NOTI_ASPSM
ID NOTI_ASPSM Reviewed; 433 AA.
AC E1ACQ4;
DT 11-DEC-2019, integrated into UniProtKB/Swiss-Prot.
DT 02-NOV-2010, sequence version 1.
DT 03-AUG-2022, entry version 26.
DE RecName: Full=FAD-dependent monooxygenase notI {ECO:0000303|PubMed:20722388};
DE EC=1.-.-.- {ECO:0000305|PubMed:23213353};
DE AltName: Full=Notoamide biosynthesis cluster protein I {ECO:0000303|PubMed:20722388};
GN Name=notI {ECO:0000303|PubMed:20722388};
OS Aspergillus sp. (strain MF297-2).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC Eurotiomycetidae; Eurotiales; Aspergillaceae; Aspergillus.
OX NCBI_TaxID=877550;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND FUNCTION.
RC STRAIN=MF297-2;
RX PubMed=20722388; DOI=10.1021/ja1049302;
RA Ding Y., de Wet J.R., Cavalcoli J., Li S., Greshock T.J., Miller K.A.,
RA Finefield J.M., Sunderhaus J.D., McAfoos T.J., Tsukamoto S., Williams R.M.,
RA Sherman D.H.;
RT "Genome-based characterization of two prenylation steps in the assembly of
RT the stephacidin and notoamide anticancer agents in a marine-derived
RT Aspergillus sp.";
RL J. Am. Chem. Soc. 132:12733-12740(2010).
RN [2]
RP BIOTECHNOLOGY.
RX PubMed=17304611; DOI=10.1002/anie.200604381;
RA Kato H., Yoshida T., Tokue T., Nojiri Y., Hirota H., Ohta T.,
RA Williams R.M., Tsukamoto S.;
RT "Notoamides A-D: prenylated indole alkaloids isolated from a marine-derived
RT fungus, Aspergillus sp.";
RL Angew. Chem. Int. Ed. 46:2254-2256(2007).
RN [3]
RP FUNCTION.
RX PubMed=22188465; DOI=10.1021/ja2093212;
RA Li S., Finefield J.M., Sunderhaus J.D., McAfoos T.J., Williams R.M.,
RA Sherman D.H.;
RT "Biochemical characterization of NotB as an FAD-dependent oxidase in the
RT biosynthesis of notoamide indole alkaloids.";
RL J. Am. Chem. Soc. 134:788-791(2012).
RN [4]
RP FUNCTION, AND PATHWAY.
RX PubMed=23213353; DOI=10.1039/c2md20029e;
RA Li S., Anand K., Tran H., Yu F., Finefield J.M., Sunderhaus J.D.,
RA McAfoos T.J., Tsukamoto S., Williams R.M., Sherman D.H.;
RT "Comparative analysis of the biosynthetic systems for fungal
RT bicyclo[2.2.2]diazaoctane indole alkaloids: the (+)/(-)-notoamide,
RT paraherquamide and malbrancheamide pathways.";
RL Med. Chem. Commun. 3:987-996(2012).
CC -!- FUNCTION: FAD-dependent monooxygenase; part of the gene cluster that
CC mediates the biosynthesis of notoamide, a fungal indole alkaloid that
CC belongs to a family of natural products containing a characteristic
CC bicyclo[2.2.2]diazaoctane core (PubMed:20722388). The first step of
CC notoamide biosynthesis involves coupling of L-proline and L-tryptophan
CC by the bimodular NRPS notE, to produce cyclo-L-tryptophan-L-proline
CC called brevianamide F (PubMed:20722388). The reverse prenyltransferase
CC notF then acts as a deoxybrevianamide E synthase and converts
CC brevianamide F to deoxybrevianamide E via reverse prenylation at C-2 of
CC the indole ring leading to the bicyclo[2.2.2]diazaoctane core
CC (PubMed:20722388). Deoxybrevianamide E is further hydroxylated at C-6
CC of the indole ring, likely catalyzed by the cytochrome P450
CC monooxygenase notG, to yield 6-hydroxy-deoxybrevianamide E (Probable).
CC 6-hydroxy-deoxybrevianamide E is a specific substrate of the
CC prenyltransferase notC for normal prenylation at C-7 to produce 6-
CC hydroxy-7-prenyl-deoxybrevianamide, also called notoamide S
CC (PubMed:20722388). As the proposed pivotal branching point in notoamide
CC biosynthesis, notoamide S can be diverted to notoamide E through an
CC oxidative pyran ring closure putatively catalyzed by either notH
CC cytochrome P450 monooxygenase or the notD FAD-linked oxidoreductase
CC (Probable). This step would be followed by an indole 2,3-epoxidation-
CC initiated pinacol-like rearrangement catalyzed by the notB FAD-
CC dependent monooxygenase leading to the formation of notoamide C and
CC notoamide D (PubMed:22188465). On the other hand notoamide S is
CC converted to notoamide T by notH (or notD), a bifunctional oxidase that
CC also functions as the intramolecular Diels-Alderase responsible for
CC generation of (+)-notoamide T (Probable). To generate antipodal (-)-
CC notoaminide T, notH' (or notD') in Aspergillus versicolor is expected
CC to catalyze a Diels-Alder reaction leading to the opposite
CC stereochemistry (Probable). The remaining oxidoreductase notD (or notH)
CC likely catalyzes the oxidative pyran ring formation to yield (+)-
CC stephacidin A (Probable). The FAD-dependent monooxygenase notI is
CC highly similar to notB and is predicted to catalyze a similar
CC conversion from (+)-stephacidin A to (-)-notoamide B via the 2,3-
CC epoxidation of (+)-stephacidin A followed by a pinacol-type
CC rearrangement (Probable). Finally, it remains unclear which enzyme
CC could be responsible for the final hydroxylation steps leading to
CC notoamide A and sclerotiamide (Probable). {ECO:0000269|PubMed:20722388,
CC ECO:0000269|PubMed:22188465, ECO:0000305|PubMed:23213353}.
CC -!- COFACTOR:
CC Name=FAD; Xref=ChEBI:CHEBI:57692;
CC Evidence={ECO:0000250|UniProtKB:A6T923};
CC -!- PATHWAY: Alkaloid biosynthesis. {ECO:0000305|PubMed:23213353}.
CC -!- BIOTECHNOLOGY: Notoamides have been shown to exhibit antitumoral
CC activities (PubMed:17304611). Notoamides A-C show moderate cytotoxicity
CC against HeLa and L1210 cells with IC(50) values in the range of 22-52
CC mg/ml, but the IC(50) value of notoamide D is greater than 100 mg/ml
CC (PubMed:17304611). Moreover, notoamide C induces G2/M-cell cycle arrest
CC at a concentration of 6.3 mg/ml (PubMed:17304611).
CC {ECO:0000269|PubMed:17304611}.
CC -!- SIMILARITY: Belongs to the paxM FAD-dependent monooxygenase family.
CC {ECO:0000305}.
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DR EMBL; HM622670; ADM34142.1; -; Genomic_DNA.
DR AlphaFoldDB; E1ACQ4; -.
DR SMR; E1ACQ4; -.
DR GO; GO:0071949; F:FAD binding; IEA:InterPro.
DR GO; GO:0004497; F:monooxygenase activity; IEA:UniProtKB-KW.
DR GO; GO:0009820; P:alkaloid metabolic process; IEA:UniProtKB-KW.
DR GO; GO:0044550; P:secondary metabolite biosynthetic process; IEA:UniProt.
DR Gene3D; 3.50.50.60; -; 1.
DR InterPro; IPR002938; FAD-bd.
DR InterPro; IPR036188; FAD/NAD-bd_sf.
DR Pfam; PF01494; FAD_binding_3; 1.
DR SUPFAM; SSF51905; SSF51905; 1.
PE 1: Evidence at protein level;
KW Alkaloid metabolism; FAD; Flavoprotein; Monooxygenase; Oxidoreductase.
FT CHAIN 1..433
FT /note="FAD-dependent monooxygenase notI"
FT /id="PRO_0000448804"
FT BINDING 45..46
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000250|UniProtKB:A6T923"
FT BINDING 58
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000250|UniProtKB:A6T923"
FT BINDING 141
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000250|UniProtKB:A6T923"
FT BINDING 243..245
FT /ligand="substrate"
FT /evidence="ECO:0000250|UniProtKB:A6T923"
FT BINDING 314
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000250|UniProtKB:A6T923"
FT BINDING 324..328
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000250|UniProtKB:A6T923"
SQ SEQUENCE 433 AA; 47111 MW; 643709B4DFB79E20 CRC64;
MAIDGSGVAT PAPSGITVII VGLGPTGLAA AIECHRRGHK VICFEKNPKS YRLGDLISVT
GNAVRVLQEW GNGSVIKELQ AFQCNLDTLE VYNETGDLKL SAPYNATQAK DEYMLRRSRL
LDIFLQHLKS LGVEIHLGIQ VADYWETESS AGVTVGGEKI VGDCVVVADG VHSKGRPQVS
GEPFALEATD GIAFRAFFNA SEISQDPEAS WILRDAGEKD CFKTFYGKGL VMMVGTAENH
EYVFWSCGHK ENVMAHPSSV ATVLDLIRDW PVSTRLAPLI SKTPGDNCLN QTLYTRPPLK
KWVSSNGRMI VLGDAAHPFL PHAGQGANQG IEDGAVLALC LEITSKKDVP LALRVTEKLR
YQRVAAIQQR GVEARDQSLN VDWGNGGFSK KLTLHPAWLH DHDCIKQVYE EFDKAADAVT
KGHEHTFGGI PVG