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PYNE_ASPNC
ID   PYNE_ASPNC              Reviewed;         281 AA.
AC   A5ABG8;
DT   17-JUN-2020, integrated into UniProtKB/Swiss-Prot.
DT   12-JUN-2007, sequence version 1.
DT   25-MAY-2022, entry version 60.
DE   RecName: Full=Oxidase pynE {ECO:0000303|PubMed:24106156};
DE            EC=1.-.-.- {ECO:0000269|PubMed:26414728};
DE   AltName: Full=Pyranonigrin biosynthesis cluster protein E {ECO:0000303|PubMed:24106156};
GN   Name=pynE {ECO:0000303|PubMed:24106156}; ORFNames=An11g00330;
OS   Aspergillus niger (strain CBS 513.88 / FGSC A1513).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC   Eurotiomycetidae; Eurotiales; Aspergillaceae; Aspergillus;
OC   Aspergillus subgen. Circumdati.
OX   NCBI_TaxID=425011;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CBS 513.88 / FGSC A1513 / ATCC MYA-4892;
RX   PubMed=17259976; DOI=10.1038/nbt1282;
RA   Pel H.J., de Winde J.H., Archer D.B., Dyer P.S., Hofmann G., Schaap P.J.,
RA   Turner G., de Vries R.P., Albang R., Albermann K., Andersen M.R.,
RA   Bendtsen J.D., Benen J.A.E., van den Berg M., Breestraat S., Caddick M.X.,
RA   Contreras R., Cornell M., Coutinho P.M., Danchin E.G.J., Debets A.J.M.,
RA   Dekker P., van Dijck P.W.M., van Dijk A., Dijkhuizen L., Driessen A.J.M.,
RA   d'Enfert C., Geysens S., Goosen C., Groot G.S.P., de Groot P.W.J.,
RA   Guillemette T., Henrissat B., Herweijer M., van den Hombergh J.P.T.W.,
RA   van den Hondel C.A.M.J.J., van der Heijden R.T.J.M., van der Kaaij R.M.,
RA   Klis F.M., Kools H.J., Kubicek C.P., van Kuyk P.A., Lauber J., Lu X.,
RA   van der Maarel M.J.E.C., Meulenberg R., Menke H., Mortimer M.A.,
RA   Nielsen J., Oliver S.G., Olsthoorn M., Pal K., van Peij N.N.M.E.,
RA   Ram A.F.J., Rinas U., Roubos J.A., Sagt C.M.J., Schmoll M., Sun J.,
RA   Ussery D., Varga J., Vervecken W., van de Vondervoort P.J.J., Wedler H.,
RA   Woesten H.A.B., Zeng A.-P., van Ooyen A.J.J., Visser J., Stam H.;
RT   "Genome sequencing and analysis of the versatile cell factory Aspergillus
RT   niger CBS 513.88.";
RL   Nat. Biotechnol. 25:221-231(2007).
RN   [2]
RP   FUNCTION, AND INDUCTION.
RX   PubMed=24106156; DOI=10.1002/cbic.201300430;
RA   Awakawa T., Yang X.L., Wakimoto T., Abe I.;
RT   "Pyranonigrin E: a PKS-NRPS hybrid metabolite from Aspergillus niger
RT   identified by genome mining.";
RL   ChemBioChem 14:2095-2099(2013).
RN   [3]
RP   FUNCTION, DISRUPTION PHENOTYPE, CATALYTIC ACTIVITY, AND PATHWAY.
RX   PubMed=26414728; DOI=10.1021/acs.orglett.5b02435;
RA   Yamamoto T., Tsunematsu Y., Noguchi H., Hotta K., Watanabe K.;
RT   "Elucidation of pyranonigrin biosynthetic pathway reveals a mode of
RT   tetramic acid, fused gamma-pyrone, and exo-methylene formation.";
RL   Org. Lett. 17:4992-4995(2015).
CC   -!- FUNCTION: Oxidase; part of the gene cluster that mediates the
CC       biosynthesis of pyranonigrins, a family of antioxidative compounds
CC       (PubMed:24106156, PubMed:26414728). The first step of pyranonigrins
CC       biosynthesis is performed by the hybrid PKS-NRPS synthetase that
CC       condenses 6 malonyl-CoA units to an acetyl starter unit, to form a
CC       1,3,5-trioxotetradecane-6,8-dienyl-ACP (PubMed:24106156). The enoyl
CC       reducrase (ER) domain of pynA is likely to be functional during the
CC       first two rounds of polyketide chain extension, to generate the
CC       saturated C-C bonds of the alkyl side chain (Probable). PynA
CC       subsequently forms the amide bond between the acyl chain and L-serine
CC       (PubMed:24106156, PubMed:26414728). Although pynA has a terminal
CC       reductase domain, it appears to require the thioesterase pynI for the
CC       release of the straight-chain intermediate from pynA via the formation
CC       of a tetramic acid pyranonigrin J (PubMed:26414728). The
CC       methyltransferase pynC then coverts pyranonigrin J to pyranonigrin I
CC       via N-methylation (PubMed:26414728). The FAD-dependent monooxygenase
CC       pynG catalyzes an epoxidation-mediated cyclization to form the dihydro-
CC       gamma-pyrone moiety, followed by pynD-catalyzed oxidation of the
CC       alcohol to the ketone and enolization to yield the characteristic
CC       tetramic acid-fused gamma-pyrone core of pyranonigrin H
CC       (PubMed:26414728). Pyranonigrin H is substrate of pynH for dehydration-
CC       mediated exo-methylene formation from the serine side chain to produce
CC       pyranonigrin E, before the oxidase pynE reduces the exo-methylene of
CC       pyranonigrin E into a pendant methyl to form pyranonigrin G
CC       (PubMed:26414728). The FAD-linked oxidoreductase pynB performs the
CC       reverse reaction and converts pyranonigrin G back to pyranonigrin E
CC       (PubMed:26414728). {ECO:0000269|PubMed:24106156,
CC       ECO:0000269|PubMed:26414728, ECO:0000305|PubMed:24106156}.
CC   -!- PATHWAY: Secondary metabolite biosynthesis.
CC       {ECO:0000269|PubMed:26414728}.
CC   -!- INDUCTION: Expression is positively regulated by the cluster-specific
CC       transcription factor pynR. {ECO:0000269|PubMed:24106156}.
CC   -!- DISRUPTION PHENOTYPE: Leads to a reduced accumulation of pyranonigrin
CC       E. {ECO:0000269|PubMed:26414728}.
CC   -!- SIMILARITY: Belongs to the avfA family. {ECO:0000305}.
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DR   EMBL; AM270218; CAK48266.1; -; Genomic_DNA.
DR   RefSeq; XP_001394037.1; XM_001394000.1.
DR   AlphaFoldDB; A5ABG8; -.
DR   PaxDb; A5ABG8; -.
DR   EnsemblFungi; CAK48266; CAK48266; An11g00330.
DR   GeneID; 4984239; -.
DR   KEGG; ang:ANI_1_1544094; -.
DR   VEuPathDB; FungiDB:An11g00330; -.
DR   HOGENOM; CLU_066707_0_0_1; -.
DR   Proteomes; UP000006706; Chromosome 7R.
DR   GO; GO:0016491; F:oxidoreductase activity; IEA:UniProtKB-KW.
DR   GO; GO:0019748; P:secondary metabolic process; IGC:AspGD.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   SUPFAM; SSF51735; SSF51735; 1.
PE   1: Evidence at protein level;
KW   Oxidoreductase; Reference proteome.
FT   CHAIN           1..281
FT                   /note="Oxidase pynE"
FT                   /id="PRO_0000450058"
SQ   SEQUENCE   281 AA;  30923 MW;  7A6A3690F97C460F CRC64;
     MSKPTIAFLG ATGGCINACL AHTLQTGYHA VALARTPSKL TALLRTQNID QETLDSRLRI
     VTGDATDPEA VKSTLLLQPG FPTDPTTSAS SPTPTLVSHI ISGIGATGNF RGWCFEFDQP
     HICEEATRAL LTALRNIYAT YPEFMLPANV KSRPLLTVLS GMGVDPSQKQ MDVPFLLRRV
     YHGLLHVPHA DKWVMEEMLA KREAREFFRG VITVRPGSLL TGDHMLGSGY GYEKVRVGTE
     REEPSVGWTI PRADVGEWVF REVVVMGGGR WVDEKVTLTC W
 
 
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