2c9s: Difference between revisions

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[[Image:2c9s.gif|left|200px]]
{{Seed}}
[[Image:2c9s.png|left|200px]]


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{{STRUCTURE_2c9s|  PDB=2c9s  |  SCENE=  }}  
{{STRUCTURE_2c9s|  PDB=2c9s  |  SCENE=  }}  


'''1.24 ANGSTROMS RESOLUTION STRUCTURE OF ZN-ZN HUMAN SUPEROXIDE DISMUTASE'''
===1.24 ANGSTROMS RESOLUTION STRUCTURE OF ZN-ZN HUMAN SUPEROXIDE DISMUTASE===




==Overview==
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Human Cu-Zn superoxide dismutase (SOD1) protects cells from the effects of oxidative stress. Mutations in SOD1 are linked to the familial form of amyotrophic lateral sclerosis. Several hypotheses for their toxicity involve the mis-metallation of the enzyme. We present atomic-resolution crystal structures and biophysical data for human SOD1 in three metallation states: Zn-Zn, Cu-Zn and as-isolated. These data represent the first atomic-resolution structures for human SOD1, the first structure of a reduced SOD1, and the first structure of a fully Zn-substituted SOD1 enzyme. Recombinantly expressed as-isolated SOD1 contains a mixture of Zn and Cu at the Cu-binding site. The Zn-Zn structure appears to be at least as stable as the correctly (Cu-Zn) metallated enzyme. These data raise the possibility that in a cellular environment with low availability of free copper, Zn-Zn may be the preferred metallation state of SOD1 prior to its interaction with the copper chaperone.
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{{ABSTRACT_PUBMED_16406071}}


==About this Structure==
==About this Structure==
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[[Category: Zinc]]
[[Category: Zinc]]
[[Category: Zn superoxide dismutase]]
[[Category: Zn superoxide dismutase]]
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Revision as of 13:28, 27 July 2008

File:2c9s.png

Template:STRUCTURE 2c9s

1.24 ANGSTROMS RESOLUTION STRUCTURE OF ZN-ZN HUMAN SUPEROXIDE DISMUTASE

Template:ABSTRACT PUBMED 16406071

About this Structure

2C9S is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Variable metallation of human superoxide dismutase: atomic resolution crystal structures of Cu-Zn, Zn-Zn and as-isolated wild-type enzymes., Strange RW, Antonyuk SV, Hough MA, Doucette PA, Valentine JS, Hasnain SS, J Mol Biol. 2006 Mar 10;356(5):1152-62. Epub 2005 Dec 12. PMID:16406071

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