1sos: Difference between revisions

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[[Image:1sos.gif|left|200px]]
[[Image:1sos.png|left|200px]]


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==Overview==
{{ABSTRACT_1463506}}
Superoxide dismutase enzymes protect aerobic organisms from oxygen-mediated free-radical damage. Crystallographic structures of recombinant human Cu,Zn superoxide dismutase have been determined, refined, and analyzed at 2.5 A resolution for wild-type and a designed thermostable double-mutant enzyme (Cys-6----Ala, Cys-111----Ser). The 10 subunits (five dimers) in the crystallographic asymmetric unit form an unusual stable open lattice with 80-A-diameter channels. The 10 independently fit and refined subunits provide high accuracy, error analysis, and insights on loop conformations. There is a helix dipole interaction with the Zn site, and 14 residues form two or more structurally conserved side-chain to main-chain hydrogen bonds that appear critical to active-site architecture, loop conformation, and the increased stability resulting from the Cys-111----Ser mutation.


==About this Structure==
==About this Structure==
1SOS is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. The following page contains interesting information on the relation of 1SOS with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb94_1.html Superoxide Dismutase]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SOS OCA].  
1SOS is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. The following page contains interesting information on the relation of 1SOS with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb94_1.html Superoxide Dismutase]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SOS OCA].  
==Reference==
Atomic structures of wild-type and thermostable mutant recombinant human Cu,Zn superoxide dismutase., Parge HE, Hallewell RA, Tainer JA, Proc Natl Acad Sci U S A. 1992 Jul 1;89(13):6109-13. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/1463506 1463506]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Single protein]]
[[Category: Single protein]]
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[[Category: Parge, H E.]]
[[Category: Parge, H E.]]
[[Category: Tainer, J A.]]
[[Category: Tainer, J A.]]
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