4gm4
From Proteopedia
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4gm4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_putida Pseudomonas putida]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4GM4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4GM4 FirstGlance]. <br> | <table><tr><td colspan='2'>[[4gm4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_putida Pseudomonas putida]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4GM4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4GM4 FirstGlance]. <br> | ||
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=TZD:2-{3-[(4-AMINO-2-METHYLPYRIMIDIN-5-YL)METHYL]-4-METHYL-2-OXO-2,3-DIHYDRO-1,3-THIAZOL-5-YL}ETHYL+TRIHYDROGEN+DIPHOSPHATE'>TZD</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.28Å</td></tr> |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=TZD:2-{3-[(4-AMINO-2-METHYLPYRIMIDIN-5-YL)METHYL]-4-METHYL-2-OXO-2,3-DIHYDRO-1,3-THIAZOL-5-YL}ETHYL+TRIHYDROGEN+DIPHOSPHATE'>TZD</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=4gm4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gm4 OCA], [https://pdbe.org/4gm4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4gm4 RCSB], [https://www.ebi.ac.uk/pdbsum/4gm4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4gm4 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=4gm4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gm4 OCA], [https://pdbe.org/4gm4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4gm4 RCSB], [https://www.ebi.ac.uk/pdbsum/4gm4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4gm4 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/MDLC_PSEPU MDLC_PSEPU] | [https://www.uniprot.org/uniprot/MDLC_PSEPU MDLC_PSEPU] | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | It is widely accepted that, in thiamin diphosphate (ThDP)-dependent enzymes, much of the rate acceleration is provided by the cofactor. Inter alia, the reactive conformation of ThDP, known as the V-conformation, has been attributed to the presence of a bulky hydrophobic residue located directly below the cofactor. Here we report the use of site-saturation mutagenesis to generate variants of this residue (Leu403) in benzoylformate decarboxylase. The observed 3 orders of magnitude range in kcat/Km values suggested that conformational changes in the cofactor could be influencing catalysis. However, X-ray structures of several variants were determined, and there was remarkably little change in ThDP conformation. Rather, it seemed that, once the V-conformation was attained, residue size and hydrophobicity were more important for enzyme activity. | ||
| - | |||
| - | A bulky hydrophobic residue is not required to maintain the v-conformation of enzyme-bound thiamin diphosphate.,Andrews FH, Tom AR, Gunderman PR, Novak WR, McLeish MJ Biochemistry. 2013 May 7;52(18):3028-30. doi: 10.1021/bi400368j. Epub 2013 Apr, 23. PMID:23607689<ref>PMID:23607689</ref> | ||
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 4gm4" style="background-color:#fffaf0;"></div> | ||
| - | == References == | ||
| - | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Current revision
Crystal Structure of Benzoylformate Decarboxylase Mutant L403I
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