2b4k: Difference between revisions
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<StructureSection load='2b4k' size='340' side='right'caption='[[2b4k]], [[Resolution|resolution]] 3.30Å' scene=''> | <StructureSection load='2b4k' size='340' side='right'caption='[[2b4k]], [[Resolution|resolution]] 3.30Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2b4k]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/ | <table><tr><td colspan='2'>[[2b4k]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Acetobacter_pasteurianus Acetobacter pasteurianus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2B4K OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2B4K FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PG9:D-PHENYLGLYCINE'>PG9</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PG9:D-PHENYLGLYCINE'>PG9</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=2b4k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2b4k OCA], [https://pdbe.org/2b4k PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2b4k RCSB], [https://www.ebi.ac.uk/pdbsum/2b4k PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2b4k 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=2b4k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2b4k OCA], [https://pdbe.org/2b4k PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2b4k RCSB], [https://www.ebi.ac.uk/pdbsum/2b4k PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2b4k ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/Q8VRK8_ACEPA Q8VRK8_ACEPA] | |||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Acetobacter pasteurianus]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Barends | [[Category: Barends TRM]] | ||
[[Category: Dijkstra | [[Category: Dijkstra BW]] | ||
[[Category: Janssen | [[Category: Janssen DB]] | ||
[[Category: Jekel | [[Category: Jekel PA]] | ||
[[Category: Polderman-Tijmes | [[Category: Polderman-Tijmes JJ]] | ||
[[Category: Williams | [[Category: Williams C]] | ||
[[Category: Wybenga | [[Category: Wybenga G]] | ||
Revision as of 12:57, 21 December 2022
Acetobacter turbidans alpha-amino acid ester hydrolase complexed with phenylglycineAcetobacter turbidans alpha-amino acid ester hydrolase complexed with phenylglycine
Structural highlights
FunctionEvolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe alpha-amino acid ester hydrolase (AEH) from Acetobacter turbidans is a bacterial enzyme catalyzing the hydrolysis and synthesis of beta-lactam antibiotics. The crystal structures of the native enzyme, both unliganded and in complex with the hydrolysis product D-phenylglycine are reported, as well as the structures of an inactive mutant (S205A) complexed with the substrate ampicillin, and an active site mutant (Y206A) with an increased tendency to catalyze antibiotic production rather than hydrolysis. The structure of the native enzyme shows an acyl binding pocket, in which D-phenylglycine binds, and an additional space that is large enough to accommodate the beta-lactam moiety of an antibiotic. In the S205A mutant, ampicillin binds in this pocket in a non-productive manner, making extensive contacts with the side chain of Tyr(112), which also participates in oxyanion hole formation. In the Y206A mutant, the Tyr(112) side chain has moved with its hydroxyl group toward the catalytic serine. Because this changes the properties of the beta-lactam binding site, this could explain the increased beta-lactam transferase activity of this mutant. Acetobacter turbidans alpha-amino acid ester hydrolase: how a single mutation improves an antibiotic-producing enzyme.,Barends TR, Polderman-Tijmes JJ, Jekel PA, Williams C, Wybenga G, Janssen DB, Dijkstra BW J Biol Chem. 2006 Mar 3;281(9):5804-10. Epub 2005 Dec 23. PMID:16377627[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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