USTF2_ASPFN
ID USTF2_ASPFN Reviewed; 494 AA.
AC B8NM73;
DT 05-OCT-2016, integrated into UniProtKB/Swiss-Prot.
DT 03-MAR-2009, sequence version 1.
DT 03-AUG-2022, entry version 60.
DE RecName: Full=Flavin-containing monooxygenase ustF2 {ECO:0000303|PubMed:24841822};
DE EC=1.8.-.- {ECO:0000305|PubMed:27166860};
DE AltName: Full=Ustiloxin B biosynthesis protein F2 {ECO:0000303|PubMed:24841822};
DE Flags: Precursor;
GN Name=ustF2 {ECO:0000303|PubMed:24841822}; ORFNames=AFLA_095050;
OS Aspergillus flavus (strain ATCC 200026 / FGSC A1120 / IAM 13836 / NRRL 3357
OS / JCM 12722 / SRRC 167).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC Eurotiomycetidae; Eurotiales; Aspergillaceae; Aspergillus;
OC Aspergillus subgen. Circumdati.
OX NCBI_TaxID=332952;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 200026 / FGSC A1120 / IAM 13836 / NRRL 3357 / JCM 12722 / SRRC
RC 167;
RX PubMed=25883274; DOI=10.1128/genomea.00168-15;
RA Nierman W.C., Yu J., Fedorova-Abrams N.D., Losada L., Cleveland T.E.,
RA Bhatnagar D., Bennett J.W., Dean R., Payne G.A.;
RT "Genome sequence of Aspergillus flavus NRRL 3357, a strain that causes
RT aflatoxin contamination of food and feed.";
RL Genome Announc. 3:E0016815-E0016815(2015).
RN [2]
RP FUNCTION, AND DISRUPTION PHENOTYPE.
RX PubMed=24841822; DOI=10.1016/j.fgb.2014.04.011;
RA Umemura M., Nagano N., Koike H., Kawano J., Ishii T., Miyamura Y.,
RA Kikuchi M., Tamano K., Yu J., Shin-ya K., Machida M.;
RT "Characterization of the biosynthetic gene cluster for the ribosomally
RT synthesized cyclic peptide ustiloxin B in Aspergillus flavus.";
RL Fungal Genet. Biol. 68:23-30(2014).
RN [3]
RP FUNCTION, DISRUPTION PHENOTYPE, AND CATALYTIC ACTIVITY.
RX PubMed=27166860; DOI=10.1002/anie.201602611;
RA Ye Y., Minami A., Igarashi Y., Izumikawa M., Umemura M., Nagano N.,
RA Machida M., Kawahara T., Shin-Ya K., Gomi K., Oikawa H.;
RT "Unveiling the biosynthetic pathway of the ribosomally synthesized and
RT post-translationally modified peptide ustiloxin B in filamentous fungi.";
RL Angew. Chem. Int. Ed. 55:8072-8075(2016).
RN [4]
RP FUNCTION, AND DISRUPTION PHENOTYPE.
RX PubMed=26703898; DOI=10.1016/j.fgb.2015.12.010;
RA Nagano N., Umemura M., Izumikawa M., Kawano J., Ishii T., Kikuchi M.,
RA Tomii K., Kumagai T., Yoshimi A., Machida M., Abe K., Shin-ya K., Asai K.;
RT "Class of cyclic ribosomal peptide synthetic genes in filamentous fungi.";
RL Fungal Genet. Biol. 86:58-70(2016).
CC -!- FUNCTION: Flavin-containing monooxygenase; part of the gene cluster
CC that mediates the biosynthesis of the secondary metabolite ustiloxin B,
CC an antimitotic tetrapeptide (PubMed:24841822, PubMed:27166860,
CC PubMed:26703898). First, ustA is processed by the subtilisin-like
CC endoprotease Kex2 that is outside the ustiloxin B gene cluster, at the
CC C-terminal side of Arg-Lys, after transfer to Golgi apparatus through
CC the endoplasmic reticulum (ER) (PubMed:24841822). Cleavage by KEX2
CC generates 16 peptides YAIG-I to YAIG-XVI (PubMed:24841822). To process
CC the precursor peptide further, at least two peptidases are necessary to
CC cleave the N-terminal and C-terminal sides of the Tyr-Ala-Ile-Gly core
CC peptide which serves as backbone for the synthesis of ustiloxin B,
CC through cyclization and modification of the tyrosine with a non-protein
CC coding amino acid, norvaline (PubMed:24841822). One of the two
CC peptidases must be the serine peptidase ustP; and the other pepdidase
CC is probably ustH (PubMed:24841822). Macrocyclization of the core
CC peptide derived from ustA requires the tyrosinase ustQ, as well as the
CC homologous oxidases ustYa and ustYb, and leads to the production of the
CC first cyclization product N-desmethylustiloxin F (PubMed:27166860,
CC PubMed:26703898). For the formation of N-desmethylustiloxin F, three
CC oxidation steps are required, hydroxylation at the benzylic position,
CC hydroxylation at either the aromatic ring of Tyr or beta-position of
CC Ile, and oxidative cyclization (PubMed:27166860). UstQ may catalyze the
CC oxidation of a phenol moiety, whereas the ustYa and ustYb are most
CC likely responsible for the remaining two-step oxidations
CC (PubMed:27166860). N-desmethylustiloxin F is then methylated by ustM to
CC yield ustiloxin F which in turn substrate of the cytochrome P450
CC monooxygenase ustC which catalyzes the formation of S-deoxyustiloxin H
CC (PubMed:27166860). The flavoprotein monooxygenases ustF1 and ustF2 then
CC participate in the modification of the side chain of S-deoxyustiloxin
CC H, leading to the synthesis of an oxime intermediate, via ustiloxin H
CC (PubMed:27166860). Finally, carboxylative dehydration performed by the
CC cysteine desulfurase-like protein ustD yields ustiloxin B
CC (PubMed:27166860). {ECO:0000269|PubMed:24841822,
CC ECO:0000269|PubMed:26703898, ECO:0000269|PubMed:27166860}.
CC -!- PATHWAY: Mycotoxin biosynthesis. {ECO:0000269|PubMed:27166860}.
CC -!- DISRUPTION PHENOTYPE: Impairs the production of ustiloxin B but
CC accumulates intermediates such as ustiloxin F and C (PubMed:24841822,
CC PubMed:27166860, PubMed:26703898). {ECO:0000269|PubMed:24841822,
CC ECO:0000269|PubMed:26703898, ECO:0000269|PubMed:27166860}.
CC -!- SIMILARITY: Belongs to the FMO family. {ECO:0000305}.
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DR EMBL; EQ963480; EED49424.1; -; Genomic_DNA.
DR RefSeq; XP_002381325.1; XM_002381284.1.
DR AlphaFoldDB; B8NM73; -.
DR SMR; B8NM73; -.
DR EnsemblFungi; EED49424; EED49424; AFLA_095050.
DR VEuPathDB; FungiDB:AFLA_095050; -.
DR eggNOG; KOG1399; Eukaryota.
DR HOGENOM; CLU_006909_5_2_1; -.
DR OMA; FANTIYQ; -.
DR Proteomes; UP000001875; Unassembled WGS sequence.
DR GO; GO:0050660; F:flavin adenine dinucleotide binding; IEA:InterPro.
DR GO; GO:0004499; F:N,N-dimethylaniline monooxygenase activity; IEA:InterPro.
DR GO; GO:0050661; F:NADP binding; IEA:InterPro.
DR Gene3D; 3.50.50.60; -; 2.
DR InterPro; IPR036188; FAD/NAD-bd_sf.
DR InterPro; IPR000960; Flavin_mOase.
DR InterPro; IPR020946; Flavin_mOase-like.
DR Pfam; PF00743; FMO-like; 2.
DR PIRSF; PIRSF000332; FMO; 1.
DR SUPFAM; SSF51905; SSF51905; 2.
PE 1: Evidence at protein level;
KW FAD; Flavoprotein; Glycoprotein; Monooxygenase; NADP; Oxidoreductase;
KW Signal.
FT SIGNAL 1..21
FT /evidence="ECO:0000255"
FT CHAIN 22..494
FT /note="Flavin-containing monooxygenase ustF2"
FT /id="PRO_0000437299"
FT REGION 73..93
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 13..18
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000255"
FT BINDING 250..255
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000255"
FT CARBOHYD 459
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00498"
SQ SEQUENCE 494 AA; 55576 MW; D90C769FFAF28BD8 CRC64;
MANPQTTRVA VVGAGISGVL AAGHLLATGL EVTVFERNAA PGGVWYAIPF SGLLATREAD
AWARLYDERT PIEPSYPAMK PSKADPPATN EQETSRFMLQ HAPPGPCYYN LQNNVPTPLL
EVSLKPWPDG TPDTVRHDVI QRFIQDMSIE AKVHDVTRYE ARVKKVVKDG AEWKITWSTP
QVGLQSETSE FEQVSPFDVV IVASGHYHAP RVPDIPGLSD TKRKYGSRIL HSKEYRRPEN
FRNKNILMIG GGVSSIDIAN DISPFANTIY QSTRNSKFDL VESMLPENGV RVHEISHFEI
QSHSDEPLSD DEPLPLTIHF ESGQNLHGIH MIMLCTGYHI TFPYLEEYHS DETTLQDADE
NILITDGTQV HNLYQDIFYI PDPTLVFVGL PYYTFTFSIF DFQAIVVAQV LSGTVQLPTE
TEMRSEYNAK VERVGLGKVF HSILGTEENY VHDLLTWVNT SRAAQELVAI KGFSPRWYEA
KEALRQKYRA QVNK
