6k30
From Proteopedia
(Difference between revisions)
| Line 1: | Line 1: | ||
| - | '''Unreleased structure''' | ||
| - | + | ==Binding pose 2 of 2-CF3 bound AsqJ complex== | |
| - | + | <StructureSection load='6k30' size='340' side='right'caption='[[6k30]], [[Resolution|resolution]] 2.68Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | + | <table><tr><td colspan='2'>[[6k30]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6K30 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6K30 FirstGlance]. <br> | |
| - | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CV3:(3~{Z})-4-methyl-3-[[4-(trifluoromethyl)phenyl]methylidene]-1~{H}-1,4-benzodiazepine-2,5-dione'>CV3</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=SIN:SUCCINIC+ACID'>SIN</scene></td></tr> | |
| - | [[Category: | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6k30 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6k30 OCA], [http://pdbe.org/6k30 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6k30 RCSB], [http://www.ebi.ac.uk/pdbsum/6k30 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6k30 ProSAT]</span></td></tr> |
| + | </table> | ||
| + | == Function == | ||
| + | [[http://www.uniprot.org/uniprot/ASQJ_EMENI ASQJ_EMENI]] Iron/alpha-ketoglutarate-dependent dioxygenase; part of the gene cluster that mediates the biosynthesis of the aspoquinolone mycotoxins (PubMed:25251934, PubMed:26553478). The first stage is catalyzed by the nonribosomal pepdide synthetase asqK that condenses anthranilic acid and O-methyl-L-tyrosine to produce 4'-methoxycyclopeptin (PubMed:25251934). AsqK is also able to use anthranilic acid and L-phenylalanine as substrates to produce cyclopeptin, but at a tenfold lower rate (PubMed:25251934). 4'-methoxycyclopeptin is then converted to 4'-methoxydehydrocyclopeptin by the ketoglutarate-dependent dioxygenase asqJ through dehydrogenation to form a double bond between C-alpha and C-beta of the O-methyltyrosine side chain (PubMed:25251934, PubMed:26553478). AsqJ also converts its first product 4'-methoxydehydrocyclopeptin to 4'-methoxycyclopenin (PubMed:25251934). AsqJ is a very unique dioxygenase which is capable of catalyzing radical-mediated dehydrogenation and epoxidation reactions sequentially on a 6,7-benzo-diazepinedione substrate in the 4'-methoxyviridicatin biosynthetic pathway (PubMed:25251934). The following conversion of 4'-methoxycyclopenin into 4'-methoxyviridicatin proceeds non-enzymatically (PubMed:25251934). AsqJ is also capable of converting cyclopeptin into dehydrocyclopeptin and cyclopenin in a sequential fashion (PubMed:25251934). Cyclopenin can be converted into viridicatin non-enzymatically (PubMed:25251934). 4'-methoxyviridicatin likely acts as a precursor of quinolone natural products, such as aspoquinolones, peniprequinolones, penigequinolones, and yaequinolones (PubMed:25251934). Further characterization of the remaining genes in the cluster has still to be done to determine the exact identity of quinolone products this cluster is responsible for biosynthesizing (PubMed:25251934).<ref>PMID:25251934</ref> <ref>PMID:26553478</ref> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Chan, N L]] | ||
| + | [[Category: Liao, H J]] | ||
| + | [[Category: 2-cf3 binding]] | ||
| + | [[Category: Oxidoreductase]] | ||
Revision as of 09:38, 18 March 2020
Binding pose 2 of 2-CF3 bound AsqJ complex
| |||||||||||
