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==Triclinic form of Trypanosoma cruzi trans-sialidase== | ==Triclinic form of Trypanosoma cruzi trans-sialidase== | ||
<StructureSection load='1ms4' size='340' side='right' caption='[[1ms4]], [[Resolution|resolution]] 2.21Å' scene=''> | <StructureSection load='1ms4' size='340' side='right'caption='[[1ms4]], [[Resolution|resolution]] 2.21Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1ms4]] is a 2 chain structure with sequence from [ | <table><tr><td colspan='2'>[[1ms4]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Trypanosoma_cruzi Trypanosoma cruzi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MS4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1MS4 FirstGlance]. <br> | ||
</td></tr><tr><td class="sblockLbl"><b>[[ | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.21Å</td></tr> | ||
<tr | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1ms4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ms4 OCA], [https://pdbe.org/1ms4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ms4 RCSB], [https://www.ebi.ac.uk/pdbsum/1ms4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ms4 ProSAT]</span></td></tr> | ||
</table> | |||
<table> | == Function == | ||
[https://www.uniprot.org/uniprot/Q26966_TRYCR Q26966_TRYCR] | |||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ms/1ms4_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ms/1ms4_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/ | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
</jmolCheckbox> | </jmolCheckbox> | ||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/ | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1ms4 ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
| Line 25: | Line 27: | ||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | </div> | ||
<div class="pdbe-citations 1ms4" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Neuraminidase 3D structures|Neuraminidase 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Trypanosoma cruzi]] | [[Category: Trypanosoma cruzi]] | ||
[[Category: Alzari | [[Category: Alzari PM]] | ||
[[Category: Amaya | [[Category: Amaya MF]] | ||
[[Category: Buschiazzo | [[Category: Buschiazzo A]] | ||
[[Category: Cremona | [[Category: Cremona ML]] | ||
[[Category: Frasch | [[Category: Frasch AC]] | ||
Latest revision as of 10:02, 30 October 2024
Triclinic form of Trypanosoma cruzi trans-sialidaseTriclinic form of Trypanosoma cruzi trans-sialidase
Structural highlights
FunctionEvolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedTrans-sialidases (TS) are GPI-anchored surface enzymes expressed in specific developmental stages of trypanosome parasites like Trypanosoma cruzi, the etiologic agent of Chagas disease, and T. brucei, the causative agent of sleeping sickness. TS catalyzes the transfer of sialic acid residues from host to parasite glycoconjugates through a transglycosidase reaction that appears to be critical for T. cruzi survival and cell invasion capability. We report here the structure of the T. cruzi trans-sialidase, alone and in complex with sugar ligands. Sialic acid binding is shown to trigger a conformational switch that modulates the affinity for the acceptor substrate and concomitantly creates the conditions for efficient transglycosylation. The structure provides a framework for the structure-based design of novel inhibitors with potential therapeutic applications. The crystal structure and mode of action of trans-sialidase, a key enzyme in Trypanosoma cruzi pathogenesis.,Buschiazzo A, Amaya MF, Cremona ML, Frasch AC, Alzari PM Mol Cell. 2002 Oct;10(4):757-68. PMID:12419220[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
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