15:52, 30 June 2008

Image:1bd6.png

Template:STRUCTURE 1bd6

7-FE FERREDOXIN FROM BACILLUS SCHLEGELII, NMR, MINIMIZED AVERAGE STRUCTURE

Template:ABSTRACT PUBMED 9657695

About this Structure

1BD6 is a Single protein structure of sequence from Bacillus schlegelii. Full experimental information is available from OCA.

Reference

Solution structure of the oxidized Fe7S8 ferredoxin from the thermophilic bacterium Bacillus schlegelii by 1H NMR spectroscopy., Aono S, Bentrop D, Bertini I, Donaire A, Luchinat C, Niikura Y, Rosato A, Biochemistry. 1998 Jul 7;37(27):9812-26. PMID:9657695

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