1n9e
From Proteopedia
(New page: 200px<br /><applet load="1n9e" size="450" color="white" frame="true" align="right" spinBox="true" caption="1n9e, resolution 1.65Å" /> '''CRYSTAL STRUCTURE OF...) |
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| - | [[Image:1n9e.gif|left|200px]]<br /><applet load="1n9e" size=" | + | [[Image:1n9e.gif|left|200px]]<br /><applet load="1n9e" size="350" color="white" frame="true" align="right" spinBox="true" |
caption="1n9e, resolution 1.65Å" /> | caption="1n9e, resolution 1.65Å" /> | ||
'''CRYSTAL STRUCTURE OF PICHIA PASTORIS LYSYL OXIDASE PPLO'''<br /> | '''CRYSTAL STRUCTURE OF PICHIA PASTORIS LYSYL OXIDASE PPLO'''<br /> | ||
==Overview== | ==Overview== | ||
| - | Pichia pastoris lysyl oxidase (PPLO) is unique among the structurally | + | Pichia pastoris lysyl oxidase (PPLO) is unique among the structurally characterized copper amine oxidases in being able to oxidize the side chain of lysine residues in polypeptides. Remarkably, the yeast PPLO is nearly as effective in oxidizing a mammalian tropoelastin substrate as is a true mammalian lysyl oxidase isolated from bovine aorta. Thus, PPLO is functionally related to the copper-containing lysyl oxidases despite the lack of any significant sequence similarity with these enzymes. The structure of PPLO has been determined at 1.65 A resolution. PPLO is a homodimer in which each subunit contains a Type II copper atom and a topaquinone cofactor (TPQ) formed by the posttranslational modification of a tyrosine residue. While PPLO has tertiary and quaternary topologies similar to those found in other quinone-containing copper amine oxidases, its active site is substantially more exposed and accessible. The structural elements that are responsible for the accessibility of the active site are identified and discussed. |
==About this Structure== | ==About this Structure== | ||
| - | 1N9E is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Pichia_pastoris Pichia pastoris] with NAG, CU, CA and SO4 as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Protein-lysine_6-oxidase Protein-lysine 6-oxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.4.3.13 1.4.3.13] Full crystallographic information is available from [http:// | + | 1N9E is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Pichia_pastoris Pichia pastoris] with <scene name='pdbligand=NAG:'>NAG</scene>, <scene name='pdbligand=CU:'>CU</scene>, <scene name='pdbligand=CA:'>CA</scene> and <scene name='pdbligand=SO4:'>SO4</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Protein-lysine_6-oxidase Protein-lysine 6-oxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.4.3.13 1.4.3.13] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1N9E OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Protein-lysine 6-oxidase]] | [[Category: Protein-lysine 6-oxidase]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
| - | [[Category: Duff, A | + | [[Category: Duff, A P.]] |
| - | [[Category: Guss, J | + | [[Category: Guss, J M.]] |
[[Category: CA]] | [[Category: CA]] | ||
[[Category: CU]] | [[Category: CU]] | ||
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[[Category: tpq]] | [[Category: tpq]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 14:03:38 2008'' |
Revision as of 12:03, 21 February 2008
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CRYSTAL STRUCTURE OF PICHIA PASTORIS LYSYL OXIDASE PPLO
Overview
Pichia pastoris lysyl oxidase (PPLO) is unique among the structurally characterized copper amine oxidases in being able to oxidize the side chain of lysine residues in polypeptides. Remarkably, the yeast PPLO is nearly as effective in oxidizing a mammalian tropoelastin substrate as is a true mammalian lysyl oxidase isolated from bovine aorta. Thus, PPLO is functionally related to the copper-containing lysyl oxidases despite the lack of any significant sequence similarity with these enzymes. The structure of PPLO has been determined at 1.65 A resolution. PPLO is a homodimer in which each subunit contains a Type II copper atom and a topaquinone cofactor (TPQ) formed by the posttranslational modification of a tyrosine residue. While PPLO has tertiary and quaternary topologies similar to those found in other quinone-containing copper amine oxidases, its active site is substantially more exposed and accessible. The structural elements that are responsible for the accessibility of the active site are identified and discussed.
About this Structure
1N9E is a Single protein structure of sequence from Pichia pastoris with , , and as ligands. Active as Protein-lysine 6-oxidase, with EC number 1.4.3.13 Full crystallographic information is available from OCA.
Reference
The crystal structure of Pichia pastoris lysyl oxidase., Duff AP, Cohen AE, Ellis PJ, Kuchar JA, Langley DB, Shepard EM, Dooley DM, Freeman HC, Guss JM, Biochemistry. 2003 Dec 30;42(51):15148-57. PMID:14690425
Page seeded by OCA on Thu Feb 21 14:03:38 2008
Categories: Pichia pastoris | Protein-lysine 6-oxidase | Single protein | Duff, A P. | Guss, J M. | CA | CU | NAG | SO4 | Amine oxidase | Copper | Quinoprotein | Topaquinone enzyme | Tpq
