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New page: left|200px<br /><applet load="1trj" size="450" color="white" frame="true" align="right" spinBox="true" caption="1trj, resolution 11.70Å" /> '''Homology Model of Y...
 
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[[Image:1trj.gif|left|200px]]<br /><applet load="1trj" size="450" color="white" frame="true" align="right" spinBox="true"
caption="1trj, resolution 11.70&Aring;" />
'''Homology Model of Yeast RACK1 Protein fitted into 11.7A cryo-EM map of Yeast 80S Ribosome'''<br />


==Overview==
==Homology Model of Yeast RACK1 Protein fitted into 11.7A cryo-EM map of Yeast 80S Ribosome==
RACK1 serves as a scaffold protein for a wide range of kinases and, membrane-bound receptors. It is a WD-repeat family protein and is, predicted to have a beta-propeller architecture with seven blades like a, Gbeta protein. Mass spectrometry studies have identified its association, with the small subunit of eukaryotic ribosomes and, most recently, it has, been shown to regulate initiation by recruiting protein kinase C to the, 40S subunit. Here we present the results of a cryo-EM study of the 80S, ribosome that positively locate RACK1 on the head region of the 40S, subunit, in the immediate vicinity of the mRNA exit channel. One face of, RACK1 exposes the WD-repeats as a platform for interactions with kinases, and receptors. Using this platform, RACK1 can recruit other proteins to, the ribosome.
<SX load='1trj' size='340' side='right' viewer='molstar' caption='[[1trj]], [[Resolution|resolution]] 11.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1trj]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TRJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1TRJ FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 11.7&#8491;</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=1trj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1trj OCA], [https://pdbe.org/1trj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1trj RCSB], [https://www.ebi.ac.uk/pdbsum/1trj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1trj ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/GBLP_YEAST GBLP_YEAST] Located at the head of the 40S ribosomal subunit in the vicinity of the mRNA exit channel, it serves as a scaffold protein that can recruit other proteins to the ribosome. Involved in the negative regulation of translation of a specific subset of proteins.<ref>PMID:15340087</ref>
== 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/tr/1trj_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/main_output.php?pdb_ID=1trj ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
1TRJ is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1TRJ OCA].
*[[3D sructureseceptor for activated protein kinase C 1|3D sructureseceptor for activated protein kinase C 1]]
 
== References ==
==Reference==
<references/>
Identification of the versatile scaffold protein RACK1 on the eukaryotic ribosome by cryo-EM., Sengupta J, Nilsson J, Gursky R, Spahn CM, Nissen P, Frank J, Nat Struct Mol Biol. 2004 Oct;11(10):957-62. Epub 2004 Aug 29. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15334071 15334071]
__TOC__
</SX>
[[Category: Large Structures]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Single protein]]
[[Category: Frank J]]
[[Category: Frank, J.]]
[[Category: Gursky R]]
[[Category: Gursky, R.]]
[[Category: Nilsson J]]
[[Category: Nilsson, J.]]
[[Category: Nissen P]]
[[Category: Nissen, P.]]
[[Category: Sengupta J]]
[[Category: Sengupta, J.]]
[[Category: Spahn CM]]
[[Category: Spahn, C.M.]]
[[Category: cryo-electron microscopy]]
[[Category: homology model]]
[[Category: rack1]]
[[Category: ribosome]]
 
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Latest revision as of 08:41, 14 February 2024

Homology Model of Yeast RACK1 Protein fitted into 11.7A cryo-EM map of Yeast 80S Ribosome

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