5dbj: Difference between revisions
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The | ==Crystal structure of halogenase PltA== | ||
<StructureSection load='5dbj' size='340' side='right'caption='[[5dbj]], [[Resolution|resolution]] 2.75Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5dbj]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_protegens_Pf-5 Pseudomonas protegens Pf-5]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5DBJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5DBJ 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]] 2.75Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene></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=5dbj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5dbj OCA], [https://pdbe.org/5dbj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5dbj RCSB], [https://www.ebi.ac.uk/pdbsum/5dbj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5dbj ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/PLTA_PSEF5 PLTA_PSEF5] Involved in the biosynthesis of the antibiotic pyoluteorin (PubMed:16162666). Catalyzes the dichlorination of the pyrrole ring of pyrrolyl-S-PltL, generating the 5-chloropyrrolyl-S-PltL intermediate and then the 4,5-dichloropyrrolyl-S-PltL product (PubMed:16162666).<ref>PMID:16162666</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Pyoluteorin is an antifungal agent composed of a 4,5-dichlorinated pyrrole group linked to a resorcinol moiety. The pyoluteorin biosynthetic gene cluster in Pseudomonas fluorescens Pf-5 encodes the halogenase PltA, which has been previously demonstrated to perform both chlorinations in vitro. PltA selectively accepts as a substrate a pyrrole moiety covalently tethered to a nonribosomal peptide thiolation domain PltL (pyrrolyl-S-PltL) for FAD-dependent di-chlorination, yielding 4,5-dichloropyrrolyl-S-PltL. We report a 2.75A-resolution crystal structure of PltA in complex with FAD and chloride. PltA is a dimeric enzyme, containing a flavin-binding fold conserved in flavin-dependent halogenases and monooxygenases, and an additional unique helical region at the C-terminus. This C-terminal region blocks a putative substrate-binding cleft, suggesting that a conformational change involving repositioning of this region is necessary to allow binding of the pyrrolyl-S-PltL substrate for its dichlorination by PltA. | |||
Crystal structure of halogenase PltA from the pyoluteorin biosynthetic pathway.,Pang AH, Garneau-Tsodikova S, Tsodikov OV J Struct Biol. 2015 Sep 28. pii: S1047-8477(15)30068-X. doi:, 10.1016/j.jsb.2015.09.013. PMID:26416533<ref>PMID:26416533</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: | <div class="pdbe-citations 5dbj" style="background-color:#fffaf0;"></div> | ||
[[Category: Pang | == References == | ||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Pseudomonas protegens Pf-5]] | |||
[[Category: Pang AH]] | |||
[[Category: Tsodikov OV]] | |||
Latest revision as of 08:45, 27 September 2023
Crystal structure of halogenase PltA
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