2w03

==CO-COMPLEX STRUCTURE OF ACHROMOBACTIN SYNTHETASE PROTEIN D (ACSD) WITH ADENOSINE, SULFATE AND CITRATE FROM PECTOBACTERIUM CHRYSANTHEMI==

<StructureSection load='2w03' size='340' side='right' caption='[[2w03]], [[Resolution|resolution]] 2.95&Aring;' scene=''>

<table><tr><td colspan='2'>[[2w03]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Erwinia_chrysanthemi Erwinia chrysanthemi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2W03 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2W03 FirstGlance]. <br>

</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ADN:ADENOSINE'>ADN</scene>, <scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene><br>

<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2w02|2w02]], [[2w04|2w04]]</td></tr>

<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2w03 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2w03 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2w03 RCSB], [http://www.ebi.ac.uk/pdbsum/2w03 PDBsum]</span></td></tr>

<table>

<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/w0/2w03_consurf.spt"</scriptWhenChecked>

</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].

<div style="background-color:#fffaf0;">

== Publication Abstract from PubMed ==

Bacterial pathogens need to scavenge iron from their host for growth and proliferation during infection. They have evolved several strategies to do this, one being the biosynthesis and excretion of small, high-affinity iron chelators known as siderophores. The biosynthesis of siderophores is an important area of study, not only for potential therapeutic intervention but also to illuminate new enzyme chemistries. Two general pathways for siderophore biosynthesis exist: the well-characterized nonribosomal peptide synthetase (NRPS)-dependent pathway and the NRPS-independent siderophore (NIS) pathway, which relies on a different family of sparsely investigated synthetases. Here we report structural and biochemical studies of AcsD from Pectobacterium (formerly Erwinia) chrysanthemi, an NIS synthetase involved in achromobactin biosynthesis. The structures of ATP and citrate complexes provide a mechanistic rationale for stereospecific formation of an enzyme-bound (3R)-citryladenylate, which reacts with L-serine to form a likely achromobactin precursor. AcsD is a unique acyladenylate-forming enzyme with a new fold and chemical catalysis strategy.

AcsD catalyzes enantioselective citrate desymmetrization in siderophore biosynthesis.,Schmelz S, Kadi N, McMahon SA, Song L, Oves-Costales D, Oke M, Liu H, Johnson KA, Carter LG, Botting CH, White MF, Challis GL, Naismith JH Nat Chem Biol. 2009 Feb 1. PMID:19182782<ref>PMID:19182782</ref>

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

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== References ==

<references/>

[[Category: Erwinia chrysanthemi]]

[[Category: Carter, L.]]

[[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: Oves-Costales, D.]]

[[Category: Schmelz, S.]]

[[Category: Song, L.]]

[[Category: White, M F.]]

[[Category: Sspf]]