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CFI2A_SOYBN
ID   CFI2A_SOYBN             Reviewed;         226 AA.
AC   Q53B74;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   24-MAY-2005, sequence version 1.
DT   03-AUG-2022, entry version 75.
DE   RecName: Full=Chalcone--flavanone isomerase 2-A;
DE            Short=Chalcone isomerase 2-A;
DE            EC=5.5.1.6;
GN   Name=CHI2-A; Synonyms=CHI2;
OS   Glycine max (Soybean) (Glycine hispida).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; fabids; Fabales; Fabaceae; Papilionoideae; 50 kb inversion clade;
OC   NPAAA clade; indigoferoid/millettioid clade; Phaseoleae; Glycine;
OC   Glycine subgen. Soja.
OX   NCBI_TaxID=3847;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA], FUNCTION, AND TISSUE SPECIFICITY.
RX   PubMed=15778463; DOI=10.1104/pp.104.054502;
RA   Ralston L., Subramanian S., Matsuno M., Yu O.;
RT   "Partial reconstruction of flavonoid and isoflavonoid biosynthesis in yeast
RT   using soybean type I and type II chalcone isomerases.";
RL   Plant Physiol. 137:1375-1388(2005).
CC   -!- FUNCTION: Catalyzes the intramolecular cyclization of bicyclic
CC       chalcones into tricyclic (S)-flavanones. Responsible for the
CC       isomerization of 4,2',4',6'-tetrahydroxychalcone (also termed chalcone)
CC       into naringenin. {ECO:0000269|PubMed:15778463}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a chalcone = a flavanone.; EC=5.5.1.6;
CC   -!- PATHWAY: Secondary metabolite biosynthesis; flavonoid biosynthesis.
CC   -!- TISSUE SPECIFICITY: Mostly expressed in flowers, and, to a lower
CC       extent, in roots, shoots, and seeds. {ECO:0000269|PubMed:15778463}.
CC   -!- MISCELLANEOUS: Part of the biosynthetic pathway for all classes of
CC       flavonoids, a large class of secondary plant metabolites, many of which
CC       are brightly colored.
CC   -!- SIMILARITY: Belongs to the chalcone isomerase family. {ECO:0000305}.
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DR   EMBL; AY595415; AAT94360.1; -; mRNA.
DR   RefSeq; NP_001236768.1; NM_001249839.1.
DR   AlphaFoldDB; Q53B74; -.
DR   SMR; Q53B74; -.
DR   STRING; 3847.GLYMA20G38580.1; -.
DR   GeneID; 732546; -.
DR   KEGG; gmx:732546; -.
DR   eggNOG; ENOG502QR5P; Eukaryota.
DR   InParanoid; Q53B74; -.
DR   OrthoDB; 1158490at2759; -.
DR   BRENDA; 5.5.1.6; 2483.
DR   UniPathway; UPA00154; -.
DR   Proteomes; UP000008827; Unplaced.
DR   GO; GO:0045430; F:chalcone isomerase activity; IEA:UniProtKB-EC.
DR   GO; GO:0009813; P:flavonoid biosynthetic process; IEA:UniProtKB-UniPathway.
DR   Gene3D; 1.10.890.20; -; 1.
DR   Gene3D; 3.50.70.10; -; 1.
DR   InterPro; IPR044164; CFI.
DR   InterPro; IPR016087; Chalcone_isomerase.
DR   InterPro; IPR016088; Chalcone_isomerase_3-sand.
DR   InterPro; IPR016089; Chalcone_isomerase_bundle_sf.
DR   InterPro; IPR036298; Chalcone_isomerase_sf.
DR   PANTHER; PTHR28039; PTHR28039; 1.
DR   Pfam; PF02431; Chalcone; 1.
DR   SUPFAM; SSF54626; SSF54626; 1.
PE   2: Evidence at transcript level;
KW   Flavonoid biosynthesis; Isomerase; Reference proteome.
FT   CHAIN           1..226
FT                   /note="Chalcone--flavanone isomerase 2-A"
FT                   /id="PRO_0000300853"
FT   BINDING         49
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         114
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         191
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   SITE            107
FT                   /note="Important for catalytic activity"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   226 AA;  24679 MW;  BCD1D29002B584D1 CRC64;
     MAFPSVTSVT VENVTFPPTV KPPCSPNTFF LAGAGVRGLQ IHHAFVKFTA ICIYLQYDAL
     SFLSVKWKTK STHQLTESDQ FFSDIVTGPF EKFMQVTMIK PLTGQQYSEK VAENCVAIWR
     SLGIYTDSEA EAIDKFLSVF KDLTFPPGSS ILFTVSPNGS LTISFSGDET IPEVTSAVIE
     NKLLSEAVLE SMIGKNGVSP AAKQSLASRL SHLFKEPGVC DPQSHK
 
 
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