View source for 3jbo

{{Large structure}}
==Cryo-electron microscopy reconstruction of the Plasmodium falciparum 80S ribosome bound to P/E-tRNA==
<StructureSection load='3jbo' size='340' side='right' caption='[[3jbo]], [[Resolution|resolution]] 5.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3jbo]] is a 78 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] and [http://en.wikipedia.org/wiki/Plasmodium_falciparum_3d7 Plasmodium falciparum 3d7]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3JBO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3JBO FirstGlance]. <br>
</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=UNK:UNKNOWN'>UNK</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3jbn|3jbn]], [[3jbp|3jbp]]</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3jbo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3jbo OCA], [http://pdbe.org/3jbo PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3jbo RCSB], [http://www.ebi.ac.uk/pdbsum/3jbo PDBsum]</span></td></tr>
</table>
{{Large structure}}
== Function ==
[[http://www.uniprot.org/uniprot/C0H4L5_PLAF7 C0H4L5_PLAF7]] Binds to the 23S rRNA (By similarity).[RuleBase:RU000576] [[http://www.uniprot.org/uniprot/RSSA_PLAF7 RSSA_PLAF7]] Required for the assembly and/or stability of the 40S ribosomal subunit. Required for the processing of the 20S rRNA-precursor to mature 18S rRNA in a late step of the maturation of 40S ribosomal subunits (By similarity). 
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== Publication Abstract from PubMed ==
Plasmodium falciparum, the mosquito-transmitted Apicomplexan parasite, causes the most severe form of human malaria. In the asexual blood-stage, the parasite resides within erythrocytes where it proliferates, multiplies and finally spreads to new erythrocytes. Development of drugs targeting the ribosome, the site of protein synthesis, requires specific knowledge of its structure and work cycle, and, critically, the ways they differ from those in the human host. Here, we present five cryo-electron microscopy (cryo-EM) reconstructions of ribosomes purified from P. falciparum blood-stage schizonts at sub-nanometer resolution. Atomic models were built from these density maps by flexible fitting. Significantly, our study has taken advantage of new capabilities of cryo-EM, in visualizing several structures co-existing in the sample at once, at a resolution sufficient for building atomic models. We have discovered structural and dynamic features that differentiate the ribosomes of P. falciparum from those of mammalian system. Prompted by the absence of RACK1 on the ribosome in our and an earlier study we confirmed that RACK1 does not specifically co-purify with the 80S fraction in schizonts. More extensive studies, using cryo-EM methodology, of translation in the parasite will provide structural knowledge that may lead to development of novel anti-malarials.

Dynamical features of the Plasmodium falciparum ribosome during translation.,Sun M, Li W, Blomqvist K, Das S, Hashem Y, Dvorin JD, Frank J Nucleic Acids Res. 2015 Oct 1. pii: gkv991. PMID:26432834<ref>PMID:26432834</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 3jbo" style="background-color:#fffaf0;"></div>

==See Also==
*[[TRNA|TRNA]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Plasmodium falciparum 3d7]]
[[Category: Blomqvist, K]]
[[Category: Das, S]]
[[Category: Dvorin, J D]]
[[Category: Frank, J]]
[[Category: Hashem, Y]]
[[Category: Li, W]]
[[Category: Sun, M]]
[[Category: Ribosome]]