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| | <StructureSection load='4b7s' size='340' side='right'caption='[[4b7s]], [[Resolution|resolution]] 1.84Å' scene=''> | | <StructureSection load='4b7s' size='340' side='right'caption='[[4b7s]], [[Resolution|resolution]] 1.84Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4b7s]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/As_4.1526 As 4.1526]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4B7S OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4B7S FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4b7s]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_venezuelae Streptomyces venezuelae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4B7S OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4B7S FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=QLE:[(3R,4S,5S,7R,9E,11R,12R)-12-ETHYL-3,5,7,11-TETRAMETHYL-2,8-BIS(OXIDANYLIDENE)-1-OXACYCLODODEC-9-EN-4-YL]+3-(DIMETHYLAMINO)PROPANOATE'>QLE</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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]] 1.84Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2bvj|2bvj]], [[2c6h|2c6h]], [[2c7x|2c7x]], [[2ca0|2ca0]], [[2cd8|2cd8]], [[2vz7|2vz7]], [[2vzm|2vzm]], [[2whw|2whw]], [[2wi9|2wi9]], [[4b7d|4b7d]], [[3zk5|3zk5]]</div></td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=QLE:[(3R,4S,5S,7R,9E,11R,12R)-12-ETHYL-3,5,7,11-TETRAMETHYL-2,8-BIS(OXIDANYLIDENE)-1-OXACYCLODODEC-9-EN-4-YL]+3-(DIMETHYLAMINO)PROPANOATE'>QLE</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=4b7s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4b7s OCA], [https://pdbe.org/4b7s PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4b7s RCSB], [https://www.ebi.ac.uk/pdbsum/4b7s PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4b7s 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=4b7s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4b7s OCA], [https://pdbe.org/4b7s PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4b7s RCSB], [https://www.ebi.ac.uk/pdbsum/4b7s PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4b7s ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/PIKC_STRVZ PIKC_STRVZ] Catalyzes the hydroxylation of narbomycin to give rise to pikromycin, and of 10-deoxymethymycin (YC-17) to give rise to methymycin and neomethymycin during macrolide antibiotic biosynthesis. In addition, produces low amounts of neopicromycin, novapikromycin and novamethymycin. Requires the participation of a ferredoxin and a ferredoxin reductase for the transfer of electrons from NADPH to the monooxygenase.<ref>PMID:16825192</ref> <ref>PMID:19124459</ref> <ref>PMID:19833867</ref> <ref>PMID:24627965</ref> <ref>PMID:9778370</ref> <ref>PMID:9831532</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: As 4 1526]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Podust, L M]] | + | [[Category: Streptomyces venezuelae]] |
| - | [[Category: Inhibitor]] | + | [[Category: Podust LM]] |
| - | [[Category: Monooxygenase]]
| + | |
| - | [[Category: Oxidoreductase]]
| + | |
| - | [[Category: Pikromycin biosynthesis]]
| + | |
| Structural highlights
Function
PIKC_STRVZ Catalyzes the hydroxylation of narbomycin to give rise to pikromycin, and of 10-deoxymethymycin (YC-17) to give rise to methymycin and neomethymycin during macrolide antibiotic biosynthesis. In addition, produces low amounts of neopicromycin, novapikromycin and novamethymycin. Requires the participation of a ferredoxin and a ferredoxin reductase for the transfer of electrons from NADPH to the monooxygenase.[1] [2] [3] [4] [5] [6]
Publication Abstract from PubMed
Highly regioselective remote hydroxylation of a natural product scaffold is demonstrated by exploiting the anchoring mechanism of the biosynthetic P450 monooxygenase PikCD50N-RhFRED. Previous studies have revealed structural and biochemical evidence for the role of a salt bridge between the desosamine N,N-dimethylamino functionality of the natural substrate YC-17 and carboxylate residues within the active site of the enzyme, and selectivity in subsequent C-H bond functionalization. In the present study, a substrate-engineering approach was conducted that involves replacing desosamine with varied synthetic N,N-dimethylamino anchoring groups. We then determined their ability to mediate enzymatic total turnover numbers approaching or exceeding that of the natural sugar, while enabling ready introduction and removal of these amino anchoring groups from the substrate. The data establish that the size, stereochemistry, and rigidity of the anchoring group influence the regioselectivity of enzymatic hydroxylation. The natural anchoring group desosamine affords a 1:1 mixture of regioisomers, while synthetic anchors shift YC-17 analogue C-10/C-12 hydroxylation from 20:1 to 1:4. The work demonstrates the utility of substrate engineering as an orthogonal approach to protein engineering for modulation of regioselective C-H functionalization in biocatalysis.
Directing Group-Controlled Regioselectivity in an Enzymatic C-H Bond Oxygenation.,Negretti S, Narayan AR, Chiou KC, Kells PM, Stachowski JL, Hansen DA, Podust LM, Montgomery J, Sherman DH J Am Chem Soc. 2014 Mar 21. PMID:24627965[7]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Sherman DH, Li S, Yermalitskaya LV, Kim Y, Smith JA, Waterman MR, Podust LM. The structural basis for substrate anchoring, active site selectivity, and product formation by P450 PikC from Streptomyces venezuelae. J Biol Chem. 2006 Sep 8;281(36):26289-97. Epub 2006 Jul 6. PMID:16825192 doi:10.1074/jbc.M605478200
- ↑ Li S, Ouellet H, Sherman DH, Podust LM. Analysis of transient and catalytic desosamine-binding pockets in cytochrome P-450 PikC from Streptomyces venezuelae. J Biol Chem. 2009 Feb 27;284(9):5723-30. Epub 2009 Jan 4. PMID:19124459 doi:10.1074/jbc.M807592200
- ↑ Li S, Chaulagain MR, Knauff AR, Podust LM, Montgomery J, Sherman DH. Selective oxidation of carbolide C-H bonds by an engineered macrolide P450 mono-oxygenase. Proc Natl Acad Sci U S A. 2009 Oct 15. PMID:19833867
- ↑ Negretti S, Narayan AR, Chiou KC, Kells PM, Stachowski JL, Hansen DA, Podust LM, Montgomery J, Sherman DH. Directing Group-Controlled Regioselectivity in an Enzymatic C-H Bond Oxygenation. J Am Chem Soc. 2014 Mar 21. PMID:24627965 doi:http://dx.doi.org/10.1021/ja5016052
- ↑ Betlach MC, Kealey JT, Ashley GW, McDaniel R. Characterization of the macrolide P-450 hydroxylase from Streptomyces venezuelae which converts narbomycin to picromycin. Biochemistry. 1998 Oct 20;37(42):14937-42. PMID:9778370 doi:10.1021/bi981699c
- ↑ Xue Y, Wilson D, Zhao L, Liu Hw, Sherman DH. Hydroxylation of macrolactones YC-17 and narbomycin is mediated by the pikC-encoded cytochrome P450 in Streptomyces venezuelae. Chem Biol. 1998 Nov;5(11):661-7. PMID:9831532 doi:10.1016/s1074-5521(98)90293-9
- ↑ Negretti S, Narayan AR, Chiou KC, Kells PM, Stachowski JL, Hansen DA, Podust LM, Montgomery J, Sherman DH. Directing Group-Controlled Regioselectivity in an Enzymatic C-H Bond Oxygenation. J Am Chem Soc. 2014 Mar 21. PMID:24627965 doi:http://dx.doi.org/10.1021/ja5016052
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