8ui6

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'''Unreleased structure'''
 
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The entry 8ui6 is ON HOLD
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==X-ray crystal structure of Toxoplasma gondii GalNAc-T3 in complex with UDP-GalNAc, Mn2+, and Muc5AC-3,13==
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<StructureSection load='8ui6' size='340' side='right'caption='[[8ui6]], [[Resolution|resolution]] 2.65&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[8ui6]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Toxoplasma_gondii_ME49 Toxoplasma gondii ME49]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8UI6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8UI6 FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.65&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=A2G:N-ACETYL-2-DEOXY-2-AMINO-GALACTOSE'>A2G</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene>, <scene name='pdbligand=UDP:URIDINE-5-DIPHOSPHATE'>UDP</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=8ui6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8ui6 OCA], [https://pdbe.org/8ui6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8ui6 RCSB], [https://www.ebi.ac.uk/pdbsum/8ui6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8ui6 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/A0A125YMZ8_TOXGM A0A125YMZ8_TOXGM]
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Infection with the apicomplexan protozoan Toxoplasma gondii can be life-threatening in immunocompromised hosts. Transmission frequently occurs through the oral ingestion of T. gondii bradyzoite cysts, which transition to tachyzoites, disseminate, and then form cysts containing bradyzoites in the central nervous system, resulting in latent infection. Encapsulation of bradyzoites by a cyst wall is critical for immune evasion, survival, and transmission. O-glycosylation of the protein CST1 by the mucin-type O-glycosyltransferase T. gondii (Txg) GalNAc-T3 influences cyst wall rigidity and stability. Here, we report X-ray crystal structures of TxgGalNAc-T3, revealing multiple features that are strictly conserved among its apicomplexan homologues. This includes a unique 2(nd) metal that is coupled to substrate binding and enzymatic activity in vitro and cyst wall O-glycosylation in T. gondii. The study illustrates the divergence of pathogenic protozoan GalNAc-Ts from their host homologues and lays the groundwork for studying apicomplexan GalNAc-Ts as therapeutic targets in disease.
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Authors: Kumar, P., Samara, N.L.
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A Toxoplasma gondii O-glycosyltransferase that modulates bradyzoite cyst wall rigidity is distinct from host homologues.,Kumar P, Tomita T, Gerken TA, Ballard CJ, Lee YS, Weiss LM, Samara NL Nat Commun. 2024 May 6;15(1):3792. doi: 10.1038/s41467-024-48253-w. PMID:38710711<ref>PMID:38710711</ref>
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Description: X-ray crystal structure of Toxoplasma gondii GalNAc-T3 in complex with UDP-GalNAc, Mn2+, and Muc5AC-3,13
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[Category: Unreleased Structures]]
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</div>
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[[Category: Samara, N.L]]
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<div class="pdbe-citations 8ui6" style="background-color:#fffaf0;"></div>
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[[Category: Kumar, P]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Homo sapiens]]
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[[Category: Large Structures]]
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[[Category: Toxoplasma gondii ME49]]
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[[Category: Kumar P]]
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[[Category: Samara NL]]

Current revision

X-ray crystal structure of Toxoplasma gondii GalNAc-T3 in complex with UDP-GalNAc, Mn2+, and Muc5AC-3,13

PDB ID 8ui6

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