1ozb
From Proteopedia
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==Crystal Structure of SecB complexed with SecA C-terminus== | ==Crystal Structure of SecB complexed with SecA C-terminus== | ||
- | <StructureSection load='1ozb' size='340' side='right' caption='[[1ozb]], [[Resolution|resolution]] 2.80Å' scene=''> | + | <StructureSection load='1ozb' size='340' side='right'caption='[[1ozb]], [[Resolution|resolution]] 2.80Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
- | <table><tr><td colspan='2'>[[1ozb]] is a 10 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[1ozb]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Haemophilus_influenzae Haemophilus influenzae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1OZB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1OZB FirstGlance]. <br> |
- | </td></tr><tr><td class="sblockLbl"><b>[[ | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8Å</td></tr> |
- | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | |
- | <tr><td class="sblockLbl"><b>[[ | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1ozb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ozb OCA], [https://pdbe.org/1ozb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ozb RCSB], [https://www.ebi.ac.uk/pdbsum/1ozb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ozb ProSAT]</span></td></tr> |
- | <tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | </table> |
- | <table> | + | == Function == |
+ | [https://www.uniprot.org/uniprot/SECB_HAEIN SECB_HAEIN] One of the proteins required for the normal export of preproteins out of the cell cytoplasm. It is a molecular chaperone that binds to a subset of precursor proteins, maintaining them in a translocation-competent state. It also specifically binds to its receptor SecA. | ||
== 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/oz/1ozb_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/oz/1ozb_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> | ||
</jmolCheckbox> | </jmolCheckbox> | ||
- | </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/ | + | </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=1ozb ConSurf]. |
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
- | <div style="background-color:#fffaf0;"> | ||
- | == Publication Abstract from PubMed == | ||
- | SecB is a bacterial chaperone involved in directing pre-protein to the translocation pathway by its specific interaction with the peripheral membrane ATPase SecA. The SecB-binding site on SecA is located at its C terminus and consists of a stretch of highly conserved residues. The crystal structure of SecB in complex with the C-terminal 27 amino acids of SecA from Haemophilus influenzae shows that the SecA peptide is structured as a CCCH zinc-binding motif. One SecB tetramer is bound by two SecA peptides, and the interface involves primarily salt bridges and hydrogen bonding interactions. The structure explains the importance of the zinc-binding motif and conserved residues at the C terminus of SecA in its high-affinity binding with SecB. It also suggests a model of SecB-SecA interaction and its implication for the mechanism of pre-protein transfer in bacterial protein translocation. | ||
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- | Structural determinants of SecB recognition by SecA in bacterial protein translocation.,Zhou J, Xu Z Nat Struct Biol. 2003 Nov;10(11):942-7. Epub 2003 Sep 28. PMID:14517549<ref>PMID:14517549</ref> | ||
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- | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
- | </div> | ||
==See Also== | ==See Also== | ||
- | *[[Preprotein translocase|Preprotein translocase]] | + | *[[Preprotein translocase 3D structures|Preprotein translocase 3D structures]] |
*[[SecA|SecA]] | *[[SecA|SecA]] | ||
- | == References == | ||
- | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Haemophilus influenzae]] | [[Category: Haemophilus influenzae]] | ||
- | [[Category: | + | [[Category: Large Structures]] |
- | [[Category: | + | [[Category: Xu Z]] |
- | [[Category: | + | [[Category: Zhou J]] |
- | + | ||
- | + |
Current revision
Crystal Structure of SecB complexed with SecA C-terminus
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