View source for 5lpq


==tRNA guanine Transglycosylase (TGT) in co-crystallized complex (space group P21) with 6-amino-4-(2-((3aR,4R,6R,6aR)-6-methoxy-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)ethyl)-2-(methylamino)-1H-imidazo[4,5-g]quinazolin-8(7H)-one==
<StructureSection load='5lpq' size='340' side='right'caption='[[5lpq]], [[Resolution|resolution]] 2.52&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5lpq]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Zymomonas_mobilis_subsp._mobilis_ZM4_=_ATCC_31821 Zymomonas mobilis subsp. mobilis ZM4 = ATCC 31821]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5LPQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5LPQ 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]] 2.52&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=72C:4-[2-[(3~{a}~{R},4~{R},6~{R},6~{a}~{R})-4-methoxy-2,2-dimethyl-3~{a},4,6,6~{a}-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]ethyl]-6-azanyl-2-(methylamino)-1,7-dihydroimidazo[4,5-g]quinazolin-8-one'>72C</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=5lpq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5lpq OCA], [https://pdbe.org/5lpq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5lpq RCSB], [https://www.ebi.ac.uk/pdbsum/5lpq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5lpq ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/TGT_ZYMMO TGT_ZYMMO] Exchanges the guanine residue with 7-aminomethyl-7-deazaguanine in tRNAs with GU(N) anticodons (tRNA-Asp, -Asn, -His and -Tyr). After this exchange, a cyclopentendiol moiety is attached to the 7-aminomethyl group of 7-deazaguanine, resulting in the hypermodified nucleoside queuosine (Q) (7-(((4,5-cis-dihydroxy-2-cyclopenten-1-yl)amino)methyl)-7-deazaguanosine).[HAMAP-Rule:MF_00168]

==See Also==
*[[TRNA-guanine transglycosylase 3D structures|TRNA-guanine transglycosylase 3D structures]]
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Zymomonas mobilis subsp. mobilis ZM4 = ATCC 31821]]
[[Category: Ehrmann FR]]
[[Category: Heine A]]
[[Category: Klebe G]]