2num: Difference between revisions
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'''Soluble domain of Rieske Iron-Sulfur Protein''' | {{Structure | ||
|PDB= 2num |SIZE=350|CAPTION= <scene name='initialview01'>2num</scene>, resolution 1.50Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=FES:FE2/S2 (INORGANIC) CLUSTER'>FES</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/Ubiquinol--cytochrome-c_reductase Ubiquinol--cytochrome-c reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.10.2.2 1.10.2.2] | |||
|GENE= petA, fbcF ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1063 Rhodobacter sphaeroides]) | |||
}} | |||
'''Soluble domain of Rieske Iron-Sulfur Protein''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
2NUM is a [ | 2NUM is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Rhodobacter_sphaeroides Rhodobacter sphaeroides]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2NUM OCA]. | ||
==Reference== | ==Reference== | ||
Atomic resolution structures of rieske iron-sulfur protein: role of hydrogen bonds in tuning the redox potential of iron-sulfur clusters., Kolling DJ, Brunzelle JS, Lhee S, Crofts AR, Nair SK, Structure. 2007 Jan;15(1):29-38. PMID:[http:// | Atomic resolution structures of rieske iron-sulfur protein: role of hydrogen bonds in tuning the redox potential of iron-sulfur clusters., Kolling DJ, Brunzelle JS, Lhee S, Crofts AR, Nair SK, Structure. 2007 Jan;15(1):29-38. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17223530 17223530] | ||
[[Category: Rhodobacter sphaeroides]] | [[Category: Rhodobacter sphaeroides]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: iron sulfur cluster]] | [[Category: iron sulfur cluster]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 17:51:22 2008'' | ||
Revision as of 15:51, 20 March 2008
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| 2num, resolution 1.50Å | |||||||||||||
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| Ligands: | FES | ||||||||||||
| Gene: | petA, fbcF (Rhodobacter sphaeroides) | ||||||||||||
| Activity: | Ubiquinol--cytochrome-c reductase, with EC number 1.10.2.2 | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Soluble domain of Rieske Iron-Sulfur Protein
Overview
The Rieske [2Fe-2S] iron-sulfur protein of cytochrome bc(1) functions as the initial electron acceptor in the rate-limiting step of the catalytic reaction. Prior studies have established roles for a number of conserved residues that hydrogen bond to ligands of the [2Fe-2S] cluster. We have constructed site-specific variants at two of these residues, measured their thermodynamic and functional properties, and determined atomic resolution X-ray crystal structures for the native protein at 1.2 A resolution and for five variants (Ser-154-->Ala, Ser-154-->Thr, Ser-154-->Cys, Tyr-156-->Phe, and Tyr-156-->Trp) to resolutions between 1.5 A and 1.1 A. These structures and complementary biophysical data provide a molecular framework for understanding the role hydrogen bonds to the cluster play in tuning thermodynamic properties, and hence the rate of this bioenergetic reaction. These studies provide a detailed structure-function dissection of the role of hydrogen bonds in tuning the redox potentials of [2Fe-2S] clusters.
About this Structure
2NUM is a Single protein structure of sequence from Rhodobacter sphaeroides. Full crystallographic information is available from OCA.
Reference
Atomic resolution structures of rieske iron-sulfur protein: role of hydrogen bonds in tuning the redox potential of iron-sulfur clusters., Kolling DJ, Brunzelle JS, Lhee S, Crofts AR, Nair SK, Structure. 2007 Jan;15(1):29-38. PMID:17223530
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