View source for 1rjn


==The Crystal Structure of MenB (Rv0548c) from Mycobacterium tuberculosis in Complex with the CoA Portion of Naphthoyl CoA==
<StructureSection load='1rjn' size='340' side='right'caption='[[1rjn]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1rjn]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RJN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RJN 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]] 2.3&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=COA:COENZYME+A'>COA</scene>, <scene name='pdbligand=EP1:3-[4-(2-HYDROXYETHYL)PIPERAZIN-1-YL]PROPANE-1-SULFONIC+ACID'>EP1</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=1rjn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rjn OCA], [https://pdbe.org/1rjn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rjn RCSB], [https://www.ebi.ac.uk/pdbsum/1rjn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rjn ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/MENB_MYCTU MENB_MYCTU] Converts o-succinylbenzoyl-CoA (OSB-CoA) to 1,4-dihydroxy-2-naphthoyl-CoA (DHNA-CoA).<ref>PMID:12909628</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/rj/1rjn_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=1rjn ConSurf].
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== Publication Abstract from PubMed ==
Mycobacterium tuberculosis, the cause of tuberculosis, is one of the most devastating human pathogens. New drugs for its control are urgently needed. Menaquinone, also known as vitamin K, is an essential cofactor that is required for electron transfer and the enzymes that synthesize it are therefore potential drug targets. The enzyme naphthoate synthase (MenB) from M. tuberculosis has been expressed in Escherichia coli, purified and crystallized both as the native enzyme and in complex with naphthoyl-CoA. Both structures have been determined by X-ray crystallography: native MenB at 2.15 A resolution (R = 0.203, R(free) = 0.231) and its napthoyl-CoA complex at 2.30 A resolution (R = 0.197, R(free) = 0.225). The protein structure, which has a fold characteristic of the crotonase family of enzymes, is notable for the presence of several highly flexible regions around the active site. The bound naphthoyl-CoA is only visible for one of the three molecules in the asymmetric unit and only partly rigidifies the structure. The C-terminal region of the protein is seen to play a critical role both in completion of the binding pocket and in stabilization of the hexamer, suggesting a link between oligomerization and catalytic activity.

Structure of naphthoate synthase (MenB) from Mycobacterium tuberculosis in both native and product-bound forms.,Johnston JM, Arcus VL, Baker EN Acta Crystallogr D Biol Crystallogr. 2005 Sep;61(Pt 9):1199-206. Epub 2005, Aug 16. PMID:16131752<ref>PMID:16131752</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: Mycobacterium tuberculosis]]
[[Category: Arcus VL]]
[[Category: Baker EN]]
[[Category: Johnston JM]]