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| | <StructureSection load='2dtj' size='340' side='right'caption='[[2dtj]], [[Resolution|resolution]] 1.58Å' scene=''> | | <StructureSection load='2dtj' size='340' side='right'caption='[[2dtj]], [[Resolution|resolution]] 1.58Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2dtj]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"micrococcus_glutamicus"_kinoshita_et_al._1958 "micrococcus glutamicus" kinoshita et al. 1958]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DTJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2DTJ FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2dtj]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/"micrococcus_glutamicus"_kinoshita_et_al._1958 "micrococcus glutamicus" kinoshita et al. 1958]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DTJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2DTJ FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=THR:THREONINE'>THR</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=THR:THREONINE'>THR</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2dt9|2dt9]]</td></tr> | + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2dt9|2dt9]]</div></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Aspartate_kinase Aspartate kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.2.4 2.7.2.4] </span></td></tr> | + | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Aspartate_kinase Aspartate kinase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.2.4 2.7.2.4] </span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2dtj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2dtj OCA], [http://pdbe.org/2dtj PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2dtj RCSB], [http://www.ebi.ac.uk/pdbsum/2dtj PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2dtj ProSAT]</span></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=2dtj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2dtj OCA], [https://pdbe.org/2dtj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2dtj RCSB], [https://www.ebi.ac.uk/pdbsum/2dtj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2dtj ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/AK_CORGL AK_CORGL]] Catalyzes the phosphorylation of the beta-carboxyl group of aspartic acid with ATP to yield 4-phospho-L-aspartate, which is involved in the branched biosynthetic pathway leading to the biosynthesis of amino acids lysine, threonine, isoleucine and methionine.<ref>PMID:17350037</ref> <ref>PMID:20573952</ref> | + | [[https://www.uniprot.org/uniprot/AK_CORGL AK_CORGL]] Catalyzes the phosphorylation of the beta-carboxyl group of aspartic acid with ATP to yield 4-phospho-L-aspartate, which is involved in the branched biosynthetic pathway leading to the biosynthesis of amino acids lysine, threonine, isoleucine and methionine.<ref>PMID:17350037</ref> <ref>PMID:20573952</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| Structural highlights
Function
[AK_CORGL] Catalyzes the phosphorylation of the beta-carboxyl group of aspartic acid with ATP to yield 4-phospho-L-aspartate, which is involved in the branched biosynthetic pathway leading to the biosynthesis of amino acids lysine, threonine, isoleucine and methionine.[1] [2]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Aspartate kinase (AK) catalyzes the first step of the biosynthesis of the aspartic acid family amino acids, and is regulated via feedback inhibition by end-products including Thr and Lys. To elucidate the mechanism of this inhibition, we determined the crystal structure of the regulatory subunit of AK from Corynebacterium glutamicum at 1.58 A resolution in the Thr-binding form, the first crystal structure of the regulatory subunit of alpha(2)beta(2)-type AK. The regulatory subunit contains two ACT domain motifs per monomer and is arranged as a dimer. Two non-equivalent ACT domains from different chains form an effector-binding unit that binds a single Thr molecule, and the resulting two effector-binding units of the dimer associate perpendicularly in a face-to-face manner. The regulatory subunit is a monomer in the absence of Thr but becomes a dimer by adding Thr. The dimerization is eliminated in mutant AKs with changes in the Thr-binding region, suggesting that the dimerization induced by Thr binding is a key step in the inhibitory mechanism of AK from C. glutamicum. A putative Lys-binding site and the inhibitory mechanism of CgAK are discussed.
Structural Insight into concerted inhibition of alpha 2 beta 2-type aspartate kinase from Corynebacterium glutamicum.,Yoshida A, Tomita T, Kurihara T, Fushinobu S, Kuzuyama T, Nishiyama M J Mol Biol. 2007 Apr 27;368(2):521-36. Epub 2007 Feb 20. PMID:17350037[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Yoshida A, Tomita T, Kurihara T, Fushinobu S, Kuzuyama T, Nishiyama M. Structural Insight into concerted inhibition of alpha 2 beta 2-type aspartate kinase from Corynebacterium glutamicum. J Mol Biol. 2007 Apr 27;368(2):521-36. Epub 2007 Feb 20. PMID:17350037 doi:10.1016/j.jmb.2007.02.017
- ↑ Yoshida A, Tomita T, Kuzuyama T, Nishiyama M. Mechanism of concerted inhibition of alpha2beta2-type hetero-oligomeric aspartate kinase from Corynebacterium glutamicum. J Biol Chem. 2010 Aug 27;285(35):27477-86. Epub 2010 Jun 23. PMID:20573952 doi:10.1074/jbc.M110.111153
- ↑ Yoshida A, Tomita T, Kurihara T, Fushinobu S, Kuzuyama T, Nishiyama M. Structural Insight into concerted inhibition of alpha 2 beta 2-type aspartate kinase from Corynebacterium glutamicum. J Mol Biol. 2007 Apr 27;368(2):521-36. Epub 2007 Feb 20. PMID:17350037 doi:10.1016/j.jmb.2007.02.017
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