ID   VRTF_PENAE              Reviewed;         238 AA.
AC   D7PHZ7;
DT   06-JUL-2016, integrated into UniProtKB/Swiss-Prot.
DT   10-AUG-2010, sequence version 1.
DT   03-AUG-2022, entry version 23.
DE   RecName: Full=N-methyltransferase vrtF {ECO:0000303|PubMed:20534346};
DE            EC=2.1.1.- {ECO:0000305|PubMed:20534346};
DE   AltName: Full=Viridicatumtoxin synthesis protein F {ECO:0000303|PubMed:20534346};
GN   Name=vrtF {ECO:0000303|PubMed:20534346};
OS   Penicillium aethiopicum.
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC   Eurotiomycetidae; Eurotiales; Aspergillaceae; Penicillium.
OX   NCBI_TaxID=36650;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND FUNCTION.
RC   STRAIN=IBT 5753;
RX   PubMed=20534346; DOI=10.1016/j.chembiol.2010.03.015;
RA   Chooi Y.H., Cacho R., Tang Y.;
RT   "Identification of the viridicatumtoxin and griseofulvin gene clusters from
RT   Penicillium aethiopicum.";
RL   Chem. Biol. 17:483-494(2010).
RN   [2]
RP   BIOTECHNOLOGY.
RX   PubMed=19168978; DOI=10.1038/ja.2008.84;
RA   Zheng C.J., Yu H.E., Kim E.H., Kim W.G.;
RT   "Viridicatumtoxin B, a new anti-MRSA agent from Penicillium sp. FR11.";
RL   J. Antibiot. 61:633-637(2008).
RN   [3]
RP   FUNCTION.
RX   PubMed=24161266; DOI=10.1021/ja408966t;
RA   Chooi Y.H., Hong Y.J., Cacho R.A., Tantillo D.J., Tang Y.;
RT   "A cytochrome P450 serves as an unexpected terpene cyclase during fungal
RT   meroterpenoid biosynthesis.";
RL   J. Am. Chem. Soc. 135:16805-16808(2013).
RN   [4]
RP   BIOTECHNOLOGY.
RX   PubMed=27049441; DOI=10.1038/ja.2016.35;
RA   Inokoshi J., Nakamura Y., Komada S., Komatsu K., Umeyama H., Tomoda H.;
RT   "Inhibition of bacterial undecaprenyl pyrophosphate synthase by small
RT   fungal molecules.";
RL   J. Antibiot. 69:798-805(2016).
CC   -!- FUNCTION: N-methyltransferase; part of the gene cluster that mediates
CC       the biosynthesis of viridicatumtoxin, a tetracycline-like fungal
CC       meroterpenoid with a unique, fused spirobicyclic ring system
CC       (PubMed:20534346). The first step of the pathway is the production of
CC       the malonamoyl-CoA starter unit for the polyketide synthase vrtA
CC       (PubMed:20534346). The aldolase vrtJ may be involved in the synthesis
CC       of the malonamate substrate for malonamoyl-CoA synthetase vrtB
CC       (PubMed:20534346). The polyketide synthase vrtA then may utilize the
CC       malonamoyl-CoA starter unit, followed by sequential condensation of
CC       eight malonyl-CoA units to form the polyketide backbone
CC       (PubMed:20534346). The cyclization of the last ring could be mediated
CC       by the lactamase-like protein vrtG (PubMed:20534346). The proposed
CC       post-PKS tailoring steps are an hydroxylation at C5 catalyzed the
CC       cytochrome P450 monooxygenase vrtE, a hydroxylation at C12a catalyzed
CC       by VrtH and/or VrtI, and an O-methylation by the O-methyltransferase
CC       vrtF (PubMed:20534346, PubMed:24161266). VrtC is then proposed to
CC       catalyze the transfer of a geranyl group synthesized by vrtD to the
CC       aromatic C ring of the tetracyclic polyketide intermediate of
CC       viridicatumtoxin to yield previridicatumtoxin (PubMed:20534346).
CC       Finally, the cytochrome P450 monooxygenase vrtK catalyzes the
CC       spirocyclization of the geranyl moiety of previridicatumtoxin to afford
CC       viridicatumtoxin (PubMed:24161266). {ECO:0000269|PubMed:20534346,
CC       ECO:0000269|PubMed:24161266}.
CC   -!- PATHWAY: Secondary metabolite biosynthesis; terpenoid biosynthesis.
CC       {ECO:0000269|PubMed:20534346}.
CC   -!- BIOTECHNOLOGY: Viridicatumtoxin and its derivative, viridicatumtoxin B,
CC       exhibit anti-methicillin-resistant Staphylococcus aureus (anti-MRSA)
CC       activity (PubMed:19168978). Moreover, viridicatumtoxin and a C2 acetyl
CC       analog, spirohexaline, have been demonstrated to inhibit bacterial
CC       undecaprenyl diphosphate synthase, a potential new target for
CC       antibiotic development (PubMed:27049441). {ECO:0000269|PubMed:19168978,
CC       ECO:0000269|PubMed:27049441}.
CC   -!- SIMILARITY: Belongs to the methyltransferase superfamily.
CC       {ECO:0000255}.
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DR   EMBL; GU574477; ADI24931.1; -; Genomic_DNA.
DR   AlphaFoldDB; D7PHZ7; -.
DR   SMR; D7PHZ7; -.
DR   BioCyc; MetaCyc:MON-19277; -.
DR   UniPathway; UPA00213; -.
DR   GO; GO:0008168; F:methyltransferase activity; IEA:UniProtKB-KW.
DR   GO; GO:0032259; P:methylation; IEA:UniProtKB-KW.
DR   GO; GO:0016114; P:terpenoid biosynthetic process; IEA:UniProtKB-UniPathway.
DR   Gene3D; 3.40.50.150; -; 1.
DR   InterPro; IPR013216; Methyltransf_11.
DR   InterPro; IPR016584; MeTrfase_VrtF.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   Pfam; PF08241; Methyltransf_11; 1.
DR   PIRSF; PIRSF011491; Mtase_YbcY_prd; 1.
DR   SUPFAM; SSF53335; SSF53335; 1.
PE   1: Evidence at protein level;
KW   Methyltransferase; Transferase.
FT   CHAIN           1..238
FT                   /note="N-methyltransferase vrtF"
FT                   /id="PRO_0000436824"
SQ   SEQUENCE   238 AA;  26549 MW;  A7CD89102B367D97 CRC64;
     MTTTTTTDDT QKLDPSASDE VIYKSWDLLI YEIWVLGIVS TWAWGCSTTE YLLPQFRANV
     GTNHLDVGSG TGYYLRKGGI PASTRLTLLD LERPALDLGL QRCGRSDARG LQADILQPLP
     VIDKFDSVSM YYLLHCIPAS VEDKCAIFKH IKHNMTPDGV IHGANVLGKG VRNDGHFAAY
     VRRGVLKAGI FHNLDDNAYD FEHALRMNFE EVETRVVGSV FIFRASRPKL DEGDLLET