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New page: left|200px<br /><applet load="1zdw" size="450" color="white" frame="true" align="right" spinBox="true" caption="1zdw, resolution 2.02Å" /> '''Co-crystal structure...
 
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[[Image:1zdw.gif|left|200px]]<br /><applet load="1zdw" size="450" color="white" frame="true" align="right" spinBox="true"  
[[Image:1zdw.gif|left|200px]]<br /><applet load="1zdw" size="350" color="white" frame="true" align="right" spinBox="true"  
caption="1zdw, resolution 2.02&Aring;" />
caption="1zdw, resolution 2.02&Aring;" />
'''Co-crystal structure of Orf2 an aromatic prenyl transferase from Streptomyces sp. strain CL190 complexed with GSPP and Flaviolin'''<br />
'''Co-crystal structure of Orf2 an aromatic prenyl transferase from Streptomyces sp. strain CL190 complexed with GSPP and Flaviolin'''<br />


==Overview==
==Overview==
The anti-oxidant naphterpin is a natural product containing a, polyketide-based aromatic core with an attached 10-carbon geranyl group, derived from isoprenoid (terpene) metabolism. Hybrid natural products such, as naphterpin that contain 5-carbon (dimethylallyl), 10-carbon (geranyl), or 15-carbon (farnesyl) isoprenoid chains possess biological activities, distinct from their non-prenylated aromatic precursors. These hybrid, natural products represent new anti-microbial, anti-oxidant, anti-inflammatory, anti-viral and anti-cancer compounds. A small number of, aromatic prenyltransferases (PTases) responsible for prenyl group, attachment have only recently been isolated and characterized. Here we, report the gene identification, biochemical characterization and, high-resolution X-ray crystal structures of an architecturally novel, aromatic PTase, Orf2 from Streptomyces sp. strain CL190, with substrates, and substrate analogues bound. In vivo, Orf2 attaches a geranyl group to a, 1,3,6,8-tetrahydroxynaphthalene-derived polyketide during naphterpin, biosynthesis. In vitro, Orf2 catalyses carbon-carbon-based and, carbon-oxygen-based prenylation of a diverse collection of, hydroxyl-containing aromatic acceptors of synthetic, microbial and plant, origin. These crystal structures, coupled with in vitro assays, provide a, basis for understanding and potentially manipulating the regio-specific, prenylation of aromatic small molecules using this structurally unique, family of aromatic PTases.
The anti-oxidant naphterpin is a natural product containing a polyketide-based aromatic core with an attached 10-carbon geranyl group derived from isoprenoid (terpene) metabolism. Hybrid natural products such as naphterpin that contain 5-carbon (dimethylallyl), 10-carbon (geranyl) or 15-carbon (farnesyl) isoprenoid chains possess biological activities distinct from their non-prenylated aromatic precursors. These hybrid natural products represent new anti-microbial, anti-oxidant, anti-inflammatory, anti-viral and anti-cancer compounds. A small number of aromatic prenyltransferases (PTases) responsible for prenyl group attachment have only recently been isolated and characterized. Here we report the gene identification, biochemical characterization and high-resolution X-ray crystal structures of an architecturally novel aromatic PTase, Orf2 from Streptomyces sp. strain CL190, with substrates and substrate analogues bound. In vivo, Orf2 attaches a geranyl group to a 1,3,6,8-tetrahydroxynaphthalene-derived polyketide during naphterpin biosynthesis. In vitro, Orf2 catalyses carbon-carbon-based and carbon-oxygen-based prenylation of a diverse collection of hydroxyl-containing aromatic acceptors of synthetic, microbial and plant origin. These crystal structures, coupled with in vitro assays, provide a basis for understanding and potentially manipulating the regio-specific prenylation of aromatic small molecules using this structurally unique family of aromatic PTases.


==About this Structure==
==About this Structure==
1ZDW is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Streptomyces_sp. Streptomyces sp.] with MG, NO3, FLV and GST as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1ZDW OCA].  
1ZDW is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Streptomyces_sp. Streptomyces sp.] with <scene name='pdbligand=MG:'>MG</scene>, <scene name='pdbligand=NO3:'>NO3</scene>, <scene name='pdbligand=FLV:'>FLV</scene> and <scene name='pdbligand=GST:'>GST</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZDW OCA].  


==Reference==
==Reference==
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[[Category: Streptomyces sp.]]
[[Category: Streptomyces sp.]]
[[Category: Kuzuyama, T.]]
[[Category: Kuzuyama, T.]]
[[Category: Noel, J.P.]]
[[Category: Noel, J P.]]
[[Category: Richard, S.B.]]
[[Category: Richard, S B.]]
[[Category: FLV]]
[[Category: FLV]]
[[Category: GST]]
[[Category: GST]]
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[[Category: pt-barrel]]
[[Category: pt-barrel]]


''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Sun Nov 25 04:50:16 2007''
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 16:14:39 2008''