View source for 5x8g


==Binary complex structure of a double mutant I454RA456K of o-Succinylbenzoate CoA Synthetase (MenE) from Bacillus Subtilis bound with its product analogue OSB-NCoA at 1.90 angstrom==
<StructureSection load='5x8g' size='340' side='right'caption='[[5x8g]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5x8g]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis_subsp._subtilis_str._168 Bacillus subtilis subsp. subtilis str. 168]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5X8G OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5X8G 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]] 1.9&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=S0N:O-SUCCINYLBENZOYL-N-COENZYME+A'>S0N</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=5x8g FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5x8g OCA], [https://pdbe.org/5x8g PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5x8g RCSB], [https://www.ebi.ac.uk/pdbsum/5x8g PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5x8g ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/MENE_BACSU MENE_BACSU] Converts 2-succinylbenzoate (OSB) to 2-succinylbenzoyl-CoA (OSB-CoA).[HAMAP-Rule:MF_00731]
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
o-Succinylbenzoyl-CoA (OSB-CoA) synthetase (MenE) is an essential enzyme in bacterial vitamin K biosynthesis and an important target in the development of new antibiotics. It is a member of the adenylating enzymes (ANL) family, which reconfigure their active site in two different active conformations, one for the adenylation half-reaction and the other for a thioesterification half-reaction, in a domain-alternation catalytic mechanism. Although several aspects of the adenylating mechanism in MenE have recently been uncovered, its thioesterification conformation remains elusive. Here, using a catalytically competent Bacillus subtilis mutant protein complexed with an OSB-CoA analogue, we determined MenE high-resolution structures to 1.76 and 1.90 A resolution in a thioester-forming conformation. By comparison with the adenylation conformation, we found that MenE's C-domain rotates around the Ser-384 hinge by 139.5 degrees during domain-alternation catalysis. The structures also revealed a thioesterification active site specifically conserved among MenE orthologues and a substrate-binding mode distinct from those of many other acyl/aryl-CoA synthetases. Of note, using site-directed mutagenesis, we identified several residues that specifically contribute to the thioesterification half-reaction without affecting the adenylation half-reaction. Moreover, we observed a substantial movement of the activated succinyl group in the thioesterification half-reaction. These findings provide new insights into the domain-alternation catalysis of a bacterial enzyme essential for vitamin K biosynthesis and of its adenylating homologues in the ANL enzyme family.

Crystal structure of the thioesterification conformation of Bacillus subtilis o-succinylbenzoyl-CoA synthetase reveals a distinct substrate-binding mode.,Chen Y, Li TL, Lin X, Li X, Li XD, Guo Z J Biol Chem. 2017 Jul 21;292(29):12296-12310. doi: 10.1074/jbc.M117.790410. Epub , 2017 May 30. PMID:28559280<ref>PMID:28559280</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 5x8g" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Bacillus subtilis subsp. subtilis str. 168]]
[[Category: Large Structures]]
[[Category: Chen Y]]
[[Category: Guo Z]]