View source for 6yhd


==tRNA-guanine Transglycosylase (TGT) labeled with 5-fluorotryptophan in co-crystallized complex with 6-amino-4-(2-((2R,3S,4R,5R)-3,4-dihydroxy-5-methoxytetrahydrofuran-2-yl)ethyl)-2-(methylamino)-3,7-dihydro-8H-imidazo[4,5-g]quinazolin-8-one==
<StructureSection load='6yhd' size='340' side='right'caption='[[6yhd]], [[Resolution|resolution]] 1.25&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6yhd]] is a 1 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=6YHD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6YHD 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]] 1.25&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=1WK:METHYL+6-[6-AMINO-2-(METHYLAMINO)-8-OXO-7,8-DIHYDRO-1H-IMIDAZO[4,5-G]QUINAZOLIN-4-YL]-5,6-DIDEOXY-BETA-D-RIBO-HEXOFURANOSIDE'>1WK</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=FTR:FLUOROTRYPTOPHANE'>FTR</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</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=6yhd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6yhd OCA], [https://pdbe.org/6yhd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6yhd RCSB], [https://www.ebi.ac.uk/pdbsum/6yhd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6yhd 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: Heine A]]
[[Category: Klebe G]]
[[Category: Nguyen A]]