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2cea

From Proteopedia

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[[Image:2cea.gif|left|200px]]<br /><applet load="2cea" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="2cea, resolution 2.75&Aring;" />
 
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'''WILDTYPE'''<br />
 
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==Overview==
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==CELL DIVISION PROTEIN FTSH==
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The ATP-dependent integral membrane protease FtsH is universally conserved, in bacteria. Orthologs exist in chloroplasts and mitochondria, where in, humans the loss of a close FtsH-homolog causes a form of spastic, paraplegia. FtsH plays a crucial role in quality control by degrading, unneeded or damaged membrane proteins, but it also targets soluble, signaling factors like sigma(32) and lambda-CII. We report here the, crystal structure of a soluble FtsH construct that is functional in, caseinolytic and ATPase assays. The molecular architecture of this, hexameric molecule consists of two rings where the protease domains, possess an all-helical fold and form a flat hexagon that is covered by a, toroid built by the AAA domains. The active site of the protease, classifies FtsH as an Asp-zincin, contrary to a previous report. The, different symmetries of protease and AAA rings suggest a possible, translocation mechanism of the target polypeptide chain into the interior, of the molecule where the proteolytic sites are located.
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<StructureSection load='2cea' size='340' side='right'caption='[[2cea]], [[Resolution|resolution]] 2.75&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2cea]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CEA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2CEA FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.75&#8491;</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=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2cea FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2cea OCA], [https://pdbe.org/2cea PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2cea RCSB], [https://www.ebi.ac.uk/pdbsum/2cea PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2cea ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/FTSH_THEMA FTSH_THEMA] Acts as a processive, ATP-dependent zinc metallopeptidase for both cytoplasmic and membrane proteins. Plays a role in the quality control of integral membrane proteins.[HAMAP-Rule:MF_01458]
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ce/2cea_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=2cea ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The ATP-dependent integral membrane protease FtsH is universally conserved in bacteria. Orthologs exist in chloroplasts and mitochondria, where in humans the loss of a close FtsH-homolog causes a form of spastic paraplegia. FtsH plays a crucial role in quality control by degrading unneeded or damaged membrane proteins, but it also targets soluble signaling factors like sigma(32) and lambda-CII. We report here the crystal structure of a soluble FtsH construct that is functional in caseinolytic and ATPase assays. The molecular architecture of this hexameric molecule consists of two rings where the protease domains possess an all-helical fold and form a flat hexagon that is covered by a toroid built by the AAA domains. The active site of the protease classifies FtsH as an Asp-zincin, contrary to a previous report. The different symmetries of protease and AAA rings suggest a possible translocation mechanism of the target polypeptide chain into the interior of the molecule where the proteolytic sites are located.
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==About this Structure==
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The molecular architecture of the metalloprotease FtsH.,Bieniossek C, Schalch T, Bumann M, Meister M, Meier R, Baumann U Proc Natl Acad Sci U S A. 2006 Feb 28;103(9):3066-71. Epub 2006 Feb 16. PMID:16484367<ref>PMID:16484367</ref>
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2CEA is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima] with <scene name='pdbligand=ZN:'>ZN</scene>, <scene name='pdbligand=MG:'>MG</scene> and <scene name='pdbligand=ADP:'>ADP</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Known structural/functional Site: <scene name='pdbsite=AC1:Mg+Binding+Site+For+Chain+E'>AC1</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CEA OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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The molecular architecture of the metalloprotease FtsH., Bieniossek C, Schalch T, Bumann M, Meister M, Meier R, Baumann U, Proc Natl Acad Sci U S A. 2006 Feb 28;103(9):3066-71. Epub 2006 Feb 16. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=16484367 16484367]
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</div>
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[[Category: Single protein]]
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<div class="pdbe-citations 2cea" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Thermotoga maritima]]
[[Category: Thermotoga maritima]]
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[[Category: Baumann, U.]]
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[[Category: Baumann U]]
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[[Category: Bieniossek, C.]]
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[[Category: Bieniossek C]]
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[[Category: ADP]]
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[[Category: MG]]
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[[Category: ZN]]
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[[Category: cell division]]
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[[Category: cell division protein]]
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[[Category: ftsh]]
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[[Category: metalloprotease]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Feb 3 10:34:21 2008''
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Current revision

CELL DIVISION PROTEIN FTSH

PDB ID 2cea

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