4x0a: Difference between revisions
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<StructureSection load='4x0a' size='340' side='right'caption='[[4x0a]], [[Resolution|resolution]] 3.50Å' scene=''> | <StructureSection load='4x0a' size='340' side='right'caption='[[4x0a]], [[Resolution|resolution]] 3.50Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4x0a]] is a 2 chain structure with sequence from [ | <table><tr><td colspan='2'>[[4x0a]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Aquifex_aeolicus_VF5 Aquifex aeolicus VF5] and [https://en.wikipedia.org/wiki/Thermotoga_maritima_MSB8 Thermotoga maritima MSB8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4X0A OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4X0A FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.505Å</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=4x0a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4x0a OCA], [https://pdbe.org/4x0a PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4x0a RCSB], [https://www.ebi.ac.uk/pdbsum/4x0a PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4x0a ProSAT]</span></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | |||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/AATNT_AQUAE AATNT_AQUAE] tRNA nucleotidyltransferase involved in the synthesis of the tRNA CCA terminus. Adds the terminal adenosine residue to tRNA (PubMed:11701927, PubMed:25914059). Can incorporate CMP into tRNA ending with C74C75 (tRNACC), with very weak efficiency (PubMed:25914059).<ref>PMID:11701927</ref> <ref>PMID:25914059</ref> | |||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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==See Also== | ==See Also== | ||
*[[Poly(A) | *[[Poly(A) polymerase 3D structures|Poly(A) polymerase 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Aquifex aeolicus VF5]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: | [[Category: Thermotoga maritima MSB8]] | ||
[[Category: | [[Category: Tomita K]] | ||
[[Category: | [[Category: Yamashita S]] | ||
Latest revision as of 18:24, 8 November 2023
Structure of tRNA-processing enzyme complex 6Structure of tRNA-processing enzyme complex 6
Structural highlights
FunctionAATNT_AQUAE tRNA nucleotidyltransferase involved in the synthesis of the tRNA CCA terminus. Adds the terminal adenosine residue to tRNA (PubMed:11701927, PubMed:25914059). Can incorporate CMP into tRNA ending with C74C75 (tRNACC), with very weak efficiency (PubMed:25914059).[1] [2] Publication Abstract from PubMedThe 3'-terminal CCA (C74C75A76-3') of tRNA is required for protein synthesis. In Aquifex aeolicus, the CCA-3' is synthesized by CC-adding and A-adding enzymes, although in most organisms, CCA is synthesized by a single CCA-adding enzyme. The mechanisms by which the A-adding enzyme adds only A76, but not C74C75, onto tRNA remained elusive. The complex structures of the enzyme with various tRNAs revealed the presence of a single tRNA binding site on the enzyme, with the enzyme measuring the acceptor-TPsiC helix length of tRNA. The 3'-C75 of tRNA lacking A76 can reach the active site and the size and shape of the nucleotide binding pocket at the insertion stage are suitable for ATP. The 3'-C74 of tRNA lacking C75A76 cannot reach the active site, although CTP or ATP can bind the active pocket. Thus, the A-adding enzyme adds only A76, but not C74C75, onto tRNA. Measurement of Acceptor-TPsiC Helix Length of tRNA for Terminal A76-Addition by A-Adding Enzyme.,Yamashita S, Martinez A, Tomita K Structure. 2015 May 5;23(5):830-42. doi: 10.1016/j.str.2015.03.013. Epub 2015 Apr, 23. PMID:25914059[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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