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| - | [[Image:2guz.gif|left|200px]] | |
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| - | <!--
| + | ==Structure of the Tim14-Tim16 complex of the mitochondrial protein import motor== |
| - | The line below this paragraph, containing "STRUCTURE_2guz", creates the "Structure Box" on the page.
| + | <StructureSection load='2guz' size='340' side='right'caption='[[2guz]], [[Resolution|resolution]] 2.00Å' scene=''> |
| - | You may change the PDB parameter (which sets the PDB file loaded into the applet)
| + | == Structural highlights == |
| - | or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
| + | <table><tr><td colspan='2'>[[2guz]] is a 16 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GUZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2GUZ FirstGlance]. <br> |
| - | or leave the SCENE parameter empty for the default display.
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2Å</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=FLC:CITRATE+ANION'>FLC</scene></td></tr> |
| - | {{STRUCTURE_2guz| PDB=2guz | SCENE= }}
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2guz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2guz OCA], [https://pdbe.org/2guz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2guz RCSB], [https://www.ebi.ac.uk/pdbsum/2guz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2guz ProSAT]</span></td></tr> |
| - | | + | </table> |
| - | '''Structure of the Tim14-Tim16 complex of the mitochondrial protein import motor'''
| + | == Function == |
| - | | + | [https://www.uniprot.org/uniprot/TIM14_YEAST TIM14_YEAST] Essential component of the PAM complex, a complex required for the translocation of transit peptide-containing proteins from the inner membrane into the mitochondrial matrix in an ATP-dependent manner. In the complex, it is required to stimulate activity of mtHSP70 (SSC1).<ref>PMID:14517234</ref> <ref>PMID:14638855</ref> <ref>PMID:14605210</ref> |
| - | | + | == Evolutionary Conservation == |
| - | ==Overview== | + | [[Image:Consurf_key_small.gif|200px|right]] |
| - | The import motor of the mitochondrial translocase of the inner membrane (TIM23) mediates the ATP-dependent translocation of preproteins into the mitochondrial matrix by cycles of binding to and release from mtHsp70. An essential step of this process is the stimulation of the ATPase activity of mtHsp70 performed by the J cochaperone Tim14. Tim14 forms a complex with the J-like protein Tim16. The crystal structure of this complex shows that the conserved domains of the two proteins have virtually identical folds but completely different surfaces enabling them to perform different functions. The Tim14-Tim16 dimer reveals a previously undescribed arrangement of J and J-like domains. Mutations that destroy the complex between Tim14 and Tim16 are lethal demonstrating that complex formation is an essential requirement for the viability of cells. We further demonstrate tight regulation of the cochaperone activity of Tim14 by Tim16. The first crystal structure of a J domain in complex with a regulatory protein provides new insights into the function of the mitochondrial TIM23 translocase and the Hsp70 chaperone system in general.
| + | Check<jmol> |
| - | | + | <jmolCheckbox> |
| - | ==About this Structure== | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/gu/2guz_consurf.spt"</scriptWhenChecked> |
| - | 2GUZ is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GUZ OCA].
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> |
| - | | + | <text>to colour the structure by Evolutionary Conservation</text> |
| - | ==Reference== | + | </jmolCheckbox> |
| - | Structure and function of Tim14 and Tim16, the J and J-like components of the mitochondrial protein import motor., Mokranjac D, Bourenkov G, Hell K, Neupert W, Groll M, EMBO J. 2006 Oct 4;25(19):4675-85. Epub 2006 Sep 14. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16977310 16977310]
| + | </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=2guz ConSurf]. |
| - | [[Category: Protein complex]] | + | <div style="clear:both"></div> |
| | + | == References == |
| | + | <references/> |
| | + | __TOC__ |
| | + | </StructureSection> |
| | + | [[Category: Large Structures]] |
| | [[Category: Saccharomyces cerevisiae]] | | [[Category: Saccharomyces cerevisiae]] |
| - | [[Category: Bourenkov, G.]] | + | [[Category: Bourenkov G]] |
| - | [[Category: Groll, M.]] | + | [[Category: Groll M]] |
| - | [[Category: Hell, K.]] | + | [[Category: Hell K]] |
| - | [[Category: Mokranjac, D.]] | + | [[Category: Mokranjac D]] |
| - | [[Category: Neupert, W.]] | + | [[Category: Neupert W]] |
| - | [[Category: Dnaj-fold]]
| + | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 05:34:09 2008''
| + | |
| Structural highlights
Function
TIM14_YEAST Essential component of the PAM complex, a complex required for the translocation of transit peptide-containing proteins from the inner membrane into the mitochondrial matrix in an ATP-dependent manner. In the complex, it is required to stimulate activity of mtHSP70 (SSC1).[1] [2] [3]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
References
- ↑ Mokranjac D, Sichting M, Neupert W, Hell K. Tim14, a novel key component of the import motor of the TIM23 protein translocase of mitochondria. EMBO J. 2003 Oct 1;22(19):4945-56. PMID:14517234 doi:http://dx.doi.org/10.1093/emboj/cdg485
- ↑ Truscott KN, Voos W, Frazier AE, Lind M, Li Y, Geissler A, Dudek J, Muller H, Sickmann A, Meyer HE, Meisinger C, Guiard B, Rehling P, Pfanner N. A J-protein is an essential subunit of the presequence translocase-associated protein import motor of mitochondria. J Cell Biol. 2003 Nov 24;163(4):707-13. PMID:14638855 doi:http://dx.doi.org/10.1083/jcb.200308004
- ↑ D'Silva PD, Schilke B, Walter W, Andrew A, Craig EA. J protein cochaperone of the mitochondrial inner membrane required for protein import into the mitochondrial matrix. Proc Natl Acad Sci U S A. 2003 Nov 25;100(24):13839-44. Epub 2003 Nov 6. PMID:14605210 doi:http://dx.doi.org/10.1073/pnas.1936150100
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