5n81: Difference between revisions
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New page: '''Unreleased structure''' The entry 5n81 is ON HOLD until Paper Publication Authors: Niquille, D.L., Hansen, D.A., Mori, T., Fercher, D., Kries, H., Hilvert, D. Description: Crystal s... |
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==Crystal structure of an engineered TycA variant in complex with an O-propargyl-beta-Tyr-AMP analog== | |||
<StructureSection load='5n81' size='340' side='right'caption='[[5n81]], [[Resolution|resolution]] 1.60Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5n81]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Brevibacillus_parabrevis Brevibacillus parabrevis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5N81 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5N81 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]] 1.6Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=8Q2:[(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methyl+~{N}-[(3~{S})-3-azanyl-3-(4-prop-2-ynoxyphenyl)propanoyl]sulfamate'>8Q2</scene>, <scene name='pdbligand=BTB:2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>BTB</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=5n81 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5n81 OCA], [https://pdbe.org/5n81 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5n81 RCSB], [https://www.ebi.ac.uk/pdbsum/5n81 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5n81 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/TYCA_BREPA TYCA_BREPA] In the first step of peptide synthesis this enzyme activates phenylalanine and racemizes it to the D-isomer. | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Biosynthetic modification of nonribosomal peptide backbones represents a potentially powerful strategy to modulate the structure and properties of an important class of therapeutics. Using a high-throughput assay for catalytic activity, we show here that an L-Phe-specific module of an archetypal nonribosomal peptide synthetase can be reprogrammed to accept and process the backbone-modified amino acid (S)-beta-Phe with near-native specificity and efficiency. A co-crystal structure with a non-hydrolysable aminoacyl-AMP analogue reveals the origins of the 40,000-fold alpha/beta-specificity switch, illuminating subtle but precise remodelling of the active site. When the engineered catalyst was paired with downstream module(s), (S)-beta-Phe-containing peptides were produced at preparative scale in vitro (~1 mmol) and high titres in vivo (~100 mg l(-1)), highlighting the potential of biosynthetic pathway engineering for the construction of novel nonribosomal beta-frameworks. | |||
Nonribosomal biosynthesis of backbone-modified peptides.,Niquille DL, Hansen DA, Mori T, Fercher D, Kries H, Hilvert D Nat Chem. 2018 Mar;10(3):282-287. doi: 10.1038/nchem.2891. Epub 2017 Nov 20. PMID:29461527<ref>PMID:29461527</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: Fercher | <div class="pdbe-citations 5n81" style="background-color:#fffaf0;"></div> | ||
[[Category: | == References == | ||
[[Category: Hilvert | <references/> | ||
[[Category: Kries | __TOC__ | ||
[[Category: | </StructureSection> | ||
[[Category: Niquille | [[Category: Brevibacillus parabrevis]] | ||
[[Category: Large Structures]] | |||
[[Category: Fercher D]] | |||
[[Category: Hansen DA]] | |||
[[Category: Hilvert D]] | |||
[[Category: Kries H]] | |||
[[Category: Mori T]] | |||
[[Category: Niquille DL]] | |||
Latest revision as of 12:33, 15 November 2023
Crystal structure of an engineered TycA variant in complex with an O-propargyl-beta-Tyr-AMP analog
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