7zlj
From Proteopedia
(Difference between revisions)
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[7zlj]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Caenorhabditis_elegans Caenorhabditis elegans] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7ZLJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7ZLJ FirstGlance]. <br> | <table><tr><td colspan='2'>[[7zlj]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Caenorhabditis_elegans Caenorhabditis elegans] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7ZLJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7ZLJ FirstGlance]. <br> | ||
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=IZU:[(2~{R},3~{S},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-3,4,5-tris(oxidanyl)oxan-2-yl]methyl-[(3~{S},6~{E},10~{Z},14~{E})-3,7,11,15,19-pentamethylicosa-6,10,14,18-tetraenoxy]phosphinic+acid'>IZU</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.63Å</td></tr> |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=IZU:[(2~{R},3~{S},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-3,4,5-tris(oxidanyl)oxan-2-yl]methyl-[(3~{S},6~{E},10~{Z},14~{E})-3,7,11,15,19-pentamethylicosa-6,10,14,18-tetraenoxy]phosphinic+acid'>IZU</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=7zlj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7zlj OCA], [https://pdbe.org/7zlj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7zlj RCSB], [https://www.ebi.ac.uk/pdbsum/7zlj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7zlj 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=7zlj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7zlj OCA], [https://pdbe.org/7zlj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7zlj RCSB], [https://www.ebi.ac.uk/pdbsum/7zlj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7zlj ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| - | == | + | <div style="background-color:#fffaf0;"> |
| - | + | == Publication Abstract from PubMed == | |
| + | C-linked glycosylation is essential for the trafficking, folding and function of secretory and transmembrane proteins involved in cellular communication processes. The tryptophan C-mannosyltransferase (CMT) enzymes that install the modification attach a mannose to the first tryptophan of WxxW/C sequons in nascent polypeptide chains by an unknown mechanism. Here, we report cryogenic-electron microscopy structures of Caenorhabditis elegans CMT in four key states: apo, acceptor peptide-bound, donor-substrate analog-bound and as a trapped ternary complex with both peptide and a donor-substrate mimic bound. The structures indicate how the C-mannosylation sequon is recognized by this CMT and its paralogs, and how sequon binding triggers conformational activation of the donor substrate: a process relevant to all glycosyltransferase C superfamily enzymes. Our structural data further indicate that the CMTs adopt an unprecedented electrophilic aromatic substitution mechanism to enable the C-glycosylation of proteins. These results afford opportunities for understanding human disease and therapeutic targeting of specific CMT paralogs. | ||
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| + | Structure, sequon recognition and mechanism of tryptophan C-mannosyltransferase.,Bloch JS, John A, Mao R, Mukherjee S, Boilevin J, Irobalieva RN, Darbre T, Scott NE, Reymond JL, Kossiakoff AA, Goddard-Borger ED, Locher KP Nat Chem Biol. 2023 May;19(5):575-584. doi: 10.1038/s41589-022-01219-9. Epub 2023 , Jan 5. PMID:36604564<ref>PMID:36604564</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 7zlj" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Current revision
Cryo-EM structure of C-mannosyltransferase CeDPY19, in ternary complex with Dol25-P-C-Man and acceptor peptide, bound to CMT2-Fab and anti-Fab nanobody
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