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2fdn

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{{STRUCTURE_2fdn| PDB=2fdn | SCENE= }}
{{STRUCTURE_2fdn| PDB=2fdn | SCENE= }}
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'''2[4FE-4S] FERREDOXIN FROM CLOSTRIDIUM ACIDI-URICI'''
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===2[4FE-4S] FERREDOXIN FROM CLOSTRIDIUM ACIDI-URICI===
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==Overview==
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The crystal structure of the 2[4Fe-4S] ferredoxin from Clostridium acidurici has been solved using X-ray diffraction data extending to atomic resolution, 0.94 A, recorded at 100 K. The model was refined with anisotropic representation of atomic displacement parameters for all non-hydrogen atoms and with hydrogens riding on their parent atoms. Stereochemical restraints were applied to the protein chain but not to the iron-sulfur clusters. The final R factor is 10.03 % for all data. Inversion of the final least-squares matrix allowed direct estimation of the errors of individual parameters. The estimated errors in positions for protein main chain atoms are below 0.02 A and about 0.003 A for the heavier [4Fe-4S] cluster atoms. Significant differences between the stereochemistry of the two clusters and distortion of both of them from ideal Td tetrahedral symmetry can be defined in detail at this level of accuracy. Regions of alternative conformations include not only protein side chains but also two regions of the main chain. One such region is the loop of residues 25-29, which was highly disordered in the room temperature structure.
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{{ABSTRACT_PUBMED_9405040}}
==About this Structure==
==About this Structure==
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[[Category: Electron transport]]
[[Category: Electron transport]]
[[Category: Iron-sulfur]]
[[Category: Iron-sulfur]]
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Revision as of 21:34, 27 July 2008

Image:2fdn.png

Template:STRUCTURE 2fdn

2[4FE-4S] FERREDOXIN FROM CLOSTRIDIUM ACIDI-URICI

Template:ABSTRACT PUBMED 9405040

About this Structure

2FDN is a Single protein structure of sequence from Clostridium acidurici. Full crystallographic information is available from OCA.

Reference

Atomic resolution (0.94 A) structure of Clostridium acidurici ferredoxin. Detailed geometry of [4Fe-4S] clusters in a protein., Dauter Z, Wilson KS, Sieker LC, Meyer J, Moulis JM, Biochemistry. 1997 Dec 23;36(51):16065-73. PMID:9405040

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