7vcf
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | + | ==Cryo-EM structure of Chlamydomonas TOC-TIC supercomplex== | |
| + | <StructureSection load='7vcf' size='340' side='right'caption='[[7vcf]], [[Resolution|resolution]] 2.50Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[7vcf]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Chlamydomonas_reinhardtii Chlamydomonas reinhardtii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7VCF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7VCF FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.5Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=IHP:INOSITOL+HEXAKISPHOSPHATE'>IHP</scene>, <scene name='pdbligand=LMG:1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE'>LMG</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</scene>, <scene name='pdbligand=TPO:PHOSPHOTHREONINE'>TPO</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=7vcf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7vcf OCA], [https://pdbe.org/7vcf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7vcf RCSB], [https://www.ebi.ac.uk/pdbsum/7vcf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7vcf ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | The TOC and TIC complexes are essential translocons that facilitate the import of the nuclear genome-encoded preproteins across the two envelope membranes of chloroplast, but their exact molecular identities and assembly remain unclear. Here, we report a cryoelectron microscopy structure of TOC-TIC supercomplex from Chlamydomonas, containing a total of 14 identified components. The preprotein-conducting pore of TOC is a hybrid beta-barrel co-assembled by Toc120 and Toc75, while the potential translocation path of TIC is formed by transmembrane helices from Tic20 and YlmG, rather than a classic model of Tic110. A rigid intermembrane space (IMS) scaffold bridges two chloroplast membranes, and a large hydrophilic cleft on the IMS scaffold connects TOC and TIC, forming a pathway for preprotein translocation. Our study provides structural insights into the TOC-TIC supercomplex composition, assembly, and preprotein translocation mechanism, and lays a foundation to interpret the evolutionary conservation and diversity of this fundamental translocon machinery. | ||
| - | + | Structure of a TOC-TIC supercomplex spanning two chloroplast envelope membranes.,Jin Z, Wan L, Zhang Y, Li X, Cao Y, Liu H, Fan S, Cao D, Wang Z, Li X, Pan J, Dong MQ, Wu J, Yan Z Cell. 2022 Dec 8;185(25):4788-4800.e13. doi: 10.1016/j.cell.2022.10.030. Epub , 2022 Nov 21. PMID:36413996<ref>PMID:36413996</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| + | <div class="pdbe-citations 7vcf" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Chlamydomonas reinhardtii]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Jin Z]] | ||
| + | [[Category: Wu J]] | ||
| + | [[Category: Yan Z]] | ||
| + | [[Category: Zhang Y]] | ||
Current revision
Cryo-EM structure of Chlamydomonas TOC-TIC supercomplex
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