5mpv: Difference between revisions

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 == Structural highlights ==
 <table><tr><td colspan='2'>[[5mpv]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis_H37Rv Mycobacterium tuberculosis H37Rv]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5MPV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5MPV FirstGlance]. <br>
-</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=5mpv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5mpv OCA], [https://pdbe.org/5mpv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5mpv RCSB], [https://www.ebi.ac.uk/pdbsum/5mpv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5mpv ProSAT]</span></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]] 1.49&#8491;</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=5mpv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5mpv OCA], [https://pdbe.org/5mpv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5mpv RCSB], [https://www.ebi.ac.uk/pdbsum/5mpv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5mpv ProSAT]</span></td></tr>
 </table>
 == Function ==
 [https://www.uniprot.org/uniprot/CHMU_MYCTU CHMU_MYCTU] Catalyzes the Claisen rearrangement of chorismate to prephenate. Probably involved in the aromatic amino acid biosynthesis.<ref>PMID:15737998</ref> <ref>PMID:18727669</ref> <ref>PMID:19556970</ref>
-<div style="background-color:#fffaf0;">
-== Publication Abstract from PubMed ==
-Chorismate mutase (CM), an essential enzyme at the branch-point of the shikimate pathway, is required for the biosynthesis of phenylalanine and tyrosine in bacteria, archaea, plants, and fungi. MtCM, the CM from Mycobacterium tuberculosis, has less than 1% of the catalytic efficiency of a typical natural CM and requires complex formation with 3-deoxy-d-arabino-heptulosonate 7-phosphate synthase for high activity. To explore the full potential of MtCM for catalyzing its native reaction, we applied diverse iterative cycles of mutagenesis and selection, thereby raising k(cat)/K(m) 270-fold to 5 x 10(5)m(-1)s(-1), which is even higher than for the complex. Moreover, the evolutionarily optimized autonomous MtCM, which had 11 of its 90 amino acids exchanged, was stabilized compared with its progenitor, as indicated by a 9 degrees C increase in melting temperature. The 1.5 A crystal structure of the top-evolved MtCM variant reveals the molecular underpinnings of this activity boost. Some acquired residues (e.g. Pro(52) and Asp(55)) are conserved in naturally efficient CMs, but most of them lie beyond the active site. Our evolutionary trajectories reached a plateau at the level of the best natural enzymes, suggesting that we have exhausted the potential of MtCM. Taken together, these findings show that the scaffold of MtCM, which naturally evolved for mediocrity to enable inter-enzyme allosteric regulation of the shikimate pathway, is inherently capable of high activity.
-Evolving the naturally compromised chorismate mutase from Mycobacterium tuberculosis to top performance.,Fahrig-Kamarauskait J, Wurth-Roderer K, Thorbjornsrud HV, Mailand S, Krengel U, Kast P J Biol Chem. 2020 Dec 18;295(51):17514-17534. doi: 10.1074/jbc.RA120.014924. PMID:33453995<ref>PMID:33453995</ref>
-From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-</div>
-<div class="pdbe-citations 5mpv" style="background-color:#fffaf0;"></div>
 ==See Also==