1yso

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{{STRUCTURE_1yso| PDB=1yso | SCENE= }}
{{STRUCTURE_1yso| PDB=1yso | SCENE= }}
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'''YEAST CU, ZN SUPEROXIDE DISMUTASE WITH THE REDUCED BRIDGE BROKEN'''
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===YEAST CU, ZN SUPEROXIDE DISMUTASE WITH THE REDUCED BRIDGE BROKEN===
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==Overview==
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The three-dimensional structure of yeast copper-zinc superoxide dismutase (CuZnSOD) has been determined in a new crystal form in space group R32 and refined against X-ray diffraction data using difference Fourier and restrained crystallographic refinement techniques. The unexpected result is that the copper ion has moved approximately 1 angstrom from its position in previously reported CuZnSOD models, the copper-imidazolate bridge is broken, and a roughly trigonal planar ligand geometry characteristic of Cu(I) rather than Cu(II) is revealed. Final R values for the two nearly identical room temperature structures are 18.6% for all 19 149 reflections in the 10.0-1.7 angstrom resolution range and 18. 2% for 17 682 reflections (F &gt; 2 sigma) in the 10.0-1.73 angstrom resolution range. A third structure has been determined using X-ray data collected at -180 degrees C. The final R value for this structure is 19.0% (R(free) = 22.9%) for all 24 356 reflections in the 10.0-1.55 angstrom resolution range. Virtually no change in the positions of the ligands to the zinc center is observed in these models. The origin of the broken bridge and altered Cu-ligand geometry is discussed.
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(as it appears on PubMed at http://www.pubmed.gov), where 8652572 is the PubMed ID number.
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{{ABSTRACT_PUBMED_8652572}}
==About this Structure==
==About this Structure==
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[[Category: Copper]]
[[Category: Copper]]
[[Category: Zinc]]
[[Category: Zinc]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 16:44:04 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 10:04:11 2008''

Revision as of 07:04, 29 July 2008

Image:1yso.png

Template:STRUCTURE 1yso

YEAST CU, ZN SUPEROXIDE DISMUTASE WITH THE REDUCED BRIDGE BROKEN

Template:ABSTRACT PUBMED 8652572

About this Structure

1YSO is a Single protein structure of sequence from Candida albicans. Full crystallographic information is available from OCA.

Reference

Unusual trigonal-planar copper configuration revealed in the atomic structure of yeast copper-zinc superoxide dismutase., Ogihara NL, Parge HE, Hart PJ, Weiss MS, Goto JJ, Crane BR, Tsang J, Slater K, Roe JA, Valentine JS, Eisenberg D, Tainer JA, Biochemistry. 1996 Feb 20;35(7):2316-21. PMID:8652572

Page seeded by OCA on Tue Jul 29 10:04:11 2008

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