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KYNU_MONBE
ID   KYNU_MONBE              Reviewed;         460 AA.
AC   A9V3C0;
DT   20-JAN-2009, integrated into UniProtKB/Swiss-Prot.
DT   05-FEB-2008, sequence version 1.
DT   03-AUG-2022, entry version 74.
DE   RecName: Full=Kynureninase {ECO:0000255|HAMAP-Rule:MF_03017};
DE            EC=3.7.1.3 {ECO:0000255|HAMAP-Rule:MF_03017};
DE   AltName: Full=L-kynurenine hydrolase {ECO:0000255|HAMAP-Rule:MF_03017};
GN   Name=kynu {ECO:0000255|HAMAP-Rule:MF_03017}; ORFNames=26773;
OS   Monosiga brevicollis (Choanoflagellate).
OC   Eukaryota; Choanoflagellata; Craspedida; Salpingoecidae; Monosiga.
OX   NCBI_TaxID=81824;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MX1 / ATCC 50154;
RX   PubMed=18273011; DOI=10.1038/nature06617;
RG   JGI Sequencing;
RA   King N., Westbrook M.J., Young S.L., Kuo A., Abedin M., Chapman J.,
RA   Fairclough S., Hellsten U., Isogai Y., Letunic I., Marr M., Pincus D.,
RA   Putnam N., Rokas A., Wright K.J., Zuzow R., Dirks W., Good M.,
RA   Goodstein D., Lemons D., Li W., Lyons J.B., Morris A., Nichols S.,
RA   Richter D.J., Salamov A., Bork P., Lim W.A., Manning G., Miller W.T.,
RA   McGinnis W., Shapiro H., Tjian R., Grigoriev I.V., Rokhsar D.;
RT   "The genome of the choanoflagellate Monosiga brevicollis and the origin of
RT   metazoans.";
RL   Nature 451:783-788(2008).
CC   -!- FUNCTION: Catalyzes the cleavage of L-kynurenine (L-Kyn) and L-3-
CC       hydroxykynurenine (L-3OHKyn) into anthranilic acid (AA) and 3-
CC       hydroxyanthranilic acid (3-OHAA), respectively. {ECO:0000255|HAMAP-
CC       Rule:MF_03017}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + L-kynurenine = anthranilate + H(+) + L-alanine;
CC         Xref=Rhea:RHEA:16813, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:16567, ChEBI:CHEBI:57959, ChEBI:CHEBI:57972; EC=3.7.1.3;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03017};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + H(+) +
CC         L-alanine; Xref=Rhea:RHEA:25143, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:36559, ChEBI:CHEBI:57972,
CC         ChEBI:CHEBI:58125; EC=3.7.1.3; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_03017};
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03017};
CC   -!- PATHWAY: Amino-acid degradation; L-kynurenine degradation; L-alanine
CC       and anthranilate from L-kynurenine: step 1/1. {ECO:0000255|HAMAP-
CC       Rule:MF_03017}.
CC   -!- PATHWAY: Cofactor biosynthesis; NAD(+) biosynthesis; quinolinate from
CC       L-kynurenine: step 2/3. {ECO:0000255|HAMAP-Rule:MF_03017}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_03017}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_03017}.
CC   -!- SIMILARITY: Belongs to the kynureninase family. {ECO:0000255|HAMAP-
CC       Rule:MF_03017}.
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DR   EMBL; CH991556; EDQ88034.1; -; Genomic_DNA.
DR   RefSeq; XP_001747110.1; XM_001747058.1.
DR   AlphaFoldDB; A9V3C0; -.
DR   SMR; A9V3C0; -.
DR   STRING; 81824.XP_001747110.1; -.
DR   EnsemblProtists; EDQ88034; EDQ88034; MONBRDRAFT_26773.
DR   GeneID; 5892477; -.
DR   KEGG; mbr:MONBRDRAFT_26773; -.
DR   eggNOG; KOG3846; Eukaryota.
DR   InParanoid; A9V3C0; -.
DR   OMA; TFPTDGY; -.
DR   UniPathway; UPA00253; UER00329.
DR   UniPathway; UPA00334; UER00455.
DR   Proteomes; UP000001357; Unassembled WGS sequence.
DR   GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR   GO; GO:0061981; F:3-hydroxykynureninase activity; IEA:RHEA.
DR   GO; GO:0030429; F:kynureninase activity; IBA:GO_Central.
DR   GO; GO:0030170; F:pyridoxal phosphate binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0034354; P:'de novo' NAD biosynthetic process from tryptophan; IEA:UniProtKB-UniRule.
DR   GO; GO:0043420; P:anthranilate metabolic process; IBA:GO_Central.
DR   GO; GO:0097053; P:L-kynurenine catabolic process; IEA:UniProtKB-UniPathway.
DR   GO; GO:0019805; P:quinolinate biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0019441; P:tryptophan catabolic process to kynurenine; IBA:GO_Central.
DR   Gene3D; 3.40.640.10; -; 1.
DR   Gene3D; 3.90.1150.10; -; 1.
DR   HAMAP; MF_01970; Kynureninase; 1.
DR   InterPro; IPR000192; Aminotrans_V_dom.
DR   InterPro; IPR010111; Kynureninase.
DR   InterPro; IPR015424; PyrdxlP-dep_Trfase.
DR   InterPro; IPR015421; PyrdxlP-dep_Trfase_major.
DR   InterPro; IPR015422; PyrdxlP-dep_Trfase_small.
DR   PANTHER; PTHR14084; PTHR14084; 1.
DR   Pfam; PF00266; Aminotran_5; 1.
DR   PIRSF; PIRSF038800; KYNU; 1.
DR   SUPFAM; SSF53383; SSF53383; 1.
DR   TIGRFAMs; TIGR01814; kynureninase; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Hydrolase; Pyridine nucleotide biosynthesis;
KW   Pyridoxal phosphate; Reference proteome.
FT   CHAIN           1..460
FT                   /note="Kynureninase"
FT                   /id="PRO_0000361087"
FT   BINDING         127
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03017"
FT   BINDING         128
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03017"
FT   BINDING         165..168
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03017"
FT   BINDING         249
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03017"
FT   BINDING         252
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03017"
FT   BINDING         274
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03017"
FT   BINDING         304
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03017"
FT   BINDING         332
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03017"
FT   MOD_RES         275
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03017"
SQ   SEQUENCE   460 AA;  51259 MW;  8ED7320A036A9BDE CRC64;
     MHLARELGVN LADQRLAQAL DEADPLAHLR QEFSIPQMKD IKQADLKLVE AESDCIYLCG
     NSLGLMPKRT RTIVNEELDT WATGGVTGHF PDGPGKRPWV SIDETVTDKC ARVVGALPEE
     VAIMNTLTVN LHLLMVSLAH TMARQVPFYR PTSDRFKILV EAKAFPSDHF AVLSQLRMHG
     HDESALIEVK PREGEHNIRE EDLLAILEEQ GDSIATVLVG GVHYYTGQFF DLQRLCAAAH
     NKGCTFGVDL AHAVGNVPLQ LHDWDIDFAC WCTYKYLNSG PGGIAGAFIH KKHEGTSRPY
     LQGWWGVQLN ERFRMDHDAS FMPGVRGLQL SNPGVLQTVA LLGSLEIYEQ TDMASLRAKS
     LKLTAYLEQL MQALVNEEGH APRFEIITPT DPERRGCQLS ILFKVDIDAA FEALEKRGVV
     CDVRRPDVMR IAPVPLYNTF TDVYRFVTTL RDALNASASS
 
 
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