Protein
Protein Name Narbonolide/10-deoxymethynolide synthase PikA4, module 6
#PDB ID 3
Organism Streptomyces venezuelae
Uniprot ID/ACC Q9ZGI2 (PIKA4_STRVZ)
Synonym(s)
  •   module 6
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
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