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1bex

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{{STRUCTURE_1bex| PDB=1bex | SCENE= }}
{{STRUCTURE_1bex| PDB=1bex | SCENE= }}
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'''STRUCTURE OF RUTHENIUM-MODIFIED PSEUDOMONAS AERUGINOSA AZURIN'''
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===STRUCTURE OF RUTHENIUM-MODIFIED PSEUDOMONAS AERUGINOSA AZURIN===
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==Overview==
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The crystal structure of Ru(2, 2'-bipyridine)2(imidazole)(His83)azurin (RuAz) has been determined to 2.3 A -resolution by X-ray crystallography. The spectroscopic and thermodynamic properties of both the native protein and [Ru(2, 2'-bipyridine)2(imidazole)2]2+ are maintained in the modified protein. Dark-green RuAz crystals grown from PEG 4000, LiNO3, CuCl2 and Tris buffer are monoclinic, belong to the space group C2 and have cell parameters a = 100.6, b = 35.4, c = 74.7 A and beta = 106. 5 degrees. In addition, [Ru(2,2'-bipyridine)2(imidazole)2]SO4 x 10H2O was synthesized, crystallized and structurally characterized by X-ray crystallography. Red-brown crystals of this complex are monoclinic, space group P21/n, unit-cell parameters a = 13.230 (2), b = 18.197 (4), c = 16.126 (4) A, beta = 108.65 (2) degrees. Stereochemical parameters for the refinement of Ru(2, 2'-bipyridine)2(imidazole)(His83) were taken from the atomic coordinates of [Ru(2,2'-bipyridine)2(imidazole)2]2+. The structure of RuAz confirms that His83 is the only site of chemical modification and that the native azurin structure is not perturbed significantly by the ruthenium label.
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{{ABSTRACT_PUBMED_10089343}}
==About this Structure==
==About this Structure==
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[[Category: Azurin]]
[[Category: Azurin]]
[[Category: Electron transport]]
[[Category: Electron transport]]
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Revision as of 16:00, 30 June 2008

Image:1bex.png

Template:STRUCTURE 1bex

STRUCTURE OF RUTHENIUM-MODIFIED PSEUDOMONAS AERUGINOSA AZURIN

Template:ABSTRACT PUBMED 10089343

About this Structure

1BEX is a Single protein structure of sequence from Pseudomonas aeruginosa. Full crystallographic information is available from OCA.

Reference

Structures of ruthenium-modified Pseudomonas aeruginosa azurin and [Ru(2,2'-bipyridine)2(imidazole)2]SO4 x 10H2O., Faham S, Day MW, Connick WB, Crane BR, Di Bilio AJ, Schaefer WP, Rees DC, Gray HB, Acta Crystallogr D Biol Crystallogr. 1999 Feb;55(Pt 2):379-85. PMID:10089343

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