1zn0: Difference between revisions

From Proteopedia
Jump to navigation Jump to search
← Older edit
No edit summary
No edit summary
 
(8 intermediate revisions by the same user not shown)
Line 1: Line 1:
==Coordinates of RRF and EF-G fitted into Cryo-EM map of the 50S subunit bound with both EF-G (GDPNP) and RRF==
==Coordinates of RRF and EF-G fitted into Cryo-EM map of the 50S subunit bound with both EF-G (GDPNP) and RRF==
<StructureSection load='1zn0' size='340' side='right' caption='[[1zn0]], [[Resolution|resolution]] 15.50&Aring;' scene=''>
<SX load='1zn0' size='340' side='right' viewer='molstar' caption='[[1zn0]], [[Resolution|resolution]] 15.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1zn0]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZN0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ZN0 FirstGlance]. <br>
<table><tr><td colspan='2'>[[1zn0]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZN0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ZN0 FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1pn6|1pn6]], [[1ek8|1ek8]], [[1p6g|1p6g]]</td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 15.5&#8491;</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=1zn0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1zn0 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1zn0 RCSB], [http://www.ebi.ac.uk/pdbsum/1zn0 PDBsum]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1zn0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1zn0 OCA], [https://pdbe.org/1zn0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1zn0 RCSB], [https://www.ebi.ac.uk/pdbsum/1zn0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1zn0 ProSAT]</span></td></tr>
<table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RRF_ECOLI RRF_ECOLI] Responsible for the release of ribosomes from messenger RNA at the termination of protein biosynthesis. May increase the efficiency of translation by recycling ribosomes from one round of translation to another.[HAMAP-Rule:MF_00040]
== 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/zn/1zn0_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zn/1zn0_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/chain_selection.php?pdb_ID=2ata ConSurf].
</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=1zn0 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Ribosome recycling, the disassembly of the posttermination complex after each round of protein synthesis, is an essential step in mRNA translation, but its mechanism has remained obscure. In eubacteria, recycling is catalyzed by RRF (ribosome recycling factor) and EF-G (elongation factor G). By using cryo-electron microscopy, we have obtained two density maps, one of the RRF bound posttermination complex and one of the 50S subunit bound with both EF-G and RRF. Comparing the two maps, we found domain I of RRF to be in the same orientation, while domain II in the EF-G-containing 50S subunit is extensively rotated (approximately 60 degrees) compared to its orientation in the 70S complex. Mapping the 50S conformation of RRF onto the 70S posttermination complex suggests that it can disrupt the intersubunit bridges B2a and B3, and thus effect a separation of the two subunits. These observations provide the structural basis for the mechanism by which the posttermination complex is split into subunits by the joint action of RRF and EF-G.
Mechanism for the disassembly of the posttermination complex inferred from cryo-EM studies.,Gao N, Zavialov AV, Li W, Sengupta J, Valle M, Gursky RP, Ehrenberg M, Frank J Mol Cell. 2005 Jun 10;18(6):663-74. PMID:15949441<ref>PMID:15949441</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>


==See Also==
==See Also==
*[[Elongation factor|Elongation factor]]
*[[Elongation factor 3D structures|Elongation factor 3D structures]]
== References ==
*[[Ribosome 3D structures|Ribosome 3D structures]]
<references/>
*[[Ribosome recycling factor|Ribosome recycling factor]]
__TOC__
__TOC__
</StructureSection>
</SX>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Ehrenberg, M.]]
[[Category: Large Structures]]
[[Category: Frank, J.]]
[[Category: Ehrenberg M]]
[[Category: Gao, N.]]
[[Category: Frank J]]
[[Category: Gursky, R P.]]
[[Category: Gao N]]
[[Category: Li, W.]]
[[Category: Gursky RP]]
[[Category: Sengupta, J.]]
[[Category: Li W]]
[[Category: Valle, M.]]
[[Category: Sengupta J]]
[[Category: Zavialov, A V.]]
[[Category: Valle M]]
[[Category: 50s subunit]]
[[Category: Zavialov AV]]
[[Category: Elongation factor g]]
[[Category: Ribosome recycling factor]]
[[Category: Translation-biosynthetic protein-rna complex]]

Latest revision as of 12:05, 14 February 2024

Coordinates of RRF and EF-G fitted into Cryo-EM map of the 50S subunit bound with both EF-G (GDPNP) and RRFCoordinates of RRF and EF-G fitted into Cryo-EM map of the 50S subunit bound with both EF-G (GDPNP) and RRF

1zn0, resolution 15.50Å

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA
Retrieved from "https://proteopedia.openfox.io/wiki/index.php?title=1zn0&oldid=4057291"