View source for 7r27


==Crystal structure of the L. plantarum D-alanine ligase DltA==
<StructureSection load='7r27' size='340' side='right'caption='[[7r27]], [[Resolution|resolution]] 2.01&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7r27]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Lactiplantibacillus_plantarum_subsp._plantarum_NC8 Lactiplantibacillus plantarum subsp. plantarum NC8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7R27 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7R27 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]] 2.01&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=DAL:D-ALANINE'>DAL</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=7r27 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7r27 OCA], [https://pdbe.org/7r27 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7r27 RCSB], [https://www.ebi.ac.uk/pdbsum/7r27 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7r27 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/A0A151G8K4_LACPN A0A151G8K4_LACPN] Catalyzes the first step in the D-alanylation of lipoteichoic acid (LTA), the activation of D-alanine and its transfer onto the D-alanyl carrier protein (Dcp) DltC. In an ATP-dependent two-step reaction, forms a high energy D-alanyl-AMP intermediate, followed by transfer of the D-alanyl residue as a thiol ester to the phosphopantheinyl prosthetic group of the Dcp. D-alanylation of LTA plays an important role in modulating the properties of the cell wall in Gram-positive bacteria, influencing the net charge of the cell wall.[HAMAP-Rule:MF_00593]
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Teichoic acids (TA) are crucial for the homeostasis of the bacterial cell wall as well as their developmental behavior and interplay with the environment. TA can be decorated by different modifications, modulating thus their biochemical properties. One major modification consists in the esterification of TA by D-alanine, a process known as D-alanylation. TA D-alanylation is performed by the Dlt pathway, which starts in the cytoplasm and continues extracellularly after D-Ala transportation through the membrane. In this study, we combined structural biology and in vivo approaches to dissect the cytoplasmic steps of this pathway in Lactiplantibacillus plantarum, a bacterial species conferring health benefits to its animal host. After establishing that AcpS, DltB, DltC1 and DltA are required for the promotion of Drosophila juvenile growth under chronic undernutrition, we solved their crystal structure and/or used NMR and molecular modeling to study their interactions. Our work demonstrates that the suite of interactions between these proteins is ordered with a conserved surface of DltC1 docking sequentially AcpS, DltA and eventually DltB. Altogether, we conclude that DltC1 acts as an interaction hub for all the successive cytoplasmic steps of the TA D-alanylation pathway.

DltC acts as an interaction hub for AcpS, DltA and DltB in the teichoic acid D-alanylation pathway of Lactiplantibacillus plantarum.,Nikolopoulos N, Matos RC, Courtin P, Ayala I, Akherraz H, Simorre JP, Chapot-Chartier MP, Leulier F, Ravaud S, Grangeasse C Sci Rep. 2022 Jul 30;12(1):13133. doi: 10.1038/s41598-022-17434-2. PMID:35907949<ref>PMID:35907949</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7r27" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Lactiplantibacillus plantarum subsp. plantarum NC8]]
[[Category: Large Structures]]
[[Category: Grangeasse C]]
[[Category: Nikolopoulos N]]
[[Category: Ravaud S]]
[[Category: Simorre JP]]