1qnn

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[[Image:1qnn.gif|left|200px]]
[[Image:1qnn.gif|left|200px]]
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{{Structure
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<!--
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|PDB= 1qnn |SIZE=350|CAPTION= <scene name='initialview01'>1qnn</scene>, resolution 1.80&Aring;
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The line below this paragraph, containing "STRUCTURE_1qnn", creates the "Structure Box" on the page.
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|SITE= <scene name='pdbsite=FE1:Metal+Binding+Site+Of+Chain+A'>FE1</scene>, <scene name='pdbsite=FE2:Metal+Binding+Site+Of+Chain+B'>FE2</scene>, <scene name='pdbsite=FE3:Metal+Binding+Site+Of+Chain+C'>FE3</scene> and <scene name='pdbsite=FE4:Metal+Binding+Site+Of+Chain+D'>FE4</scene>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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|LIGAND= <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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|ACTIVITY= <span class='plainlinks'>[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] </span>
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or leave the SCENE parameter empty for the default display.
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|GENE=
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-->
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|DOMAIN=
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{{STRUCTURE_1qnn| PDB=1qnn | SCENE= }}
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|RELATEDENTRY=
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1qnn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qnn OCA], [http://www.ebi.ac.uk/pdbsum/1qnn PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1qnn RCSB]</span>
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}}
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'''CAMBIALISTIC SUPEROXIDE DISMUTASE FROM PORPHYROMONAS GINGIVALIS'''
'''CAMBIALISTIC SUPEROXIDE DISMUTASE FROM PORPHYROMONAS GINGIVALIS'''
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[[Category: Sugio, S.]]
[[Category: Sugio, S.]]
[[Category: Yamakura, F.]]
[[Category: Yamakura, F.]]
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[[Category: oxidoreductase]]
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[[Category: Oxidoreductase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:29:23 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 23:16:27 2008''
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Revision as of 03:29, 3 May 2008

Image:1qnn.gif

Template:STRUCTURE 1qnn

CAMBIALISTIC SUPEROXIDE DISMUTASE FROM PORPHYROMONAS GINGIVALIS


Overview

The crystal structure of cambialistic superoxide dismutase (SOD) from Porphyromonas gingivalis, which exhibits full activity with either Fe or Mn at the active site, has been determined at 1.8-A resolution by molecular replacement and refined to a crystallographic R factor of 17.9% (Rfree 22.3%). The crystals belong to the space group P212121 (a = 75.5 A, b = 102.7 A, c = 99.6 A) with four identical subunits in the asymmetric unit. Each pair of subunits forms a compact dimer, but not a tetramer, with 222 point symmetry. Each subunit has 191 amino-acid residues most of which are visible in electron density maps, and consists of seven alpha helices and one three-stranded antiparallel beta sheet. The metal ion, a 3 : 1 mixture of Fe and Mn, is coordinated with five ligands (His27, His74, His161, Asp157, and water) arranged at the vertices of a trigonal bipyramid. Although the overall structural features, including the metal coordination geometry, are similar to those found in other single-metal containing SODs, P. gingivalis SOD more closely resembles the dimeric Fe-SODs from Escherichia coli rather than another cambialistic SOD from Propionibacterium shermanii, which itself is rather similar to other tetrameric SODs.

About this Structure

1QNN is a Single protein structure of sequence from Porphyromonas gingivalis. Full crystallographic information is available from OCA.

Reference

Crystal structure of cambialistic superoxide dismutase from porphyromonas gingivalis., Sugio S, Hiraoka BY, Yamakura F, Eur J Biochem. 2000 Jun;267(12):3487-95. PMID:10848964 Page seeded by OCA on Sat May 3 06:29:23 2008

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