4gcw: Difference between revisions
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==Crystal structure of RNase Z in complex with precursor tRNA(Thr)== | ==Crystal structure of RNase Z in complex with precursor tRNA(Thr)== | ||
<StructureSection load='4gcw' size='340' side='right' caption='[[4gcw]], [[Resolution|resolution]] 3.00Å' scene=''> | <StructureSection load='4gcw' size='340' side='right' caption='[[4gcw]], [[Resolution|resolution]] 3.00Å' scene=''> | ||
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BSU23840, rnz, yqjK ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=224308 BACSU])</td></tr> | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BSU23840, rnz, yqjK ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=224308 BACSU])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Ribonuclease_Z Ribonuclease Z], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.26.11 3.1.26.11] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Ribonuclease_Z Ribonuclease Z], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.26.11 3.1.26.11] </span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4gcw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gcw OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4gcw RCSB], [http://www.ebi.ac.uk/pdbsum/4gcw PDBsum]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4gcw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gcw OCA], [http://pdbe.org/4gcw PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4gcw RCSB], [http://www.ebi.ac.uk/pdbsum/4gcw PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4gcw ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | </div> | ||
<div class="pdbe-citations 4gcw" style="background-color:#fffaf0;"></div> | |||
==See Also== | ==See Also== | ||
*[[Ribonuclease|Ribonuclease]] | *[[Ribonuclease|Ribonuclease]] | ||
*[[TRNA|TRNA]] | |||
*[[Temp|Temp]] | *[[Temp|Temp]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
Revision as of 21:43, 4 August 2016
Crystal structure of RNase Z in complex with precursor tRNA(Thr)Crystal structure of RNase Z in complex with precursor tRNA(Thr)
Structural highlights
Function[RNZ_BACSU] Zinc phosphodiesterase, which displays some tRNA 3'-processing endonuclease activity. Probably involved in tRNA maturation, by removing a 3'-trailer from precursor tRNA.[1] Publication Abstract from PubMedRibonuclease (RNase) Z is involved in the maturation of the 3' ends of transfer RNAs (tRNAs) in all three kingdoms of life. To prevent futile cycles of CCA addition and removal, eukaryotic RNase Z discriminates against mature tRNAs bearing a CCA motif, with the first cytosine residue (C74) being the key antideterminant. Here, we show that, remarkably, the B. subtilis enzyme does not discriminate against cytosine in position 74, but rather is highly stimulated by uracil in this location. Consistent with this observation, the vast majority of B. subtilis tRNA precursor substrates of RNase Z naturally contain U74. Those tRNA precursors with a uracil further downstream are also substrates for RNase Z, but are matured in a two-step endo/exonuclease reaction. We solved the first crystal structure of B. subtilis RNase Z bound to a tRNA(Thr) precursor with U74 and show that the enzyme has a specific binding pocket for this nucleotide. Activation of tRNA maturation by downstream uracil residues in B. subtilis.,Pellegrini O, Li de la Sierra-Gallay I, Piton J, Gilet L, Condon C Structure. 2012 Oct 10;20(10):1769-77. doi: 10.1016/j.str.2012.08.002. Epub 2012 , Aug 30. PMID:22940585[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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