View source for 8jgr


==Crystal structure of Deinococcus radiodurans exopolyphosphatase in the presence of Pi==
<StructureSection load='8jgr' size='340' side='right'caption='[[8jgr]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8jgr]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Deinococcus_radiodurans_R1 Deinococcus radiodurans R1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8JGR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8JGR 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]] 2.5&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</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=8jgr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8jgr OCA], [https://pdbe.org/8jgr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8jgr RCSB], [https://www.ebi.ac.uk/pdbsum/8jgr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8jgr ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q9RYW9_DEIRA Q9RYW9_DEIRA] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Living organisms ranging from bacteria to animals have developed their own ways to accumulate and store phosphate during evolution, in particular as the polyphosphate (polyP) granules in bacteria. Degradation of polyP into phosphate is involved in phosphorus cycling, and exopolyphosphatase (PPX) is the key enzyme for polyP degradation in bacteria. Thus, understanding the structure basis of PPX is crucial to reveal the polyP degradation mechanism. Here, it is found that PPX structure varies in the length of a-helical interdomain linker (a-linker) across various bacteria, which is negatively correlated with their enzymatic activity and thermostability - those with shorter a-linkers demonstrate higher polyP degradation ability. Moreover, the artificial DrPPX mutants with shorter a-linker tend to have more compact pockets for polyP binding and stronger subunit interactions, as well as higher enzymatic efficiency (k(cat)/K(m)) than that of DrPPX wild type. In Deinococcus-Thermus, the PPXs from thermophilic species possess a shorter a-linker and retain their catalytic ability at high temperatures (70 degrees C), which may facilitate the thermophilic species to utilize polyP in high-temperature environments. These findings provide insights into the interdomain linker length-dependent evolution of PPXs, which shed light on enzymatic adaption for phosphorus cycling during natural evolution and rational design of enzyme.

Structural Evolution of Bacterial Polyphosphate Degradation Enzyme for Phosphorus Cycling.,Dai S, Wang B, Ye R, Zhang D, Xie Z, Yu N, Cai C, Huang C, Zhao J, Zhang F, Hua Y, Zhao Y, Zhou R, Tian B Adv Sci (Weinh). 2024 Apr 29:e2309602. doi: 10.1002/advs.202309602. PMID:38682481<ref>PMID:38682481</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8jgr" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Deinococcus radiodurans R1]]
[[Category: Large Structures]]
[[Category: Dai S]]
[[Category: Zhao Y]]