View source for 5lv9


==Crystal structure of thermophilic tryptophan halogenase (Th-Hal) enzyme from Streptomycin violaceusniger.==
<StructureSection load='5lv9' size='340' side='right'caption='[[5lv9]], [[Resolution|resolution]] 2.33&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5lv9]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_violaceusniger Streptomyces violaceusniger]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5LV9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5LV9 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.33&#8491;</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5lv9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5lv9 OCA], [https://pdbe.org/5lv9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5lv9 RCSB], [https://www.ebi.ac.uk/pdbsum/5lv9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5lv9 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/A0A1L1QK36_STRVO A0A1L1QK36_STRVO] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Flavin-dependent halogenase (Fl-Hal) enzymes have been shown to halogenate a range of synthetic as well as natural aromatic compounds. The exquisite regioselectively of Fl-Hal enzymes can provide halogenated building blocks which are inaccessible using standard halogenation chemistries. Consequently, Fl-Hal are potentially useful biocatalysts for the chemoenzymatic synthesis of pharmaceuticals and other valuable products, which are derived from haloaromatic precursors. However, the application of Fl-Hal enzymes, in vitro, has been hampered by their poor catalytic activity and lack of stability. To overcome these issues, we identified a thermophilic tryptophan halogenase (Th-Hal), which has significantly improved catalytic activity and stability, compared with other Fl-Hal characterised to date. When used in combination with a thermostable flavin reductase, Th-Hal can efficiently halogenate a number of aromatic substrates. X-ray crystal structures of Th-Hal, and the reductase partner (Th-Fre), provide insights into the factors that contribute to enzyme stability, which could guide the discovery and engineering of more robust and productive halogenase biocatalysts.

Structure and biocatalytic scope of thermophilic flavin-dependent halogenase and flavin reductase enzymes.,Menon BR, Latham J, Dunstan MS, Brandenburger E, Klemstein U, Leys D, Karthikeyan C, Greaney MF, Shepherd SA, Micklefield J Org Biomol Chem. 2016 Oct 4;14(39):9354-9361. PMID:27714222<ref>PMID:27714222</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5lv9" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Streptomyces violaceusniger]]
[[Category: Dunstan MS]]
[[Category: Menon B]]