Protein |
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| Protein Name | Narbonolide/10-deoxymethynolide synthase PikA4, module 6 | |
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| #PDB ID | 3 | |
| Organism | Streptomyces venezuelae | |
| Uniprot ID/ACC | Q9ZGI2 (PIKA4_STRVZ) | |
| Synonym(s) |
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| Gene Symbol | pikAIV | |
| Gene ID | - | |
| Sequence | MTSSNEQLVDALRASLKENEELRKESRRRADRRQEPMAIVGMSCRFAGGIRSPEDLWDAVAAGKDLVSEVPEERGWDIDSLYDPVPGRKGTTYVRNAAFLDDAAGFDAAFFGISPREALAMDPQQRQLLEASWEVFERAGIDPASVRGTDVGVYVGCGYQDYAPDIRVAPEGTGGYVVTGNSSAVASGRIAYSLGLEGPAVTVDTACSSSLVALHLALKGLRNGDCSTALVGGVAVLATPGAFIEFSSQQAMAADGRTKGFASAADGLAWGEGVAVLLLERLSDARRKGHRVLAVVRGSAINQDGASNGLTAPHGPSQQHLIRQALADARLTSSDVDVVEGHGTGTRLGDPIEAQALLATYGQGRAPGQPLRLGTLKSNIGHTQAASGVAGVIKMVQALRHGVLPKTLHVDEPTDQVDWSAGSVELLTEAVDWPERPGRLRRAGVSAFGVGGTNAHVVLEEAPAVEESPAVEPPAGGGVVPWPVSAKTSAALDAQIGQLAAYAEDRTDVDPAVAARALVDSRTAMEHRAVAVGDSREALRDALRMPEGLVRGTVTDPGRVAFVFPGQGTQWAGMGAELLDSSPEFAAAMAECETALSPYVDWSLEAVVRQAPSAPTLDRVDVVQPVTFAVMVSLAKVWQHHGITPEAVIGHSQGEIAAAYVAGALTLDDAARVVTLRSKSIAAHLAGKGGMISLALSEEATRQRIENLHGLSIAAVNGPTATVVSGDPTQIQELAQACEADGIRARIIPVDYASHSAHVETIENELADVLAGLSPQTPQVPFFSTLEGTWITEPALDGGYWYRNLRHRVGFAPAVETLATDEGFTHFIEVSAHPVLTMTLPDKVTGLATLRREDGGQHRLTTSLAEAWANGLALDWASLLPATGALSPAVPDLPTYAFQHRSYWISPAGPGEAPAHTASGREAVAETGLAWGPGAEDLDEEGRRSAVLAMVMRQAASVLRCDSPEEVPVDRPLREIGFDSLTAVDFRNRVNRLTGLQLPPTVVFQHPTPVALAERISDELAERNWAVAEPSDHEQAEEEKAAAPAGARSGADTGAGAGMFRALFRQAVEDDRYGEFLDVLAEASAFRPQFASPEACSERLDPVLLAGGPTDRAEGRAVLVGCTGTAANGGPHEFLRLSTSFQEERDFLAVPLPGYGTGTGTGTALLPADLDTALDAQARAILRAAGDAPVVLLGHSGGALLAHELAFRLERAHGAPPAGIVLVDPYPPGHQEPIEVWSRQLGEGLFAGELEPMSDARLLAMGRYARFLAGPRPGRSSAPVLLVRASEPLGDWQEERGDWRAHWDLPHTVADVPGDHFTMMRDHAPAVAEAVLSWLDAIEGIEGAGK | |
| Protein Class | HYDROLASE | |
| Function | Involved in the biosynthesis of 12- and 14-membered ring macrolactone antibiotics such as methymycin and neomethymycin, and pikromycin and narbomycin, respectively. Component of the pikromycin PKS which catalyzes the biosynthesis of both precursors 10-deoxymethynolide (12-membered ring macrolactone) and narbonolide (14-membered ring macrolactone). Chain elongation through PikAI, PikAII and PikAIII followed by thioesterase catalyzed termination results in the production of 10-deoxymethynolide, while continued elongation through PikAIV, followed by thioesterase (TE) catalyzed cyclization results in the biosynthesis of the narbonolide. The thioesterase can use a series of diketide-N-acetylcysteamine (SNAC) thioesters, but has a strong preference for the 2-methyl-3-ketopentanoyl-SNAC over the stereoisomers of 2-methyl-3-hydroxyacyl-SNAC (PubMed:12379101, PubMed:12733905). | |
Bound Ligands |
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| Ligand ID | HET Code | PDB ID | Binding Affinity | Binding Database | Structure | Complex Card | |
| COVPDB1239 | PSX | 2H7X |
- |
- |
 |
SHOW | |
| COVPDB1490 | YML | 2HFJ |
- |
- |
 |
SHOW | |
| COVPDB1237 | PSK | 2H7Y |
- |
- |
 |
SHOW | |