ID   SAT3_STACB              Reviewed;         271 AA.
AC   A0A084B9Z1;
DT   22-NOV-2017, integrated into UniProtKB/Swiss-Prot.
DT   29-OCT-2014, sequence version 1.
DT   03-AUG-2022, entry version 22.
DE   RecName: Full=Short-chain dehydrogenase/reductase SAT3 {ECO:0000303|PubMed:25015739};
DE            EC=1.-.-.- {ECO:0000305|PubMed:25015739};
DE   AltName: Full=Satratoxin biosynthesis SC1 cluster protein 3 {ECO:0000303|PubMed:25015739};
GN   Name=SAT3 {ECO:0000303|PubMed:25015739}; ORFNames=S7711_07277;
OS   Stachybotrys chartarum (strain CBS 109288 / IBT 7711) (Toxic black mold)
OS   (Stilbospora chartarum).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Sordariomycetes;
OC   Hypocreomycetidae; Hypocreales; Stachybotryaceae; Stachybotrys.
OX   NCBI_TaxID=1280523;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA], IDENTIFICATION, AND
RP   FUNCTION.
RC   STRAIN=CBS 109288 / IBT 7711;
RX   PubMed=25015739; DOI=10.1186/1471-2164-15-590;
RA   Semeiks J., Borek D., Otwinowski Z., Grishin N.V.;
RT   "Comparative genome sequencing reveals chemotype-specific gene clusters in
RT   the toxigenic black mold Stachybotrys.";
RL   BMC Genomics 15:590-590(2014).
CC   -!- FUNCTION: Short-chain dehydrogenase/reductase; part of the satratoxin
CC       SC1 cluster involved in the biosynthesis of satratoxins, trichothecene
CC       mycotoxins that are associated with human food poisonings
CC       (PubMed:25015739). Satratoxins are suggested to be made by products of
CC       multiple gene clusters (SC1, SC2 and SC3) that encode 21 proteins in
CC       all, including polyketide synthases, acetyltransferases, and other
CC       enzymes expected to modify the trichothecene skeleton
CC       (PubMed:25015739). SC1 encodes 10 proteins, SAT1 to SAT10
CC       (PubMed:25015739). The largest are SAT8, which encodes a putative
CC       polyketide synthase (PKS) with a conventional non-reducing
CC       architecture, and SAT10, a putative protein containing four ankyrin
CC       repeats and thus may be involved in protein scaffolding
CC       (PubMed:25015739). The putative short-chain reductase SAT3 may assist
CC       the PKS in some capacity (PubMed:25015739). SAT6 contains a secretory
CC       lipase domain and acts probably as a trichothecene esterase
CC       (PubMed:25015739). SAT5 encodes a putative acetyltransferase, and so,
CC       with SAT6, may affect endogenous protection from toxicity
CC       (PubMed:25015739). The probable transcription factor SAT9 may regulate
CC       the expression of the SC1 cluster (PubMed:25015739). SC2 encodes
CC       proteins SAT11 to SAT16, the largest of which encodes the putative
CC       reducing PKS SAT13 (PubMed:25015739). SAT11 is a cytochrome P450
CC       monooxygenase, while SAT14 and SAT16 are probable acetyltransferases
CC       (PubMed:25015739). The SC2 cluster may be regulated by the
CC       transcription factor SAT15 (PubMed:25015739). SC3 is a small cluster
CC       that encodes 5 proteins, SAT17 to SAT21 (PubMed:25015739). SAT21 is a
CC       putative MFS-type transporter which may have a role in exporting
CC       secondary metabolites (PubMed:25015739). The four other proteins
CC       putatively encoded in SC3 include the taurine hydroxylase-like protein
CC       SAT17, the O-methyltransferase SAT18, the acetyltransferase SAT19, and
CC       the Cys6-type zinc finger SAT20, the latter being probably involved in
CC       regulation of SC3 expression (PubMed:25015739).
CC       {ECO:0000305|PubMed:25015739}.
CC   -!- PATHWAY: Mycotoxin biosynthesis. {ECO:0000269|PubMed:25015739}.
CC   -!- MISCELLANEOUS: Trichothecenes are sesquiterpenoid toxins that act by
CC       inhibiting protein biosynthesis. {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the short-chain dehydrogenases/reductases (SDR)
CC       family. {ECO:0000305}.
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DR   EMBL; KL647604; KEY74370.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A084B9Z1; -.
DR   SMR; A0A084B9Z1; -.
DR   EnsemblFungi; KEY74370; KEY74370; S7711_07277.
DR   HOGENOM; CLU_010194_12_1_1; -.
DR   OrthoDB; 906746at2759; -.
DR   Proteomes; UP000028045; Unassembled WGS sequence.
DR   GO; GO:0016491; F:oxidoreductase activity; IEA:UniProtKB-KW.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   InterPro; IPR002347; SDR_fam.
DR   Pfam; PF00106; adh_short; 1.
DR   PRINTS; PR00081; GDHRDH.
DR   SUPFAM; SSF51735; SSF51735; 1.
PE   3: Inferred from homology;
KW   NAD; NADP; Oxidoreductase.
FT   CHAIN           1..271
FT                   /note="Short-chain dehydrogenase/reductase SAT3"
FT                   /id="PRO_0000442411"
FT   ACT_SITE        168
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU10001"
FT   BINDING         25..33
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250|UniProtKB:Q92506"
FT   BINDING         52..55
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250|UniProtKB:Q92506"
FT   BINDING         104..106
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250|UniProtKB:Q92506"
FT   BINDING         233..235
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250|UniProtKB:Q92506"
SQ   SEQUENCE   271 AA;  28739 MW;  FA6CB71325C98C3C CRC64;
     MSEALIGGGA KKVYILSRRR DVLESAAAKH EGILIPIQCD VTSKASLQSA VDIVTKDSGY
     VNLLIANSGT LGPTNRLDHD LSIHELRKNV FDNVSFEDFN NTLSVNTTGA YFTMLAFLEL
     LDAGNKNALK GGFGGPSTEG GAPSIQSQVI FTSSLGAYSR DRLSPPAYSA SKSALSHLAK
     HASTNLAKYG IRVNVLAPGL FPSEIATLMT ANRDPATENL GDRMFIPARK FGGAEEMGGT
     VLYLASRAGS YCNGLILVND GGRLSVMLSE Y