2vbd: Difference between revisions

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{{Seed}}
[[Image:2vbd.jpg|left|200px]]


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==Isopenicillin N synthase with substrate analogue L,L,L-ACOMP (unexposed)==
The line below this paragraph, containing "STRUCTURE_2vbd", creates the "Structure Box" on the page.
<StructureSection load='2vbd' size='340' side='right'caption='[[2vbd]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)  
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[2vbd]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Aspergillus_nidulans Aspergillus nidulans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VBD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2VBD FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</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&#8491;</td></tr>
-->
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=V10:N^6^-[(1R)-2-[(1R)-1-CARBOXY-2-(METHYLSULFANYL)ETHOXY]-2-OXO-1-(SULFANYLMETHYL)ETHYL]-6-OXO-L-LYSINE'>V10</scene></td></tr>
{{STRUCTURE_2vbd| PDB=2vbd |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2vbd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2vbd OCA], [https://pdbe.org/2vbd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2vbd RCSB], [https://www.ebi.ac.uk/pdbsum/2vbd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2vbd ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/IPNA_EMENI IPNA_EMENI] Isopenicillin N synthase; part of the gene cluster that mediates the biosynthesis of penicillin, the world's most important antibiotic (PubMed:3319778, PubMed:11755401). IpnA catalyzes the cyclization of the tripeptide N-[(5S)-5-amino-5-carboxypentanoyl]-L-cysteinyl-D-valine (LLD-ACV or ACV) to form isopenicillin N (IPN) that contains the beta-lactam nucleus (PubMed:3319778, PubMed:11755401, PubMed:28703303). The penicillin biosynthesis occurs via 3 enzymatic steps, the first corresponding to the production of the tripeptide N-[(5S)-5-amino-5-carboxypentanoyl]-L-cysteinyl-D-valine (LLD-ACV or ACV) by the NRPS acvA. The tripeptide ACV is then cyclized to isopenicillin N (IPN) by the isopenicillin N synthase ipnA that forms the beta-lactam nucleus. Finally, the alpha-aminoadipyl side chain is exchanged for phenylacetic acid by the isopenicillin N acyltransferase penDE to yield penicillin in the peroxisomal matrix (By similarity).[UniProtKB:P08703]<ref>PMID:11755401</ref> <ref>PMID:28703303</ref> <ref>PMID:3319778</ref>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/vb/2vbd_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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/main_output.php?pdb_ID=2vbd ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Isopenicillin N synthase (IPNS) is a non-heme iron(ii) oxidase, which catalyses the biosynthesis of isopenicillin N (IPN) from the tripeptide delta-l-alpha-aminoadipoyl-l-cysteinyl-d-valine (lld-ACV) in a remarkable oxidative bicyclisation reaction. The natural substrate for IPNS is the lld-configured tripeptide. lll-ACV is not turned over by the enzyme, but inhibits turnover of the lld-tripeptide. The mechanism by which this inhibition takes place is not fully understood. Recent studies have employed a range of lld-configured depsipeptide substrate analogues in crystallographic studies to probe events preceding beta-lactam closure in the IPNS reaction cycle. Herein, we report the first crystal structure of IPNS in complex with an lll-configured depsipeptide analogue, delta-l-alpha-aminoadipoyl-l-cysteine (1-(R)-carboxy-2-thiomethyl)ethyl ester (lll-ACOmC). This report describes the crystal structure of the IPNS:Fe(ii):lll-ACOmC complex to 2.0 A resolution, and discusses attempts to oxygenate this complex at high pressure in order to probe the mechanism by which lll-configured substrates inhibit IPNS catalysis.


===ISOPENICILLIN N SYNTHASE WITH SUBSTRATE ANALOGUE L,L,L-ACOMP (UNEXPOSED)===
The crystal structure of an LLL-configured depsipeptide substrate analogue bound to isopenicillin N synthase.,Ge W, Clifton IJ, Stok JE, Adlington RM, Baldwin JE, Rutledge PJ Org Biomol Chem. 2010 Jan 7;8(1):122-7. doi: 10.1039/b910170e. Epub 2009 Oct 29. PMID:20024142<ref>PMID:20024142</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2vbd" style="background-color:#fffaf0;"></div>


==About this Structure==
==See Also==
2VBD is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Emericella_nidulans Emericella nidulans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VBD OCA].
*[[Isopenicillin N synthase|Isopenicillin N synthase]]
[[Category: Emericella nidulans]]
== References ==
[[Category: Isopenicillin-N synthase]]
<references/>
[[Category: Single protein]]
__TOC__
[[Category: Adlington, R M.]]
</StructureSection>
[[Category: Baldwin, J E.]]
[[Category: Aspergillus nidulans]]
[[Category: Clifton, I J.]]
[[Category: Large Structures]]
[[Category: Ge, W.]]
[[Category: Adlington RM]]
[[Category: Rutledge, P J.]]
[[Category: Baldwin JE]]
[[Category: Antibiotic biosynthesis]]
[[Category: Clifton IJ]]
[[Category: B-lactam antibiotic]]
[[Category: Ge W]]
[[Category: Iron]]
[[Category: Rutledge PJ]]
[[Category: Metal-binding]]
[[Category: Monocyclic intermediate]]
[[Category: Oxidoreductase]]
[[Category: Oxygenase]]
[[Category: Penicillin biosynthesis]]
[[Category: Vitamin c]]
 
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