4x7p: Difference between revisions

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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4x7p]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus_subsp._aureus_21178 Staphylococcus aureus subsp. aureus 21178]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4X7P OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4X7P FirstGlance]. <br>
<table><tr><td colspan='2'>[[4x7p]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus_subsp._aureus_21178 Staphylococcus aureus subsp. aureus 21178]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4X7P OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4X7P FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.4&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=4x7p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4x7p OCA], [https://pdbe.org/4x7p PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4x7p RCSB], [https://www.ebi.ac.uk/pdbsum/4x7p PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4x7p ProSAT]</span></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=4x7p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4x7p OCA], [https://pdbe.org/4x7p PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4x7p RCSB], [https://www.ebi.ac.uk/pdbsum/4x7p PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4x7p ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[https://www.uniprot.org/uniprot/TARM_STAAC TARM_STAAC] Attaches N-acetyl-alpha-D-glucosamine residues to poly(RboP)-wall teichoic acids (WTAs).<ref>PMID:20185825</ref> <ref>PMID:25624472</ref> <ref>PMID:25697358</ref>  
[https://www.uniprot.org/uniprot/TARM_STAAC TARM_STAAC] Attaches N-acetyl-alpha-D-glucosamine residues to poly(RboP)-wall teichoic acids (WTAs).<ref>PMID:20185825</ref> <ref>PMID:25624472</ref> <ref>PMID:25697358</ref>  
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Unique to Gram-positive bacteria, wall teichoic acids are anionic glycopolymers cross-stitched to a thick layer of peptidoglycan. The polyol phosphate subunits of these glycopolymers are decorated with GlcNAc sugars that are involved in phage binding, genetic exchange, host antibody response, resistance, and virulence. The search for the enzymes responsible for GlcNAcylation in Staphylococcus aureus has recently identified TarM and TarS with respective alpha- and beta-(1-4) glycosyltransferase activities. The stereochemistry of the GlcNAc attachment is important in balancing biological processes, such that the interplay of TarM and TarS is likely important for bacterial pathogenicity and survival. Here we present the crystal structure of TarM in an unusual ternary-like complex consisting of a polymeric acceptor substrate analog, UDP from a hydrolyzed donor, and an alpha-glyceryl-GlcNAc product formed in situ. These structures support an internal nucleophilic substitution-like mechanism, lend new mechanistic insight into the glycosylation of glycopolymers, and reveal a trimerization domain with a likely role in acceptor substrate scaffolding.
Structure and mechanism of Staphylococcus aureus TarM, the wall teichoic acid alpha-glycosyltransferase.,Sobhanifar S, Worrall LJ, Gruninger RJ, Wasney GA, Blaukopf M, Baumann L, Lameignere E, Solomonson M, Brown ED, Withers SG, Strynadka NC Proc Natl Acad Sci U S A. 2015 Feb 10;112(6):E576-85. doi:, 10.1073/pnas.1418084112. Epub 2015 Jan 26. PMID:25624472<ref>PMID:25624472</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4x7p" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>

Latest revision as of 16:00, 1 March 2024

Crystal structure of apo S. aureus TarMCrystal structure of apo S. aureus TarM

Structural highlights

4x7p is a 2 chain structure with sequence from Staphylococcus aureus subsp. aureus 21178. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 3.4Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

TARM_STAAC Attaches N-acetyl-alpha-D-glucosamine residues to poly(RboP)-wall teichoic acids (WTAs).[1] [2] [3]

References

  1. ↑ Xia G, Maier L, Sanchez-Carballo P, Li M, Otto M, Holst O, Peschel A. Glycosylation of wall teichoic acid in Staphylococcus aureus by TarM. J Biol Chem. 2010 Apr 30;285(18):13405-15. PMID:20185825 doi:10.1074/jbc.M109.096172
  2. ↑ Sobhanifar S, Worrall LJ, Gruninger RJ, Wasney GA, Blaukopf M, Baumann L, Lameignere E, Solomonson M, Brown ED, Withers SG, Strynadka NC. Structure and mechanism of Staphylococcus aureus TarM, the wall teichoic acid alpha-glycosyltransferase. Proc Natl Acad Sci U S A. 2015 Feb 10;112(6):E576-85. doi:, 10.1073/pnas.1418084112. Epub 2015 Jan 26. PMID:25624472 doi:http://dx.doi.org/10.1073/pnas.1418084112
  3. ↑ Koc C, Gerlach D, Beck S, Peschel A, Xia G, Stehle T. Structural and enzymatic analysis of TarM from Staphylococcus aureus reveals an oligomeric protein specific for the glycosylation of wall teichoic acid. J Biol Chem. 2015 Feb 19. pii: jbc.M114.619924. PMID:25697358 doi:http://dx.doi.org/10.1074/jbc.M114.619924

4x7p, resolution 3.40Å

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