View source for 9emg


==SmNuc1 nuclease from Stenotrophomonas maltophilia in complex with guanosine-5'-monophosphate as a product of c-di-GMP cleavage==
<StructureSection load='9emg' size='340' side='right'caption='[[9emg]], [[Resolution|resolution]] 1.15&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[9emg]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Stenotrophomonas_maltophilia Stenotrophomonas maltophilia]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9EMG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9EMG 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]] 1.148&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=5GP:GUANOSINE-5-MONOPHOSPHATE'>5GP</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=9emg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9emg OCA], [https://pdbe.org/9emg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9emg RCSB], [https://www.ebi.ac.uk/pdbsum/9emg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9emg ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Nucleases of the S1/P1 family have important applications in biotechnology and molecular biology. We have performed structural analyses of SmNuc1 nuclease from Stenotrophomonas maltophilia, including RNA cleavage product binding and mutagenesis in a newly discovered flexible Arg74-motif, involved in substrate binding and product release and likely contributing to the high catalytic rate. The Arg74Gln mutation shifts substrate preference towards RNA. Purine nucleotide binding differs compared to pyrimidines, confirming the plasticity of the active site. The enzyme-product interactions indicate a gradual, stepwise product release. The activity of SmNuc1 towards c-di-GMP in crystal resulted in a distinguished complex with the emerging product 5'-GMP. This enzyme from an opportunistic pathogen relies on specific architecture enabling high performance under broad conditions, attractive for biotechnologies.

Substrate preference, RNA binding and active site versatility of Stenotrophomonas maltophilia nuclease SmNuc1, explained by a structural study.,Adamkova K, Trundova M, Koval T, Hustakova B, Kolenko P, Duskova J, Skalova T, Dohnalek J FEBS J. 2024 Oct 3. doi: 10.1111/febs.17265. PMID:39361520<ref>PMID:39361520</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 9emg" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Stenotrophomonas maltophilia]]
[[Category: Adamkova K]]
[[Category: Dohnalek J]]
[[Category: Kolenko P]]
[[Category: Koval T]]