1bs3
From Proteopedia
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| - | [[Image:1bs3.jpg|left|200px]]<br /><applet load="1bs3" size=" | + | [[Image:1bs3.jpg|left|200px]]<br /><applet load="1bs3" size="350" color="white" frame="true" align="right" spinBox="true" |
caption="1bs3, resolution 1.55Å" /> | caption="1bs3, resolution 1.55Å" /> | ||
'''P.SHERMANII SOD(FE+3) FLUORIDE'''<br /> | '''P.SHERMANII SOD(FE+3) FLUORIDE'''<br /> | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1BS3 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Propionibacterium_freudenreichii_subsp._shermanii Propionibacterium freudenreichii subsp. shermanii] with FE and F as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Superoxide_dismutase Superoxide dismutase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.15.1.1 1.15.1.1] Known structural/functional Site: <scene name='pdbsite=FEB:Ferric Fe (Fe(Iii)), Six Fold Coordinated Fluoride At Th ...'>FEB</scene>. Full crystallographic information is available from [http:// | + | 1BS3 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Propionibacterium_freudenreichii_subsp._shermanii Propionibacterium freudenreichii subsp. shermanii] with <scene name='pdbligand=FE:'>FE</scene> and <scene name='pdbligand=F:'>F</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Superoxide_dismutase Superoxide dismutase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.15.1.1 1.15.1.1] Known structural/functional Site: <scene name='pdbsite=FEB:Ferric+Fe+(Fe(Iii)),+Six+Fold+Coordinated+Fluoride+At+Th+...'>FEB</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BS3 OCA]. |
==Reference== | ==Reference== | ||
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[[Category: superoxide dismutase]] | [[Category: superoxide dismutase]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Feb 3 09:33:46 2008'' |
Revision as of 07:33, 3 February 2008
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P.SHERMANII SOD(FE+3) FLUORIDE
Overview
The structure of the Propionibacterium freudenreichii subspecies shermanii, superoxide dismutase (SOD) was determined at various pH values. As a, comparison, the structure of the fluoride coordinated SOD was solved. The, SOD crystallizes at pH 6.1 in the space group C2221 with two subunits, A, and B, in the asymmetric unit. An increase of the pH value changes the, cell parameters slightly but not the symmetry of the crystals. The overall, structure of the SOD remains a compact tetrameter and is comparable to, that at pH 6.1 no matter whether the pH increases or fluoride is added. At, values above pH 7.4, an additional hydroxide ion can bind to the active, center. Its position is similar to the binding site of the fluoride. The, coordination number changes from five to six if the pH increases or, fluoride is added. The binding behavior of the hydroxide ion is different, for subunit A and B. Structures at different pH-values are comparable with, models derived by spectroscopic methods. The influence of temperature on, the binding properties of the hydroxide ion was investigated using, analysis of an X-ray structure solved at pH 8.1 and 140 K. Compared to the, structure at room temperature, the structural changes are observable but, remain small. The consequences of hydroxide binding to the iron are, discussed.
About this Structure
1BS3 is a Single protein structure of sequence from Propionibacterium freudenreichii subsp. shermanii with and as ligands. Active as Superoxide dismutase, with EC number 1.15.1.1 Known structural/functional Site: . Full crystallographic information is available from OCA.
Reference
Manipulating the coordination mumber of the ferric iron within the cambialistic superoxide dismutase of Propionibacterium shermanii by changing the pH-value A crystallographic analysis., Schmidt M, Eur J Biochem. 1999 May;262(1):117-27. PMID:10231372
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