6htm: Difference between revisions
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==X-ray structure of the tryptophan lyase NosL in complex with bound tryptamin== | |||
<StructureSection load='6htm' size='340' side='right'caption='[[6htm]], [[Resolution|resolution]] 1.70Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[6htm]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_actuosus Streptomyces actuosus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6HTM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6HTM 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]] 1.7Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=5AD:5-DEOXYADENOSINE'>5AD</scene>, <scene name='pdbligand=BR:BROMIDE+ION'>BR</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MET:METHIONINE'>MET</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene>, <scene name='pdbligand=TSS:2-(1H-INDOL-3-YL)ETHANAMINE'>TSS</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=6htm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6htm OCA], [https://pdbe.org/6htm PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6htm RCSB], [https://www.ebi.ac.uk/pdbsum/6htm PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6htm ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/C6FX51_STRAS C6FX51_STRAS] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The radical S-adenosyl-l-methionine tryptophan lyase uses radical-based chemistry to convert l-tryptophan into 3-methyl-2-indolic acid, a fragment in the biosynthesis of the thiopeptide antibiotic nosiheptide. This complex reaction involves several successive steps corresponding to (i) the activation by a specific hydrogen-atom abstraction, (ii) an unprecedented *CO2(-) radical migration, (iii) a cyanide fragment release, and (iv) the termination of the radical-based reaction. In vitro study of this reaction is made more difficult because the enzyme produces a significant amount of a shunt product instead of the natural product. Here, using a combination of X-ray crystallography, electron paramagnetic resonance spectroscopy, and quantum and hybrid quantum mechanical/molecular mechanical calculations, we have deciphered the fine mechanism of the key *CO2(-) radical migration, highlighting how the preorganized active site of the protein tightly controls this reaction. | |||
Radical S-Adenosyl-l-methionine Tryptophan Lyase (NosL): How the Protein Controls the Carboxyl Radical *CO2(-) Migration.,Amara P, Mouesca JM, Bella M, Martin L, Saragaglia C, Gambarelli S, Nicolet Y J Am Chem Soc. 2018 Nov 16. doi: 10.1021/jacs.8b09142. PMID:30418774<ref>PMID:30418774</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: | <div class="pdbe-citations 6htm" style="background-color:#fffaf0;"></div> | ||
[[Category: | == References == | ||
[[Category: | <references/> | ||
[[Category: | __TOC__ | ||
[[Category: | </StructureSection> | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Streptomyces actuosus]] | |||
[[Category: Amara P]] | |||
[[Category: Bella M]] | |||
[[Category: Gambarelli S]] | |||
[[Category: Mouesca JM]] | |||
[[Category: Nicolet Y]] | |||
[[Category: Saragaglia C]] | |||
Latest revision as of 11:39, 24 January 2024
X-ray structure of the tryptophan lyase NosL in complex with bound tryptamin
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