1bug

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[[Image:1bug.gif|left|200px]]<br /><applet load="1bug" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:1bug.gif|left|200px]]
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caption="1bug, resolution 2.70&Aring;" />
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'''CATECHOL OXIDASE FROM IPOMOEA BATATAS (SWEET POTATOES)-INHIBITOR COMPLEX WITH PHENYLTHIOUREA (PTU)'''<br />
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{{Structure
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|PDB= 1bug |SIZE=350|CAPTION= <scene name='initialview01'>1bug</scene>, resolution 2.70&Aring;
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|SITE= <scene name='pdbsite=CU1:Binding+Site+For+Cu+A+In+Monomer+A'>CU1</scene>, <scene name='pdbsite=CU2:Binding+Site+For+Cu+A+In+Monomer+B'>CU2</scene>, <scene name='pdbsite=CU3:Binding+Site+For+Cu+B+In+Monomer+A'>CU3</scene> and <scene name='pdbsite=CU4:Binding+Site+For+Cu+B+In+Monomer+B'>CU4</scene>
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|LIGAND= <scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene> and <scene name='pdbligand=URS:N-PHENYLTHIOUREA'>URS</scene>
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|ACTIVITY= [http://en.wikipedia.org/wiki/Catechol_oxidase Catechol oxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.10.3.1 1.10.3.1]
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|GENE=
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}}
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'''CATECHOL OXIDASE FROM IPOMOEA BATATAS (SWEET POTATOES)-INHIBITOR COMPLEX WITH PHENYLTHIOUREA (PTU)'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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1BUG is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Ipomoea_batatas Ipomoea batatas] with <scene name='pdbligand=CU:'>CU</scene> and <scene name='pdbligand=URS:'>URS</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Catechol_oxidase Catechol oxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.10.3.1 1.10.3.1] Known structural/functional Sites: <scene name='pdbsite=CU1:Binding+Site+For+Cu+A+In+Monomer+A'>CU1</scene>, <scene name='pdbsite=CU2:Binding+Site+For+Cu+A+In+Monomer+B'>CU2</scene>, <scene name='pdbsite=CU3:Binding+Site+For+Cu+B+In+Monomer+A'>CU3</scene> and <scene name='pdbsite=CU4:Binding+Site+For+Cu+B+In+Monomer+B'>CU4</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BUG OCA].
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1BUG is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Ipomoea_batatas Ipomoea batatas]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BUG OCA].
==Reference==
==Reference==
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Crystal structure of a plant catechol oxidase containing a dicopper center., Klabunde T, Eicken C, Sacchettini JC, Krebs B, Nat Struct Biol. 1998 Dec;5(12):1084-90. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=9846879 9846879]
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Crystal structure of a plant catechol oxidase containing a dicopper center., Klabunde T, Eicken C, Sacchettini JC, Krebs B, Nat Struct Biol. 1998 Dec;5(12):1084-90. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9846879 9846879]
[[Category: Catechol oxidase]]
[[Category: Catechol oxidase]]
[[Category: Ipomoea batatas]]
[[Category: Ipomoea batatas]]
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[[Category: catechol oxidase]]
[[Category: catechol oxidase]]
[[Category: dicopper enzyme]]
[[Category: dicopper enzyme]]
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[[Category: ipomoea batatas]]
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[[Category: ipomoea batata]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 11:59:14 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:15:55 2008''

Revision as of 08:15, 20 March 2008

Image:1bug.gif


PDB ID 1bug

Drag the structure with the mouse to rotate
, resolution 2.70Å
Sites: , , and
Ligands: and
Activity: Catechol oxidase, with EC number 1.10.3.1
Coordinates: save as pdb, mmCIF, xml



CATECHOL OXIDASE FROM IPOMOEA BATATAS (SWEET POTATOES)-INHIBITOR COMPLEX WITH PHENYLTHIOUREA (PTU)


Overview

Catechol oxidases are ubiquitous plant enzymes containing a dinuclear copper center. In the wound-response mechanism of the plant they catalyze the oxidation of a broad range of ortho-diphenols to the corresponding o-quinones coupled with the reduction of oxygen to water. The crystal structures of the enzyme from sweet potato in the resting dicupric Cu(II)-Cu(II) state, the reduced dicuprous Cu(I)-Cu(I) form, and in complex with the inhibitor phenylthiourea were analyzed. The catalytic copper center is accommodated in a central four-helix-bundle located in a hydrophobic pocket close to the surface. Both metal binding sites are composed of three histidine ligands. His 109, ligated to the CuA site, is covalently linked to Cys 92 by an unusual thioether bond. Based on biochemical, spectroscopic and the presented structural data, a catalytical mechanism is proposed in which one of the oxygen atoms of the diphenolic substrate binds to CuB of the oxygenated enzyme.

About this Structure

1BUG is a Single protein structure of sequence from Ipomoea batatas. Full crystallographic information is available from OCA.

Reference

Crystal structure of a plant catechol oxidase containing a dicopper center., Klabunde T, Eicken C, Sacchettini JC, Krebs B, Nat Struct Biol. 1998 Dec;5(12):1084-90. PMID:9846879

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