9zqt: Difference between revisions
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==Composite map of the bGDH di-hexamer in liganded form== | |||
<StructureSection load='9zqt' size='340' side='right'caption='[[9zqt]], [[Resolution|resolution]] 3.50Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[9zqt]] is a 12 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=9ZQT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9ZQT 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]] 3.5Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GGL:GAMMA-L-GLUTAMIC+ACID'>GGL</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=NAI:1,4-DIHYDRONICOTINAMIDE+ADENINE+DINUCLEOTIDE'>NAI</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=9zqt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9zqt OCA], [https://pdbe.org/9zqt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9zqt RCSB], [https://www.ebi.ac.uk/pdbsum/9zqt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9zqt 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®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 9zqt" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Bos taurus]] | |||
[[Category: Large Structures]] | |||
[[Category: Lyumkis D]] | |||
[[Category: Shan Z]] | |||
Latest revision as of 20:37, 29 July 2026
Composite map of the bGDH di-hexamer in liganded form
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