View source for 6ede


==tRNA 2'-phosphotransferase==
<StructureSection load='6ede' size='340' side='right'caption='[[6ede]], [[Resolution|resolution]] 1.55&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6ede]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Acetivibrio_thermocellus_ATCC_27405 Acetivibrio thermocellus ATCC 27405]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6EDE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6EDE 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]] 1.553&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HQG:[[(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl]+[(2~{R},3~{S},4~{R},5~{R})-3,4-bis(oxidanyl)-5-phosphonooxy-oxolan-2-yl]methyl+hydrogen+phosphate'>HQG</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=6ede FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ede OCA], [https://pdbe.org/6ede PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6ede RCSB], [https://www.ebi.ac.uk/pdbsum/6ede PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6ede ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/KPTA_ACET2 KPTA_ACET2] Removes the 2'-phosphate from RNA via an intermediate in which the phosphate is ADP-ribosylated by NAD followed by a presumed transesterification to release the RNA and generate ADP-ribose 1''-2''-cyclic phosphate (APPR>P). May function as an ADP-ribosylase.[HAMAP-Rule:MF_00299]
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Tpt1 is an essential agent of fungal tRNA splicing that removes the 2'-PO4 at the splice junction generated by fungal tRNA ligase. Tpt1 catalyzes a unique two-step reaction whereby the 2'-PO4 attacks NAD(+) to form an RNA-2'-phospho-ADP-ribosyl intermediate that undergoes transesterification to yield 2'-OH RNA and ADP-ribose-1'',2''-cyclic phosphate products. Because Tpt1 is inessential in exemplary bacterial and mammalian taxa, Tpt1 is seen as an attractive antifungal target. Here we report a 1.4 A crystal structure of Tpt1 in a product-mimetic complex with ADP-ribose-1''-phosphate in the NAD(+) site and pAp in the RNA site. The structure reveals how Tpt1 recognizes a 2'-PO4 RNA splice junction and the mechanism of RNA phospho-ADP-ribosylation. This study also provides evidence that a bacterium has an endogenous phosphorylated substrate with which Tpt1 reacts.

Structure of tRNA splicing enzyme Tpt1 illuminates the mechanism of RNA 2'-PO4 recognition and ADP-ribosylation.,Banerjee A, Munir A, Abdullahu L, Damha MJ, Goldgur Y, Shuman S Nat Commun. 2019 Jan 15;10(1):218. doi: 10.1038/s41467-018-08211-9. PMID:30644400<ref>PMID:30644400</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6ede" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Acetivibrio thermocellus ATCC 27405]]
[[Category: Large Structures]]
[[Category: Banerjee A]]
[[Category: Goldgur Y]]
[[Category: Shuman S]]