View source for 9zqs


==Mono-hexameric bGDH map in apo form==
<StructureSection load='9zqs' size='340' side='right'caption='[[9zqs]], [[Resolution|resolution]] 2.52&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[9zqs]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9ZQS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9ZQS FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.52&#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=9zqs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9zqs OCA], [https://pdbe.org/9zqs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9zqs RCSB], [https://www.ebi.ac.uk/pdbsum/9zqs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9zqs ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/DHE3_BOVIN DHE3_BOVIN] May be involved in learning and memory reactions by increasing the turnover of the excitatory neurotransmitter glutamate (By similarity).<ref>PMID:14659072</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Glutamate dehydrogenase (GDH) is a highly regulated key enzyme that catalyzes the reversible oxidative deamination of glutamate to alpha-ketoglutarate, positioning it at a critical hub linking amino acid catabolism to energy production while supplying ammonia for urea synthesis and other nitrogen pathways. Early investigations have shown that bovine GDH (bGDH), which shares 98% sequence identity with its human homolog, assembles into polymeric filaments with altered allosteric responses. Filamentation has only relatively recently been appreciated as a widespread mechanism of enzyme regulation, prompting a reevaluation of these early observations in GDH. Here, we use high-resolution cryogenic electron microscopy (cryo-EM) to show that bGDH hexamers assemble via reciprocal "antenna" interactions that oppose the conformational changes associated with GTP inhibition, revealing how filamentation reshapes GDH allostery and with implications for the treatment of human disease.

Structural Mechanism of Filamentation Induced Dampening of GTP Inhibition of Glutamate Dehydrogenase.,Shan Z, Darwish NI, Rivero-Gamez A, Strutzenberg TS, Lyumkis D, Horton NC bioRxiv [Preprint]. 2026 Jul 7:2026.07.06.736867. doi: , 10.64898/2026.07.06.736867. PMID:42465363<ref>PMID:42465363</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 9zqs" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Bos taurus]]
[[Category: Large Structures]]
[[Category: Lyumkis D]]
[[Category: Shan Z]]