1okk
From Proteopedia
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| - | [[ | + | ==HOMO-HETERODIMERIC COMPLEX OF THE SRP GTPASES== |
| + | <StructureSection load='1okk' size='340' side='right' caption='[[1okk]], [[Resolution|resolution]] 2.05Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[1okk]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermus_aquaticus Thermus aquaticus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1OKK OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1OKK FirstGlance]. <br> | ||
| + | </td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BZP:N1-CARBOXYPIPERAZINE'>BZP</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=GCP:PHOSPHOMETHYLPHOSPHONIC+ACID+GUANYLATE+ESTER'>GCP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene><br> | ||
| + | <tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1ffh|1ffh]], [[1jpj|1jpj]], [[1jpn|1jpn]], [[1ls1|1ls1]], [[1ng1|1ng1]], [[1o87|1o87]], [[1rj9|1rj9]], [[2ffh|2ffh]], [[2ng1|2ng1]], [[3ng1|3ng1]]</td></tr> | ||
| + | <tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1okk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1okk OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1okk RCSB], [http://www.ebi.ac.uk/pdbsum/1okk PDBsum]</span></td></tr> | ||
| + | <table> | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ok/1okk_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </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/chain_selection.php?pdb_ID=2ata ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Two structurally homologous guanosine triphosphatase (GTPase) domains interact directly during signal recognition particle (SRP)-mediated cotranslational targeting of proteins to the membrane. The 2.05 angstrom structure of a complex of the NG GTPase domains of Ffh and FtsY reveals a remarkably symmetric heterodimer sequestering a composite active site that contains two bound nucleotides. The structure explains the coordinate activation of the two GTPases. Conformational changes coupled to formation of their extensive interface may function allosterically to signal formation of the targeting complex to the signal-sequence binding site and the translocon. We propose that the complex represents a molecular "latch" and that its disengagement is regulated by completion of assembly of the GTPase active site. | ||
| - | + | Heterodimeric GTPase core of the SRP targeting complex.,Focia PJ, Shepotinovskaya IV, Seidler JA, Freymann DM Science. 2004 Jan 16;303(5656):373-7. PMID:14726591<ref>PMID:14726591</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
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==See Also== | ==See Also== | ||
*[[Signal recognition particle protein|Signal recognition particle protein]] | *[[Signal recognition particle protein|Signal recognition particle protein]] | ||
| - | + | *[[Signal recognition particle receptor|Signal recognition particle receptor]] | |
| - | == | + | == References == |
| - | < | + | <references/> |
| + | __TOC__ | ||
| + | </StructureSection> | ||
[[Category: Thermus aquaticus]] | [[Category: Thermus aquaticus]] | ||
[[Category: Focia, P J.]] | [[Category: Focia, P J.]] | ||
Revision as of 13:53, 28 September 2014
HOMO-HETERODIMERIC COMPLEX OF THE SRP GTPASES
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