ID   CHS4_IPOBA              Reviewed;         393 AA.
AC   Q9MB39;
DT   08-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2000, sequence version 1.
DT   25-MAY-2022, entry version 78.
DE   RecName: Full=Chalcone synthase LF4;
DE            EC=2.3.1.74;
DE   AltName: Full=Naringenin-chalcone synthase LF4;
GN   Name=CHS-LF4;
OS   Ipomoea batatas (Sweet potato) (Convolvulus batatas).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Solanales; Convolvulaceae; Ipomoeeae; Ipomoea.
OX   NCBI_TaxID=4120;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RA   Hsu T.-J., Morita H., Shiokawa K., Noguchi H.;
RL   Submitted (JAN-2000) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: The primary product of this enzyme is 4,2',4',6'-
CC       tetrahydroxychalcone (also termed naringenin-chalcone or chalcone)
CC       which can under specific conditions spontaneously isomerize into
CC       naringenin.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=4-coumaroyl-CoA + 2 H(+) + 3 malonyl-CoA = 2',4,4',6'-
CC         tetrahydroxychalcone + 3 CO2 + 4 CoA; Xref=Rhea:RHEA:11128,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:16526, ChEBI:CHEBI:57287,
CC         ChEBI:CHEBI:57355, ChEBI:CHEBI:57384, ChEBI:CHEBI:77645; EC=2.3.1.74;
CC         Evidence={ECO:0000255|PROSITE-ProRule:PRU10023};
CC   -!- PATHWAY: Secondary metabolite biosynthesis; flavonoid biosynthesis.
CC   -!- SIMILARITY: Belongs to the thiolase-like superfamily. Chalcone/stilbene
CC       synthases family. {ECO:0000305}.
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DR   EMBL; AB037390; BAA90329.1; -; mRNA.
DR   AlphaFoldDB; Q9MB39; -.
DR   SMR; Q9MB39; -.
DR   UniPathway; UPA00154; -.
DR   GO; GO:0102128; F:chalcone synthase activity; IEA:UniProtKB-EC.
DR   GO; GO:0016210; F:naringenin-chalcone synthase activity; IEA:UniProtKB-EC.
DR   GO; GO:0009813; P:flavonoid biosynthetic process; IEA:UniProtKB-UniPathway.
DR   Gene3D; 3.40.47.10; -; 2.
DR   InterPro; IPR012328; Chalcone/stilbene_synt_C.
DR   InterPro; IPR001099; Chalcone/stilbene_synt_N.
DR   InterPro; IPR018088; Chalcone/stilbene_synthase_AS.
DR   InterPro; IPR011141; Polyketide_synthase_type-III.
DR   InterPro; IPR016039; Thiolase-like.
DR   PANTHER; PTHR11877; PTHR11877; 1.
DR   Pfam; PF02797; Chal_sti_synt_C; 1.
DR   Pfam; PF00195; Chal_sti_synt_N; 1.
DR   PIRSF; PIRSF000451; PKS_III; 1.
DR   SUPFAM; SSF53901; SSF53901; 2.
DR   PROSITE; PS00441; CHALCONE_SYNTH; 1.
PE   2: Evidence at transcript level;
KW   Acyltransferase; Flavonoid biosynthesis; Transferase.
FT   CHAIN           1..393
FT                   /note="Chalcone synthase LF4"
FT                   /id="PRO_0000215986"
FT   ACT_SITE        164
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU10023"
SQ   SEQUENCE   393 AA;  42739 MW;  DD98C3CA2D1141F9 CRC64;
     MVTVEEVRKA QRAEGPATIL AIGTVTPANC VNQSTYPDYY FRITNSEHKT ELKERFQRMC
     DKSMITKRYM HLTEEILKEN PSFCEYMAPS LDARQDIAVV EVPKLGKEAA QSAIKEWGQP
     KSKITHVVFC TTSGVDMPGA DYQLTKLLGL RPSVKRLMMY QQGCFAGGTV LRLAKDLAEN
     NKGARVLIVC SEITVVTFRG PSETHLDSLV GQALFGDGAA AVIVGADPTP AEKPLFQLVS
     AAQNLAPDSC GAIDGHLREV GLTFHLLKDV PSVVSNNIEK CLFEAFNPLG ISDWNSVFWI
     AHPGGPAILD QVEDKLGLKP EKLRATRHVL SEYGNMSSAC VLFILDEMRK ASSNAGLGTT
     GEGLEWGVLF GFGPGLTIET VVLHSVPIKP GPH