View source for 3j9m


==Structure of the human mitochondrial ribosome (class 1)==
<SX load='3j9m' size='340' side='right' viewer='molstar' caption='[[3j9m]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3j9m]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3J9M OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3J9M 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]] 3.5&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=3j9m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3j9m OCA], [https://pdbe.org/3j9m PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3j9m RCSB], [https://www.ebi.ac.uk/pdbsum/3j9m PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3j9m ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RM42_HUMAN RM42_HUMAN] 
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== Publication Abstract from PubMed ==
The highly divergent ribosomes of human mitochondria (mitoribosomes) synthesize 13 essential proteins of oxidative phosphorylation complexes. We have determined the structure of the intact mitoribosome to 3.5 angstrom resolution by means of single-particle electron cryogenic microscopy. It reveals 80 extensively interconnected proteins, 36 of which are specific to mitochondria, and three ribosomal RNA molecules. The head domain of the small subunit, particularly the messenger (mRNA) channel, is highly remodeled. Many intersubunit bridges are specific to the mitoribosome, which adopts conformations involving ratcheting or rolling of the small subunit that are distinct from those seen in bacteria or eukaryotes. An intrinsic guanosine triphosphatase mediates a contact between the head and central protuberance. The structure provides a reference for analysis of mutations that cause severe pathologies and for future drug design.

Ribosome. The structure of the human mitochondrial ribosome.,Amunts A, Brown A, Toots J, Scheres SH, Ramakrishnan V Science. 2015 Apr 3;348(6230):95-8. doi: 10.1126/science.aaa1193. Epub 2015 Apr, 2. PMID:25838379<ref>PMID:25838379</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 3j9m" style="background-color:#fffaf0;"></div>

==See Also==
*[[Ribosome 3D structures|Ribosome 3D structures]]
*[[Transfer RNA (tRNA)|Transfer RNA (tRNA)]]
== References ==
<references/>
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</SX>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Amunts A]]
[[Category: Brown A]]
[[Category: Ramakrishnan V]]
[[Category: Scheres SH]]
[[Category: Toots J]]