View source for 6enk


==The X-ray crystal structure of DesE bound to desferrioxamine B==
<StructureSection load='6enk' size='340' side='right'caption='[[6enk]], [[Resolution|resolution]] 1.96&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6enk]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6ENK OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6ENK FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BJ5:desferrioxamine+B'>BJ5</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2x4l|2x4l]]</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6enk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6enk OCA], [http://pdbe.org/6enk PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6enk RCSB], [http://www.ebi.ac.uk/pdbsum/6enk PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6enk ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
Hydroxamate groups play key roles in the biological function of diverse natural products. Important examples include trichostatin A, which inhibits histone deacetylases via coordination of the active site zinc(II) ion with a hydroxamate group, and the desferrioxamines, which use three hydroxamate groups to chelate ferric iron. Desferrioxamine biosynthesis in Streptomyces species involves the DesD-catalysed condensation of various N-acylated derivatives of N-hydroxycadaverine with two molecules of N-succinyl-N-hydroxycadaverine to form a range of linear and macrocyclic tris-hydroxamates. However, the mechanism for assembly of the various N-acyl-N-hydroxycadaverine substrates of DesD from N-hydroxycadaverine has until now been unclear. Here we show that the desC gene of Streptomyces coelicolor encodes the acyl transferase responsible for this process. DesC catalyses the N-acylation of N-hydroxycadaverine with acetyl, succinyl and myristoyl-CoA, accounting for the diverse array of desferrioxamines produced by S. coelicolor The X-ray crystal structure of DesE, the ferrioxamine lipoprotein receptor, in complex with ferrioxamine B (which is derived from two units of N-succinyl-N-hydroxycadaverine and one of N-acetyl-N-hydroxycadaverine) was also determined. This showed that the acetyl group of ferrioxamine B is solvent exposed, suggesting that the corresponding acyl group in longer chain congeners can protrude from the binding pocket, providing insights into their likely function. This article is part of a discussion meeting issue 'Frontiers in epigenetic chemical biology'.This article is part of a discussion meeting issue 'Frontiers in epigenetic chemical biology'.

Desferrioxamine biosynthesis: diverse hydroxamate assembly by substrate-tolerant acyl transferase DesC.,Ronan JL, Kadi N, McMahon SA, Naismith JH, Alkhalaf LM, Challis GL Philos Trans R Soc Lond B Biol Sci. 2018 Jun 5;373(1748). pii: rstb.2017.0068., doi: 10.1098/rstb.2017.0068. PMID:29685972<ref>PMID:29685972</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Carter, L G]]
[[Category: Challis, G L]]
[[Category: Johnson, K A]]
[[Category: Kadi, N]]
[[Category: Liu, H]]
[[Category: McMahon, S A]]
[[Category: Naismith, J H]]
[[Category: Oke, M]]
[[Category: Acetyltransferase siderophore]]
[[Category: Transferase]]