7zpe: Difference between revisions
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==human branched Chain Keto Acid Dehydrogenase Kinase in complex with ligand== | |||
<StructureSection load='7zpe' size='340' side='right'caption='[[7zpe]], [[Resolution|resolution]] 2.64Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[7zpe]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7ZPE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7ZPE 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]] 2.64Å</td></tr> | |||
[[Category: | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=JP6:2-[(4-chlorophenyl)methylamino]-5-propyl-6~{H}-[1,2,4]triazolo[1,5-a]pyrimidin-7-one'>JP6</scene></td></tr> | ||
[[Category: | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=7zpe FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7zpe OCA], [https://pdbe.org/7zpe PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7zpe RCSB], [https://www.ebi.ac.uk/pdbsum/7zpe PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7zpe ProSAT]</span></td></tr> | ||
[[Category: Kack | </table> | ||
== Disease == | |||
[https://www.uniprot.org/uniprot/BCKD_HUMAN BCKD_HUMAN] Autism-epilepsy syndrome due to branched chain ketoacid dehydrogenase kinase deficiency. The disease is caused by variants affecting the gene represented in this entry. A diet enriched in branched amino acids (BCAAs) allows to normalize plasma BCAA levels. This suggests that it may be possible to treat patients with mutations in BCKDK with BCAA supplementation. | |||
== Function == | |||
[https://www.uniprot.org/uniprot/BCKD_HUMAN BCKD_HUMAN] Serine/threonine-protein kinase component of macronutrients metabolism. Forms a functional kinase and phosphatase pair with PPM1K, serving as a metabolic regulatory node that coordinates branched-chain amino acids (BCAAs) with glucose and lipid metabolism via two distinct phosphoprotein targets: mitochondrial BCKDHA subunit of the branched-chain alpha-ketoacid dehydrogenase (BCKDH) complex and cytosolic ACLY, a lipogenic enzyme of Krebs cycle (PubMed:24449431, PubMed:29779826, PubMed:37558654). Phosphorylates and inactivates mitochondrial BCKDH complex a multisubunit complex consisting of three multimeric components each involved in different steps of BCAA catabolism: E1 composed of BCKDHA and BCKDHB, E2 core composed of DBT monomers, and E3 composed of DLD monomers. Associates with the E2 component of BCKDH complex and phosphorylates BCKDHA on Ser-337, leading to conformational changes that interrupt substrate channeling between E1 and E2 and inactivates the BCKDH complex (PubMed:29779826, PubMed:37558654). Phosphorylates ACLY on Ser-455 in response to changes in cellular carbohydrate abundance such as occurs during fasting to feeding metabolic transition. Refeeding stimulates MLXIPL/ChREBP transcription factor, leading to increased BCKDK to PPM1K expression ratio, phosphorylation and activation of ACLY that ultimately results in the generation of malonyl-CoA and oxaloacetate immediate substrates of de novo lipogenesis and glucogenesis, respectively (PubMed:29779826). Recognizes phosphosites having SxxE/D canonical motif (PubMed:29779826).<ref>PMID:24449431</ref> <ref>PMID:29779826</ref> <ref>PMID:37558654</ref> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Kack H]] | |||
[[Category: Wissler L]] | |||