3din
From Proteopedia
(Difference between revisions)
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==Crystal structure of the protein-translocation complex formed by the SecY channel and the SecA ATPase== | ==Crystal structure of the protein-translocation complex formed by the SecY channel and the SecA ATPase== | ||
| - | <StructureSection load='3din' size='340' side='right' caption='[[3din]], [[Resolution|resolution]] 4.50Å' scene=''> | + | <StructureSection load='3din' size='340' side='right'caption='[[3din]], [[Resolution|resolution]] 4.50Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[3din]] is a 8 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[3din]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Thema Thema] and [https://en.wikipedia.org/wiki/Thesq Thesq]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3DIN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3DIN FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=BEF:BERYLLIUM+TRIFLUORIDE+ION'>BEF</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | + | </td></tr><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=BEF:BERYLLIUM+TRIFLUORIDE+ION'>BEF</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">secA, TM_1578 ([ | + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">secA, TM_1578 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=243274 THEMA]), secY, TM_1480 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=243274 THEMA]), secE, TM_0452 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=243274 THEMA]), secG, TRQ2_0456 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=126740 THESQ])</td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3din FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3din OCA], [https://pdbe.org/3din PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3din RCSB], [https://www.ebi.ac.uk/pdbsum/3din PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3din ProSAT]</span></td></tr> |
</table> | </table> | ||
== Function == | == Function == | ||
| - | [[ | + | [[https://www.uniprot.org/uniprot/SECA_THEMA SECA_THEMA]] Part of the Sec protein translocase complex. Interacts with the SecYEG preprotein conducting channel. Has a central role in coupling the hydrolysis of ATP to the transfer of proteins into and across the cell membrane, serving as an ATP-driven molecular motor driving the stepwise translocation of polypeptide chains across the membrane (By similarity). [[https://www.uniprot.org/uniprot/SECE_THEMA SECE_THEMA]] Essential subunit of the protein translocation channel SecYEG. Clamps together the 2 halves of SecY. May contact the channel plug during translocation. [[https://www.uniprot.org/uniprot/SECY_THEMA SECY_THEMA]] The central subunit of the protein translocation channel SecYEG. Consists of two halves formed by TMs 1-5 and 6-10. These two domains form a lateral gate at the front which open onto the bilayer between TMs 2 and 7, and are clamped together by SecE at the back. The channel is closed by both a pore ring composed of hydrophobic SecY resides and a short helix (helix 2A) on the extracellular side of the membrane which forms a plug. The plug probably moves laterally to allow the channel to open. The ring and the pore may move independently. |
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/di/3din_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/di/3din_consurf.spt"</scriptWhenChecked> |
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
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</div> | </div> | ||
<div class="pdbe-citations 3din" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 3din" style="background-color:#fffaf0;"></div> | ||
| + | |||
| + | ==See Also== | ||
| + | *[[Preprotein translocase|Preprotein translocase]] | ||
| + | *[[SecA|SecA]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
[[Category: Thema]] | [[Category: Thema]] | ||
[[Category: Thesq]] | [[Category: Thesq]] | ||
Revision as of 07:59, 9 February 2022
Crystal structure of the protein-translocation complex formed by the SecY channel and the SecA ATPase
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