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== | ==Crystal structure of C. albicans tRNA(His) guanylyltransferase (Thg1) with GTP== | ||
[[3wc0]] is a 16 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3WC0 OCA]. | <StructureSection load='3wc0' size='340' side='right'caption='[[3wc0]], [[Resolution|resolution]] 3.03Å' scene=''> | ||
[[ | == Structural highlights == | ||
[[Category: Nemoto | <table><tr><td colspan='2'>[[3wc0]] is a 16 chain structure with sequence from [https://en.wikipedia.org/wiki/Candida_albicans_SC5314 Candida albicans SC5314]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3WC0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3WC0 FirstGlance]. <br> | ||
[[Category: Sonoda | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.03Å</td></tr> | ||
[[Category: Tanaka | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | ||
[[Category: Yamashita | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3wc0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3wc0 OCA], [https://pdbe.org/3wc0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3wc0 RCSB], [https://www.ebi.ac.uk/pdbsum/3wc0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3wc0 ProSAT]</span></td></tr> | ||
[[Category: Yao | </table> | ||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Nucleotide polymerization proceeds in the forward (5'-3') direction. This tenet of the central dogma of molecular biology is found in diverse processes including transcription, reverse transcription, DNA replication, and even in lagging strand synthesis where reverse polymerization (3'-5') would present a "simpler" solution. Interestingly, reverse (3'-5') nucleotide addition is catalyzed by the tRNA maturation enzyme tRNA(His) guanylyltransferase, a structural homolog of canonical forward polymerases. We present a Candida albicans tRNA(His) guanylyltransferase-tRNA(His) complex structure that reveals the structural basis of reverse polymerization. The directionality of nucleotide polymerization is determined by the orientation of approach of the nucleotide substrate. The tRNA substrate enters the enzyme's active site from the opposite direction (180 degrees flip) compared with similar nucleotide substrates of canonical 5'-3' polymerases, and the finger domains are on opposing sides of the core palm domain. Structural, biochemical, and phylogenetic data indicate that reverse polymerization appeared early in evolution and resembles a mirror image of the forward process. | |||
Structural basis of reverse nucleotide polymerization.,Nakamura A, Nemoto T, Heinemann IU, Yamashita K, Sonoda T, Komoda K, Tanaka I, Soll D, Yao M Proc Natl Acad Sci U S A. 2013 Dec 24;110(52):20970-5. doi:, 10.1073/pnas.1321312111. Epub 2013 Dec 9. PMID:24324136<ref>PMID:24324136</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 3wc0" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Candida albicans SC5314]] | |||
[[Category: Large Structures]] | |||
[[Category: Nakamura A]] | |||
[[Category: Nemoto T]] | |||
[[Category: Sonoda T]] | |||
[[Category: Tanaka I]] | |||
[[Category: Yamashita K]] | |||
[[Category: Yao M]] | |||