View source for 6h53


==Crystal structure of Mycobacterium tuberculosis phosphatidylinositol phosphate synthase (PgsA1) in apo form==
<StructureSection load='6h53' size='340' side='right'caption='[[6h53]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6h53]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Myctu Myctu]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6H53 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6H53 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=UPL:UNKNOWN+BRANCHED+FRAGMENT+OF+PHOSPHOLIPID'>UPL</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">pgsA1, Rv2612c ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83332 MYCTU])</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/CDP-diacylglycerol--inositol_3-phosphatidyltransferase CDP-diacylglycerol--inositol 3-phosphatidyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.8.11 2.7.8.11] </span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6h53 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6h53 OCA], [http://pdbe.org/6h53 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6h53 RCSB], [http://www.ebi.ac.uk/pdbsum/6h53 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6h53 ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Tuberculosis causes over one million yearly deaths, and drug resistance is rapidly developing. Mycobacterium tuberculosis phosphatidylinositol phosphate synthase (PgsA1) is an integral membrane enzyme involved in biosynthesis of inositol-derived phospholipids required for formation of the mycobacterial cell wall, and a potential drug target. Here we present three crystal structures of M. tuberculosis PgsA1: in absence of substrates (2.9 A), in complex with Mn(2+) and citrate (1.9 A), and with the CDP-DAG substrate (1.8 A). The structures reveal atomic details of substrate binding as well as coordination and dynamics of the catalytic metal site. In addition, molecular docking supported by mutagenesis indicate a binding mode for the second substrate, D-myo-inositol-3-phosphate. Together, the data describe the structural basis for M. tuberculosis phosphatidylinositol phosphate synthesis and suggest a refined general catalytic mechanism-including a substrate-induced carboxylate shift-for Class I CDP-alcohol phosphotransferases, enzymes essential for phospholipid biosynthesis in all domains of life.

Structure of Mycobacterium tuberculosis phosphatidylinositol phosphate synthase reveals mechanism of substrate binding and metal catalysis.,Grave K, Bennett MD, Hogbom M Commun Biol. 2019 May 8;2:175. doi: 10.1038/s42003-019-0427-1. eCollection 2019. PMID:31098408<ref>PMID:31098408</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6h53" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: CDP-diacylglycerol--inositol 3-phosphatidyltransferase]]
[[Category: Large Structures]]
[[Category: Myctu]]
[[Category: Grave, K]]
[[Category: Hogbom, M]]
[[Category: Phosphotransferase glycerophospholipid metabolism metal binding protein]]
[[Category: Transferase]]