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4ao4
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | + | ==Structural Determinants of the beta-Selectivity of a Bacterial Aminotransferase== | |
| + | <StructureSection load='4ao4' size='340' side='right'caption='[[4ao4]], [[Resolution|resolution]] 1.95Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[4ao4]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Mesorhizobium_sp._LUK Mesorhizobium sp. LUK]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4AO4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4AO4 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]] 1.95Å</td></tr> | ||
| + | <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=PLK:(3R)-3-[({3-HYDROXY-2-METHYL-5-[(PHOSPHONOOXY)METHYL]PYRIDIN-4-YL}METHYL)AMINO]-5-METHYLHEXANOIC+ACID'>PLK</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=4ao4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ao4 OCA], [https://pdbe.org/4ao4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ao4 RCSB], [https://www.ebi.ac.uk/pdbsum/4ao4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ao4 ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/A3EYF7_9HYPH A3EYF7_9HYPH] | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Chiral beta-amino acids occur as constituents of various natural and synthetic compounds with potentially useful bioactivities. The pyridoxal-5'-phosphate dependent (S)-selective transaminase from Mesorhizobium sp. LUK (MesAT) is a fold type I aminotransferase that can be used for the preparation of enantiopure beta-phenylalanine and derivatives thereof. Using X-ray crystallography, we solved structures of MesAT in complex with (S)-beta-phenylalanine, (R)-3-amino-5-methylhexanoic acid, 2-oxoglutarate, and the inhibitor 2-aminooxyacetic acid, which allowed us to unveil the basis of the amino acid specificity and enantioselectivity of this enzyme. The binding pocket of the side chain of a beta-amino acid is located on the 3'-O side of the PLP cofactor. The same binding pocket is utilized by MesAT to bind the alpha-carboxylate group of an alpha-amino acid. A beta-amino acid thus binds in a reverse orientation in the active site of MesAT as compared to an alpha-amino acid. Such a binding mode has not been reported before for any PLP-dependent aminotransferase and shows that the active site of MesAT has specifically evolved to accommodate both beta- and alpha-amino acids. | ||
| - | + | Structural Determinants of the beta-Selectivity of a Bacterial Aminotransferase.,Wybenga GG, Crismaru CG, Janssen DB, Dijkstra BW J Biol Chem. 2012 Jun 28. PMID:22745123<ref>PMID:22745123</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| + | </div> | ||
| + | <div class="pdbe-citations 4ao4" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Mesorhizobium sp. LUK]] | ||
| + | [[Category: Crismaru CG]] | ||
| + | [[Category: Dijkstra BW]] | ||
| + | [[Category: Janssen DB]] | ||
| + | [[Category: Wybenga GG]] | ||
Current revision
Structural Determinants of the beta-Selectivity of a Bacterial Aminotransferase
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