4k0k
From Proteopedia
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(New page: '''Unreleased structure''' The entry 4k0k is ON HOLD Authors: Fernandez, I.S., Ng, C.L., Kelley, A.C., Guowei, W., Yu, Y.T., Ramakrishnan, V. Description: CRYSTAL STRUCTURE OF THE THER...) |
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| - | '''Unreleased structure''' | ||
| - | + | ==Crystal structure of the Thermus thermophilus 30S ribosomal subunit complexed with a serine-ASL and mRNA containing a stop codon== | |
| + | <StructureSection load='4k0k' size='340' side='right'caption='[[4k0k]], [[Resolution|resolution]] 3.40Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[4k0k]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermus_thermophilus_HB8 Thermus thermophilus HB8] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4K0K OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4K0K FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.4Å</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=4k0k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4k0k OCA], [https://pdbe.org/4k0k PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4k0k RCSB], [https://www.ebi.ac.uk/pdbsum/4k0k PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4k0k ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/RS2_THET8 RS2_THET8] Spans the head-body hinge region of the 30S subunit. Is loosely associated with the 30S subunit.[HAMAP-Rule:MF_00291_B] | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | During normal translation, the binding of a release factor to one of the three stop codons (UGA, UAA or UAG) results in the termination of protein synthesis. However, modification of the initial uridine to a pseudouridine (Psi) allows efficient recognition and read-through of these stop codons by a transfer RNA (tRNA), although it requires the formation of two normally forbidden purine-purine base pairs. Here we determined the crystal structure at 3.1 A resolution of the 30S ribosomal subunit in complex with the anticodon stem loop of tRNASer bound to the PsiAG stop codon in the A site. The PsiA base pair at the first position is accompanied by the formation of purine-purine base pairs at the second and third positions of the codon, which show an unusual Watson-Crick/Hoogsteen geometry. The structure shows a previously unsuspected ability of the ribosomal decoding centre to accommodate non-canonical base pairs. | ||
| - | + | Unusual base pairing during the decoding of a stop codon by the ribosome.,Fernandez IS, Ng CL, Kelley AC, Wu G, Yu YT, Ramakrishnan V Nature. 2013 Jun 30. doi: 10.1038/nature12302. PMID:23812587<ref>PMID:23812587</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| + | </div> | ||
| + | <div class="pdbe-citations 4k0k" style="background-color:#fffaf0;"></div> | ||
| + | |||
| + | ==See Also== | ||
| + | *[[Ribosomal protein THX 3D structures|Ribosomal protein THX 3D structures]] | ||
| + | *[[Ribosome 3D structures|Ribosome 3D structures]] | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Synthetic construct]] | ||
| + | [[Category: Thermus thermophilus HB8]] | ||
| + | [[Category: Fernandez IS]] | ||
| + | [[Category: Guowei W]] | ||
| + | [[Category: Kelley AC]] | ||
| + | [[Category: Ng CL]] | ||
| + | [[Category: Ramakrishnan V]] | ||
| + | [[Category: Yu YT]] | ||
Current revision
Crystal structure of the Thermus thermophilus 30S ribosomal subunit complexed with a serine-ASL and mRNA containing a stop codon
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