1gal
From Proteopedia
(New page: 200px<br /><applet load="1gal" size="450" color="white" frame="true" align="right" spinBox="true" caption="1gal, resolution 2.3Å" /> '''CRYSTAL STRUCTURE OF ...) |
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| - | [[Image:1gal.gif|left|200px]]<br /><applet load="1gal" size=" | + | [[Image:1gal.gif|left|200px]]<br /><applet load="1gal" size="350" color="white" frame="true" align="right" spinBox="true" |
caption="1gal, resolution 2.3Å" /> | caption="1gal, resolution 2.3Å" /> | ||
'''CRYSTAL STRUCTURE OF GLUCOSE OXIDASE FROM ASPERGILLUS NIGER: REFINED AT 2.3 ANGSTROMS RESOLUTION'''<br /> | '''CRYSTAL STRUCTURE OF GLUCOSE OXIDASE FROM ASPERGILLUS NIGER: REFINED AT 2.3 ANGSTROMS RESOLUTION'''<br /> | ||
==Overview== | ==Overview== | ||
| - | Glucose oxidase (beta-D-glucose: oxygen 1-oxidoreductase, EC 1.1.3.4) is | + | Glucose oxidase (beta-D-glucose: oxygen 1-oxidoreductase, EC 1.1.3.4) is an FAD-dependent enzyme that catalyzes the oxidation of beta-D-glucose by molecular oxygen. The crystal structure of the partially deglycosylated enzyme from Aspergillus niger has been determined by isomorphous replacement and refined to 2.3 A resolution. The final crystallographic R-value is 18.1% for reflections between 10.0 and 2.3 A resolution. The refined model includes 580 amino acid residues, the FAD cofactor, six N-acetylglucosamine residues, three mannose residues and 152 solvent molecules. The FAD-binding domain is topologically very similar to other FAD-binding proteins. The substrate-binding domain is formed from non-continuous segments of sequence and is characterized by a deep pocket. One side of this pocket is formed by a six-stranded antiparallel beta-sheet with the flavin ring system of FAD located at the bottom of the pocket on the opposite side. Part of the entrance to the active site pocket is at the interface to the second subunit of the dimeric enzyme and is formed by a 20-residue lid, which in addition covers parts of the FAD-binding site. The carbohydrate moiety attached to Asn89 at the tip of this lid forms a link between the subunits of the dimer. |
==About this Structure== | ==About this Structure== | ||
| - | 1GAL is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/ ] with NAG and FAD as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Glucose_oxidase Glucose oxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.3.4 1.1.3.4] Full crystallographic information is available from [http:// | + | 1GAL is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/ ] with <scene name='pdbligand=NAG:'>NAG</scene> and <scene name='pdbligand=FAD:'>FAD</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Glucose_oxidase Glucose oxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.3.4 1.1.3.4] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GAL OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Glucose oxidase]] | [[Category: Glucose oxidase]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
| - | [[Category: Hecht, H | + | [[Category: Hecht, H J.]] |
[[Category: Hendle, J.]] | [[Category: Hendle, J.]] | ||
[[Category: Kalisz, K.]] | [[Category: Kalisz, K.]] | ||
| - | [[Category: Schmid, R | + | [[Category: Schmid, R D.]] |
[[Category: Schomburg, D.]] | [[Category: Schomburg, D.]] | ||
[[Category: FAD]] | [[Category: FAD]] | ||
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[[Category: oxidoreductase(flavoprotein)]] | [[Category: oxidoreductase(flavoprotein)]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:48:00 2008'' |
Revision as of 10:48, 21 February 2008
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CRYSTAL STRUCTURE OF GLUCOSE OXIDASE FROM ASPERGILLUS NIGER: REFINED AT 2.3 ANGSTROMS RESOLUTION
Overview
Glucose oxidase (beta-D-glucose: oxygen 1-oxidoreductase, EC 1.1.3.4) is an FAD-dependent enzyme that catalyzes the oxidation of beta-D-glucose by molecular oxygen. The crystal structure of the partially deglycosylated enzyme from Aspergillus niger has been determined by isomorphous replacement and refined to 2.3 A resolution. The final crystallographic R-value is 18.1% for reflections between 10.0 and 2.3 A resolution. The refined model includes 580 amino acid residues, the FAD cofactor, six N-acetylglucosamine residues, three mannose residues and 152 solvent molecules. The FAD-binding domain is topologically very similar to other FAD-binding proteins. The substrate-binding domain is formed from non-continuous segments of sequence and is characterized by a deep pocket. One side of this pocket is formed by a six-stranded antiparallel beta-sheet with the flavin ring system of FAD located at the bottom of the pocket on the opposite side. Part of the entrance to the active site pocket is at the interface to the second subunit of the dimeric enzyme and is formed by a 20-residue lid, which in addition covers parts of the FAD-binding site. The carbohydrate moiety attached to Asn89 at the tip of this lid forms a link between the subunits of the dimer.
About this Structure
1GAL is a Single protein structure of sequence from [1] with and as ligands. Active as Glucose oxidase, with EC number 1.1.3.4 Full crystallographic information is available from OCA.
Reference
Crystal structure of glucose oxidase from Aspergillus niger refined at 2.3 A resolution., Hecht HJ, Kalisz HM, Hendle J, Schmid RD, Schomburg D, J Mol Biol. 1993 Jan 5;229(1):153-72. PMID:8421298
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