View source for 8jgx


==Crystal structure of Acinetobacter baumannii exopolyphosphatase==
<StructureSection load='8jgx' size='340' side='right'caption='[[8jgx]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8jgx]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Acinetobacter_baumannii_15827 Acinetobacter baumannii 15827]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8JGX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8JGX 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]] 2.6&#8491;</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=8jgx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8jgx OCA], [https://pdbe.org/8jgx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8jgx RCSB], [https://www.ebi.ac.uk/pdbsum/8jgx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8jgx ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/D0CA66_ACIB2 D0CA66_ACIB2] 
<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 8jgx" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Acinetobacter baumannii 15827]]
[[Category: Large Structures]]
[[Category: Dai S]]
[[Category: Zhao Y]]