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====
==Human mitochondrial ribosome in complex with mRNA, A-site tRNA, P-site tRNA and E-site tRNA==
<StructureSection load='6zsg' size='340' side='right'caption='[[6zsg]]' scene=''>
<StructureSection load='6zsg' size='340' side='right'caption='[[6zsg]], [[Resolution|resolution]] 4.00&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id= OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol= FirstGlance]. <br>
<table><tr><td colspan='2'>[[6zsg]] 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=6ZSG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6ZSG FirstGlance]. <br>
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6zsg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6zsg OCA], [http://pdbe.org/6zsg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6zsg RCSB], [http://www.ebi.ac.uk/pdbsum/6zsg PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6zsg ProSAT]</span></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]] 4&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=004:(2S)-AMINO(PHENYL)ETHANOIC+ACID'>004</scene>, <scene name='pdbligand=DBB:D-ALPHA-AMINOBUTYRIC+ACID'>DBB</scene>, <scene name='pdbligand=DOL:5-(2-DIETHYLAMINO-ETHANESULFONYL)-21-HYDROXY-10-ISOPROPYL-11,19-DIMETHYL-9,26-DIOXA-3,15,28-TRIAZA-TRICYCLO[23.2.1.00,255]OCTACOSA-1(27),12,17,19,25(28)-PENTAENE-2,8,14,23-TETRAONE'>DOL</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MHT:(3S)-3-(METHYLSULFANYL)-1-AZABICYCLO[2.2.2]OCTANE'>MHT</scene>, <scene name='pdbligand=MHU:4-N,N-(DIMETHYLAMINO)-L-PHENYLALANINE'>MHU</scene>, <scene name='pdbligand=MHV:4-OXO-L-PIPECOLIC+ACID'>MHV</scene>, <scene name='pdbligand=MHW:3-HYDROXYPICOLINIC+ACID'>MHW</scene>, <scene name='pdbligand=P5P:PURINE+RIBOSIDE-5-MONOPHOSPHATE'>P5P</scene>, <scene name='pdbligand=Y5P:1-(5-O-PHOSPHONO-BETA-D-RIBOFURANOSYL)-1,4-DIHYDROPYRIMIDINE'>Y5P</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=6zsg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6zsg OCA], [https://pdbe.org/6zsg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6zsg RCSB], [https://www.ebi.ac.uk/pdbsum/6zsg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6zsg ProSAT]</span></td></tr>
</table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RT06_HUMAN RT06_HUMAN]
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Translation of mitochondrial messenger RNA (mt-mRNA) is performed by distinct mitoribosomes comprising at least 36 mitochondria-specific proteins. How these mitoribosomal proteins assist in the binding of mt-mRNA and to what extent they are involved in the translocation of transfer RNA (mt-tRNA) is unclear. To visualize the process of translation in human mitochondria, we report ~3.0 A resolution structure of the human mitoribosome, including the L7/L12 stalk, and eight structures of its functional complexes with mt-mRNA, mt-tRNAs, recycling factor and additional trans factors. The study reveals a transacting protein module LRPPRC-SLIRP that delivers mt-mRNA to the mitoribosomal small subunit through a dedicated platform formed by the mitochondria-specific protein mS39. Mitoribosomal proteins of the large subunit mL40, mL48, and mL64 coordinate translocation of mt-tRNA. The comparison between those structures shows dynamic interactions between the mitoribosome and its ligands, suggesting a sequential mechanism of conformational changes.
Structural basis of mitochondrial translation.,Aibara S, Singh V, Modelska A, Amunts A Elife. 2020 Aug 19;9. pii: 58362. doi: 10.7554/eLife.58362. PMID:32812867<ref>PMID:32812867</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6zsg" style="background-color:#fffaf0;"></div>
==See Also==
*[[Ribosome 3D structures|Ribosome 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Z-disk]]
[[Category: Aibara S]]
[[Category: Amunts A]]
[[Category: Modelska A]]
[[Category: Singh V]]

Latest revision as of 11:53, 14 July 2024

Human mitochondrial ribosome in complex with mRNA, A-site tRNA, P-site tRNA and E-site tRNAHuman mitochondrial ribosome in complex with mRNA, A-site tRNA, P-site tRNA and E-site tRNA

Structural highlights

6zsg is a 10 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:Electron Microscopy, Resolution 4Å
Ligands:, , , , , , , , , , ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

RT06_HUMAN

Publication Abstract from PubMed

Translation of mitochondrial messenger RNA (mt-mRNA) is performed by distinct mitoribosomes comprising at least 36 mitochondria-specific proteins. How these mitoribosomal proteins assist in the binding of mt-mRNA and to what extent they are involved in the translocation of transfer RNA (mt-tRNA) is unclear. To visualize the process of translation in human mitochondria, we report ~3.0 A resolution structure of the human mitoribosome, including the L7/L12 stalk, and eight structures of its functional complexes with mt-mRNA, mt-tRNAs, recycling factor and additional trans factors. The study reveals a transacting protein module LRPPRC-SLIRP that delivers mt-mRNA to the mitoribosomal small subunit through a dedicated platform formed by the mitochondria-specific protein mS39. Mitoribosomal proteins of the large subunit mL40, mL48, and mL64 coordinate translocation of mt-tRNA. The comparison between those structures shows dynamic interactions between the mitoribosome and its ligands, suggesting a sequential mechanism of conformational changes.

Structural basis of mitochondrial translation.,Aibara S, Singh V, Modelska A, Amunts A Elife. 2020 Aug 19;9. pii: 58362. doi: 10.7554/eLife.58362. PMID:32812867[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. ↑ Aibara S, Singh V, Modelska A, Amunts A. Structural basis of mitochondrial translation. Elife. 2020 Aug 19;9. pii: 58362. doi: 10.7554/eLife.58362. PMID:32812867 doi:http://dx.doi.org/10.7554/eLife.58362

6zsg, resolution 4.00Å

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