1rof
From Proteopedia
(New page: 200px<br /><applet load="1rof" size="450" color="white" frame="true" align="right" spinBox="true" caption="1rof" /> '''NMR STUDY OF 4FE-4S FERREDOXIN OF THERMATOGA...) |
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'''NMR STUDY OF 4FE-4S FERREDOXIN OF THERMATOGA MARITIMA'''<br /> | '''NMR STUDY OF 4FE-4S FERREDOXIN OF THERMATOGA MARITIMA'''<br /> | ||
==Overview== | ==Overview== | ||
| - | The solution structure of the 60-residue 1[Fe4-S4] ferredoxin from the | + | The solution structure of the 60-residue 1[Fe4-S4] ferredoxin from the hyperthermophilic bacterium Thermotoga maritima was determined based on 683 distance and 35 dihedral angle restraints that were obtained from NMR data. In addition, data known from crystallographic studies of ferredoxins was used for modeling of the iron-sulfur cluster and its environment. The protein shows a globular fold very similar to the fold of the related 1[Fe4-S4] ferredoxins from Desulfovibrio gigas and Desulfovibrio africanus, and elements of regular secondary structure similar to those in other ferredoxins were found in the T. maritima protein. In particular, the T. maritima protein displayed a beta-sheet structure made up of strands located at the very NH(2) and COOH termini of the protein, and an internal alpha-helix. The internal beta-sheet observed in the D. gigas and D. africanus ferredoxins could not be confirmed in T. maritima ferredoxin and is thus suggested to be only weakly present or even absent in this protein. This result suggests that thermostability in ferredoxins is not necessarily correlated with the content of stable elements of regular secondary structure. |
==About this Structure== | ==About this Structure== | ||
| - | 1ROF is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima] with SF4 as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http:// | + | 1ROF is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima] with <scene name='pdbligand=SF4:'>SF4</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ROF OCA]. |
==Reference== | ==Reference== | ||
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[[Category: iron-sulfur]] | [[Category: iron-sulfur]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 14:52:56 2008'' |
Revision as of 12:52, 21 February 2008
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NMR STUDY OF 4FE-4S FERREDOXIN OF THERMATOGA MARITIMA
Overview
The solution structure of the 60-residue 1[Fe4-S4] ferredoxin from the hyperthermophilic bacterium Thermotoga maritima was determined based on 683 distance and 35 dihedral angle restraints that were obtained from NMR data. In addition, data known from crystallographic studies of ferredoxins was used for modeling of the iron-sulfur cluster and its environment. The protein shows a globular fold very similar to the fold of the related 1[Fe4-S4] ferredoxins from Desulfovibrio gigas and Desulfovibrio africanus, and elements of regular secondary structure similar to those in other ferredoxins were found in the T. maritima protein. In particular, the T. maritima protein displayed a beta-sheet structure made up of strands located at the very NH(2) and COOH termini of the protein, and an internal alpha-helix. The internal beta-sheet observed in the D. gigas and D. africanus ferredoxins could not be confirmed in T. maritima ferredoxin and is thus suggested to be only weakly present or even absent in this protein. This result suggests that thermostability in ferredoxins is not necessarily correlated with the content of stable elements of regular secondary structure.
About this Structure
1ROF is a Single protein structure of sequence from Thermotoga maritima with as ligand. Full crystallographic information is available from OCA.
Reference
An NMR-derived model for the solution structure of oxidized Thermotoga maritima 1[Fe4-S4] ferredoxin., Sticht H, Wildegger G, Bentrop D, Darimont B, Sterner R, Rosch P, Eur J Biochem. 1996 May 1;237(3):726-35. PMID:8647119
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