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| | <StructureSection load='2xh1' size='340' side='right'caption='[[2xh1]], [[Resolution|resolution]] 2.10Å' scene=''> | | <StructureSection load='2xh1' size='340' side='right'caption='[[2xh1]], [[Resolution|resolution]] 2.10Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2xh1]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2XH1 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=2XH1 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2xh1]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2XH1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2XH1 FirstGlance]. <br> |
| | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BF5:(3S)-10-(4-AMINOPIPERAZIN-1-YL)-9-FLUORO-7-HYDROXY-3-METHYL-2,3-DIHYDRO-8H-[1,4]OXAZINO[2,3,4-IJ]QUINOLINE-6-CARBOXYLATE'>BF5</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=IOD:IODIDE+ION'>IOD</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></td></tr> | | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BF5:(3S)-10-(4-AMINOPIPERAZIN-1-YL)-9-FLUORO-7-HYDROXY-3-METHYL-2,3-DIHYDRO-8H-[1,4]OXAZINO[2,3,4-IJ]QUINOLINE-6-CARBOXYLATE'>BF5</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=IOD:IODIDE+ION'>IOD</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2vgz|2vgz]]</td></tr> | + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2vgz|2vgz]]</div></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=2xh1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2xh1 OCA], [http://pdbe.org/2xh1 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2xh1 RCSB], [http://www.ebi.ac.uk/pdbsum/2xh1 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2xh1 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=2xh1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2xh1 OCA], [https://pdbe.org/2xh1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2xh1 RCSB], [https://www.ebi.ac.uk/pdbsum/2xh1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2xh1 ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/AADAT_HUMAN AADAT_HUMAN]] Transaminase with broad substrate specificity. Has transaminase activity towards aminoadipate, kynurenine, methionine and glutamate. Shows activity also towards tryptophan, aspartate and hydroxykynurenine. Accepts a variety of oxo-acids as amino-group acceptors, with a preference for 2-oxoglutarate, 2-oxocaproic acid, phenylpyruvate and alpha-oxo-gamma-methiol butyric acid. Can also use glyoxylate as amino-group acceptor (in vitro).<ref>PMID:18620547</ref> | + | [[https://www.uniprot.org/uniprot/AADAT_HUMAN AADAT_HUMAN]] Transaminase with broad substrate specificity. Has transaminase activity towards aminoadipate, kynurenine, methionine and glutamate. Shows activity also towards tryptophan, aspartate and hydroxykynurenine. Accepts a variety of oxo-acids as amino-group acceptors, with a preference for 2-oxoglutarate, 2-oxocaproic acid, phenylpyruvate and alpha-oxo-gamma-methiol butyric acid. Can also use glyoxylate as amino-group acceptor (in vitro).<ref>PMID:18620547</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| Structural highlights
Function
[AADAT_HUMAN] Transaminase with broad substrate specificity. Has transaminase activity towards aminoadipate, kynurenine, methionine and glutamate. Shows activity also towards tryptophan, aspartate and hydroxykynurenine. Accepts a variety of oxo-acids as amino-group acceptors, with a preference for 2-oxoglutarate, 2-oxocaproic acid, phenylpyruvate and alpha-oxo-gamma-methiol butyric acid. Can also use glyoxylate as amino-group acceptor (in vitro).[1]
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
Fluctuations in the brain levels of the neuromodulator kynurenic acid may control cognitive processes and play a causative role in several catastrophic brain diseases. Elimination of the pyridoxal 5'-phosphate dependent enzyme kynurenine aminotransferase II reduces cerebral kynurenic acid synthesis and has procognitive effects. The present description of the crystal structure of human kynurenine aminotransferase II in complex with its potent and specific primary amine-bearing fluoroquinolone inhibitor (S)-(-)-9-(4-aminopiperazin-1-yl)-8-fluoro-3-methyl-6-oxo-2,3-dihydro-6H-1 -oxa-3a-azaphenalene-5-carboxylic acid (BFF-122) should facilitate the structure-based development of cognition-enhancing drugs. From a medicinal chemistry perspective our results demonstrate that the issue of inhibitor specificity for highly conserved PLP-dependent enzymes could be successfully addressed.
Crystal structure-based selective targeting of the pyridoxal 5'-phosphate dependent enzyme kynurenine aminotransferase II for cognitive enhancement.,Rossi F, Valentina C, Garavaglia S, Sathyasaikumar KV, Schwarcz R, Kojima S, Okuwaki K, Ono S, Kajii Y, Rizzi M J Med Chem. 2010 Aug 12;53(15):5684-9. PMID:20684605[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Han Q, Cai T, Tagle DA, Robinson H, Li J. Substrate specificity and structure of human aminoadipate aminotransferase/kynurenine aminotransferase II. Biosci Rep. 2008 Aug;28(4):205-15. PMID:18620547 doi:10.1042/BSR20080085
- ↑ Rossi F, Valentina C, Garavaglia S, Sathyasaikumar KV, Schwarcz R, Kojima S, Okuwaki K, Ono S, Kajii Y, Rizzi M. Crystal structure-based selective targeting of the pyridoxal 5'-phosphate dependent enzyme kynurenine aminotransferase II for cognitive enhancement. J Med Chem. 2010 Aug 12;53(15):5684-9. PMID:20684605 doi:10.1021/jm100464k
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