2oxi
From Proteopedia
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| - | [[Image:2oxi.gif|left|200px]] | + | [[Image:2oxi.gif|left|200px]] |
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| - | '''REFINED CRYSTAL STRUCTURE OF CU-SUBSTITUTED ALCOHOL DEHYDROGENASE AT 2.1 ANGSTROMS RESOLUTION''' | + | {{Structure |
| + | |PDB= 2oxi |SIZE=350|CAPTION= <scene name='initialview01'>2oxi</scene>, resolution 2.1Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>, <scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene> and <scene name='pdbligand=DMS:DIMETHYL SULFOXIDE'>DMS</scene> | ||
| + | |ACTIVITY= [http://en.wikipedia.org/wiki/Alcohol_dehydrogenase Alcohol dehydrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.1.1 1.1.1.1] | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''REFINED CRYSTAL STRUCTURE OF CU-SUBSTITUTED ALCOHOL DEHYDROGENASE AT 2.1 ANGSTROMS RESOLUTION''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2OXI is a [ | + | 2OXI is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Equus_caballus Equus caballus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2OXI OCA]. |
==Reference== | ==Reference== | ||
| - | Refined structure of Cu-substituted alcohol dehydrogenase at 2.1 A resolution., Al-Karadaghi S, Cedergren-Zeppezauer ES, Dauter Z, Wilson KS, Acta Crystallogr D Biol Crystallogr. 1995 Sep 1;51(Pt 5):805-13. PMID:[http:// | + | Refined structure of Cu-substituted alcohol dehydrogenase at 2.1 A resolution., Al-Karadaghi S, Cedergren-Zeppezauer ES, Dauter Z, Wilson KS, Acta Crystallogr D Biol Crystallogr. 1995 Sep 1;51(Pt 5):805-13. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15299812 15299812] |
[[Category: Alcohol dehydrogenase]] | [[Category: Alcohol dehydrogenase]] | ||
[[Category: Equus caballus]] | [[Category: Equus caballus]] | ||
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[[Category: oxidoreductase(nad(a)-choh(d))]] | [[Category: oxidoreductase(nad(a)-choh(d))]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 18:05:51 2008'' |
Revision as of 16:05, 20 March 2008
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| , resolution 2.1Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , and | ||||||
| Activity: | Alcohol dehydrogenase, with EC number 1.1.1.1 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
REFINED CRYSTAL STRUCTURE OF CU-SUBSTITUTED ALCOHOL DEHYDROGENASE AT 2.1 ANGSTROMS RESOLUTION
Overview
Liver alcohol dehydrogenase (LADH) is a Zn(II)-dependent dimeric enzyme. LADH with the active-site Zn(II) substituted by Cu(II) resembles blue (type I) copper proteins by its spectroscopic characteristics. In this work we present the X-ray structure of the active site Cu(II)-substituted LADH complex with NADH and dimethyl sulfoxide (DMSO). The structure was solved by molecular replacement. The space group is P2(1) with cell dimensions a = 44.4, b = 180.6, c = 50.8 A and beta = 108 degrees. There is one dimer of the enzyme in the asymmetric unit. The refinement was carried out to a crystallographic R-factor of 16.1% for 41 119 unique reflections in the resolution range 12.0 to 2.1 A. The coordination geometry of Cu(II) in LADH is compared with the active-site metal coordination in the Zn-LADH-NADH-DMSO complex and blue-copper proteins. The distances from the metal to the protein ligands (Cys46, His67 and Cys174) are similar for the Zn(II) and Cu(II) ions. The distances of the O atom of the inhibitor DMSO to the Cu(II) ion in the two subunits of the dimer are 3.19 and 3.45 A. These are considerably longer than the corresponding distances for the Zn(II) enzyme, 2.19 and 2.15 A. The Cu(II) ion is positioned nearly in the plane of the three protein ligands (NS(2)) with a geometry similar to the trigonal arrangement of the three strongly bound ligands (N(2)S) in blue-copper proteins. This coordination probably accounts for the similarity of the spectral characteristics of Cu(II)-LADH and type I copper proteins.
About this Structure
2OXI is a Single protein structure of sequence from Equus caballus. Full crystallographic information is available from OCA.
Reference
Refined structure of Cu-substituted alcohol dehydrogenase at 2.1 A resolution., Al-Karadaghi S, Cedergren-Zeppezauer ES, Dauter Z, Wilson KS, Acta Crystallogr D Biol Crystallogr. 1995 Sep 1;51(Pt 5):805-13. PMID:15299812
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