6yw5: Difference between revisions
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==== | ==The structure of the small subunit of the mitoribosome from Neurospora crassa== | ||
<StructureSection load='6yw5' size='340' side='right'caption='[[6yw5]]' scene=''> | <StructureSection load='6yw5' size='340' side='right'caption='[[6yw5]], [[Resolution|resolution]] 2.85Å' 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 [ | <table><tr><td colspan='2'>[[6yw5]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Neurospora_crassa_OR74A Neurospora crassa OR74A]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6YW5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6YW5 FirstGlance]. <br> | ||
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.85Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=6yw5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6yw5 OCA], [https://pdbe.org/6yw5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6yw5 RCSB], [https://www.ebi.ac.uk/pdbsum/6yw5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6yw5 ProSAT]</span></td></tr> | |||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/RT51_NEUCR RT51_NEUCR] Component of the mitochondrial ribosome (mitoribosome), a dedicated translation machinery responsible for the synthesis of mitochondrial genome-encoded proteins, including at least some of the essential transmembrane subunits of the mitochondrial respiratory chain. The mitoribosomes are attached to the mitochondrial inner membrane and translation products are cotranslationally integrated into the membrane.<ref>PMID:33056988</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Mitoribosomes are specialized protein synthesis machineries in mitochondria. However, how mRNA binds to its dedicated channel, and tRNA moves as the mitoribosomal subunit rotate with respect to each other is not understood. We report models of the translating fungal mitoribosome with mRNA, tRNA and nascent polypeptide, as well as an assembly intermediate. Nicotinamide adenine dinucleotide (NAD) is found in the central protuberance of the large subunit, and the ATPase inhibitory factor 1 (IF(1)) in the small subunit. The models of the active mitoribosome explain how mRNA binds through a dedicated protein platform on the small subunit, tRNA is translocated with the help of the protein mL108, bridging it with L1 stalk on the large subunit, and nascent polypeptide paths through a newly shaped exit tunnel involving a series of structural rearrangements. An assembly intermediate is modeled with the maturation factor Atp25, providing insight into the biogenesis of the mitoribosomal large subunit and translation regulation. | |||
Analysis of translating mitoribosome reveals functional characteristics of translation in mitochondria of fungi.,Itoh Y, Naschberger A, Mortezaei N, Herrmann JM, Amunts A Nat Commun. 2020 Oct 14;11(1):5187. doi: 10.1038/s41467-020-18830-w. PMID:33056988<ref>PMID:33056988</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 6yw5" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Ribosome 3D structures|Ribosome 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: | [[Category: Neurospora crassa OR74A]] | ||
[[Category: Amunts A]] | |||
[[Category: Itoh Y]] | |||
[[Category: Naschberger A]] | |||
Latest revision as of 16:21, 6 November 2024
The structure of the small subunit of the mitoribosome from Neurospora crassaThe structure of the small subunit of the mitoribosome from Neurospora crassa
Structural highlights
FunctionRT51_NEUCR Component of the mitochondrial ribosome (mitoribosome), a dedicated translation machinery responsible for the synthesis of mitochondrial genome-encoded proteins, including at least some of the essential transmembrane subunits of the mitochondrial respiratory chain. The mitoribosomes are attached to the mitochondrial inner membrane and translation products are cotranslationally integrated into the membrane.[1] Publication Abstract from PubMedMitoribosomes are specialized protein synthesis machineries in mitochondria. However, how mRNA binds to its dedicated channel, and tRNA moves as the mitoribosomal subunit rotate with respect to each other is not understood. We report models of the translating fungal mitoribosome with mRNA, tRNA and nascent polypeptide, as well as an assembly intermediate. Nicotinamide adenine dinucleotide (NAD) is found in the central protuberance of the large subunit, and the ATPase inhibitory factor 1 (IF(1)) in the small subunit. The models of the active mitoribosome explain how mRNA binds through a dedicated protein platform on the small subunit, tRNA is translocated with the help of the protein mL108, bridging it with L1 stalk on the large subunit, and nascent polypeptide paths through a newly shaped exit tunnel involving a series of structural rearrangements. An assembly intermediate is modeled with the maturation factor Atp25, providing insight into the biogenesis of the mitoribosomal large subunit and translation regulation. Analysis of translating mitoribosome reveals functional characteristics of translation in mitochondria of fungi.,Itoh Y, Naschberger A, Mortezaei N, Herrmann JM, Amunts A Nat Commun. 2020 Oct 14;11(1):5187. doi: 10.1038/s41467-020-18830-w. PMID:33056988[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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