2rdq

<StructureSection load='2rdq' size='340' side='right' caption='[[2rdq]], [[Resolution|resolution]] 1.31&Aring;' scene=''>

<table><tr><td colspan='2'>[[2rdq]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"streptomyces_avermitilis"_burg_et_al._1979 "streptomyces avermitilis" burg et al. 1979]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2RDQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2RDQ FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=AKG:2-OXOGLUTARIC+ACID'>AKG</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>

<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2rdn|2rdn]], [[2rdr|2rdr]], [[2rds|2rds]]</td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ptlH ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=33903 "Streptomyces avermitilis" Burg et al. 1979])</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2rdq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2rdq OCA], [http://pdbe.org/2rdq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2rdq RCSB], [http://www.ebi.ac.uk/pdbsum/2rdq PDBsum]</span></td></tr>

[[http://www.uniprot.org/uniprot/PTLH_STRAW PTLH_STRAW]] Catalyzes the conversion of 1-deoxypentalenic acid to 11-beta-hydroxy-1-deoxypentalenic acid in the biosynthesis of neopentalenolactone antibiotic.<ref>PMID:16704250</ref> <ref>PMID:17942405</ref>

<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/rd/2rdq_consurf.spt"</scriptWhenChecked>

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== Publication Abstract from PubMed ==

The non-heme iron dioxygenase PtlH from the soil organism Streptomyces avermitilis is a member of the iron(II)/alpha-ketoglutarate-dependent dioxygenase superfamily and catalyzes an essential reaction in the biosynthesis of the sesquiterpenoid antibiotic pentalenolactone. To investigate the structural basis for substrate recognition and catalysis, we have determined the x-ray crystal structure of PtlH in several complexes with the cofactors iron, alpha-ketoglutarate, and the non-reactive enantiomer of the substrate, ent-1-deoxypentalenic acid, in four different crystal forms to up to 1.31 A resolution. The overall structure of PtlH forms a double-stranded barrel helix fold, and the cofactor-binding site for iron and alpha-ketoglutarate is similar to other double-stranded barrel helix fold enzymes. Additional secondary structure elements that contribute to the substrate-binding site in PtlH are not conserved in other double-stranded barrel helix fold enzymes. Binding of the substrate enantiomer induces a reorganization of the monoclinic crystal lattice leading to a disorder-order transition of a C-terminal alpha-helix. The newly formed helix blocks the major access to the active site and effectively traps the bound substrate. Kinetic analysis of wild type and site-directed mutant proteins confirms a critical function of two arginine residues in substrate binding, while simulated docking of the enzymatic reaction product reveals the likely orientation of bound substrate.

Crystal structure of the non-heme iron dioxygenase PtlH in pentalenolactone biosynthesis.,You Z, Omura S, Ikeda H, Cane DE, Jogl G J Biol Chem. 2007 Dec 14;282(50):36552-60. Epub 2007 Oct 16. PMID:17942405<ref>PMID:17942405</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 2rdq" style="background-color:#fffaf0;"></div>

[[Category: Streptomyces avermitilis burg et al. 1979]]

[[Category: Cane, D E]]

[[Category: Ikeda, H]]

[[Category: Jogl, G]]

[[Category: Omura, S]]

[[Category: You, Z]]

[[Category: Oxidoreductase]]