2f2l
From Proteopedia
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| - | {{STRUCTURE_2f2l| PDB=2f2l | SCENE= }} | ||
| - | ===Crystal structure of tracheal cytotoxin (TCT) bound to the ectodomain complex of peptidoglycan recognition proteins LCa (PGRP-LCa) and LCx (PGRP-LCx)=== | ||
| - | {{ABSTRACT_PUBMED_16556841}} | ||
| - | == | + | ==Crystal structure of tracheal cytotoxin (TCT) bound to the ectodomain complex of peptidoglycan recognition proteins LCa (PGRP-LCa) and LCx (PGRP-LCx)== |
| - | [[http://www.uniprot.org/uniprot/PGPLC_DROME PGPLC_DROME | + | <StructureSection load='2f2l' size='340' side='right'caption='[[2f2l]], [[Resolution|resolution]] 2.10Å' scene=''> |
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[2f2l]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Drosophila_melanogaster Drosophila melanogaster]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2F2L OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2F2L 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]] 2.1Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=CSO:S-HYDROXYCYSTEINE'>CSO</scene>, <scene name='pdbligand=HSQ:2-(ACETYLAMINO)-2-DEOXY-ALPHA-L-IDOPYRANOSE'>HSQ</scene>, <scene name='pdbligand=MLD:GLCNAC(BETA1-4)-MURNAC(1,6-ANHYDRO)-L-ALA-GAMMA-D-GLU-MESO-A2PM-D-ALA'>MLD</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <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=2f2l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2f2l OCA], [https://pdbe.org/2f2l PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2f2l RCSB], [https://www.ebi.ac.uk/pdbsum/2f2l PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2f2l ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/PGPLC_DROME PGPLC_DROME] Major activator of the imd/Relish pathway and is likely to encode a pattern recognition molecule for the humoral immune response. Required for Relish processing and nuclear translocation following proteolytic cleavage. Involved in the response to lipopolysaccharide (LPS) and peptidoglycan of Gram-negative bacteria. The different isoforms probably display different recognition capabilities to various microbial patterns. Isoform a and isoform x mediate the induction by LPS and Gram-negative bacteria, while isoform x mediates the induction by peptidoglycan.<ref>PMID:11872802</ref> <ref>PMID:12777387</ref> <ref>PMID:16006509</ref> | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/f2/2f2l_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </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/main_output.php?pdb_ID=2f2l ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Tracheal cytotoxin (TCT), a naturally occurring fragment of Gram-negative peptidoglycan, is a potent elicitor of innate immune responses in Drosophila. It induces the heterodimerization of its recognition receptors, the peptidoglycan recognition proteins (PGRPs) LCa and LCx, which activates the immune deficiency pathway. The crystal structure at 2.1 angstrom resolution of TCT in complex with the ectodomains of PGRP-LCa and PGRP-LCx shows that TCT is bound to and presented by the LCx ectodomain for recognition by the LCa ectodomain; the latter lacks a canonical peptidoglycan-docking groove conserved in other PGRPs. The interface, revealed in atomic detail, between TCT and the receptor complex highlights the importance of the anhydro-containing disaccharide in bridging the two ectodomains together and the critical role of diaminopimelic acid as the specificity determinant for PGRP interaction. | ||
| - | + | Structure of tracheal cytotoxin in complex with a heterodimeric pattern-recognition receptor.,Chang CI, Chelliah Y, Borek D, Mengin-Lecreulx D, Deisenhofer J Science. 2006 Mar 24;311(5768):1761-4. PMID:16556841<ref>PMID:16556841</ref> | |
| - | + | ||
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | < | + | </div> |
| + | <div class="pdbe-citations 2f2l" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
[[Category: Drosophila melanogaster]] | [[Category: Drosophila melanogaster]] | ||
| - | [[Category: | + | [[Category: Large Structures]] |
| - | [[Category: | + | [[Category: Chang CI]] |
| - | [[Category: | + | [[Category: Deisenhofer J]] |
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Current revision
Crystal structure of tracheal cytotoxin (TCT) bound to the ectodomain complex of peptidoglycan recognition proteins LCa (PGRP-LCa) and LCx (PGRP-LCx)
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