ID   A4WSW3_CERS5            Unreviewed;       400 AA.
AC   A4WSW3;
DT   29-MAY-2007, integrated into UniProtKB/TrEMBL.
DT   29-MAY-2007, sequence version 1.
DT   27-MAR-2024, entry version 91.
DE   RecName: Full=Kynureninase {ECO:0000256|HAMAP-Rule:MF_01970, ECO:0000256|PIRNR:PIRNR038800};
DE            EC=3.7.1.3 {ECO:0000256|HAMAP-Rule:MF_01970, ECO:0000256|PIRNR:PIRNR038800};
DE   AltName: Full=L-kynurenine hydrolase {ECO:0000256|HAMAP-Rule:MF_01970};
GN   Name=kynU {ECO:0000256|HAMAP-Rule:MF_01970};
GN   OrderedLocusNames=Rsph17025_1584 {ECO:0000313|EMBL:ABP70477.1};
OS   Cereibacter sphaeroides (strain ATCC 17025 / ATH 2.4.3) (Rhodobacter
OS   sphaeroides).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodobacterales;
OC   Paracoccaceae; Cereibacter.
OX   NCBI_TaxID=349102 {ECO:0000313|EMBL:ABP70477.1};
RN   [1] {ECO:0000313|EMBL:ABP70477.1}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 17025 {ECO:0000313|EMBL:ABP70477.1};
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Chertkov O., Brettin T., Bruce D., Han C., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Kim E., Richardson P., Mackenzie C., Choudhary M.,
RA   Donohue T.J., Kaplan S.;
RT   "Complete sequence of chromosome of Rhodobacter sphaeroides ATCC 17025.";
RL   Submitted (APR-2007) to the EMBL/GenBank/DDBJ databases.
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:0000256|HAMAP-
CC       Rule:MF_01970, ECO:0000256|PIRNR:PIRNR038800}.
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;
CC         Evidence={ECO:0000256|PIRNR:PIRNR038800};
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:0000256|HAMAP-Rule:MF_01970,
CC         ECO:0000256|PIRNR:PIRNR038800};
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000256|HAMAP-Rule:MF_01970,
CC         ECO:0000256|PIRNR:PIRNR038800};
CC   -!- PATHWAY: Amino-acid degradation; L-kynurenine degradation; L-alanine
CC       and anthranilate from L-kynurenine: step 1/1. {ECO:0000256|HAMAP-
CC       Rule:MF_01970, ECO:0000256|PIRNR:PIRNR038800}.
CC   -!- PATHWAY: Cofactor biosynthesis; NAD(+) biosynthesis; quinolinate from
CC       L-kynurenine: step 2/3. {ECO:0000256|HAMAP-Rule:MF_01970,
CC       ECO:0000256|PIRNR:PIRNR038800}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01970,
CC       ECO:0000256|PIRNR:PIRNR038800}.
CC   -!- SIMILARITY: Belongs to the kynureninase family. {ECO:0000256|HAMAP-
CC       Rule:MF_01970, ECO:0000256|PIRNR:PIRNR038800}.
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DR   EMBL; CP000661; ABP70477.1; -; Genomic_DNA.
DR   AlphaFoldDB; A4WSW3; -.
DR   STRING; 349102.Rsph17025_1584; -.
DR   KEGG; rsq:Rsph17025_1584; -.
DR   eggNOG; COG3844; Bacteria.
DR   HOGENOM; CLU_003433_4_1_5; -.
DR   UniPathway; UPA00253; UER00329.
DR   UniPathway; UPA00334; UER00455.
DR   GO; GO:0005737; C:cytoplasm; IEA:InterPro.
DR   GO; GO:0061981; F:3-hydroxykynureninase activity; IEA:RHEA.
DR   GO; GO:0030429; F:kynureninase activity; IEA:UniProtKB-UniRule.
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; IEA:UniProtKB-UniRule.
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:0006569; P:tryptophan catabolic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.90.1150.10; Aspartate Aminotransferase, domain 1; 1.
DR   Gene3D; 3.40.640.10; Type I PLP-dependent aspartate aminotransferase-like (Major domain); 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   NCBIfam; TIGR01814; kynureninase; 1.
DR   PANTHER; PTHR14084; KYNURENINASE; 1.
DR   PANTHER; PTHR14084:SF0; KYNURENINASE; 1.
DR   Pfam; PF00266; Aminotran_5; 1.
DR   PIRSF; PIRSF038800; KYNU; 1.
DR   SUPFAM; SSF53383; PLP-dependent transferases; 1.
PE   3: Inferred from homology;
KW   Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_01970};
KW   Pyridine nucleotide biosynthesis {ECO:0000256|ARBA:ARBA00022642,
KW   ECO:0000256|HAMAP-Rule:MF_01970};
KW   Pyridoxal phosphate {ECO:0000256|ARBA:ARBA00022898, ECO:0000256|HAMAP-
KW   Rule:MF_01970}.
FT   DOMAIN          136..335
FT                   /note="Aminotransferase class V"
FT                   /evidence="ECO:0000259|Pfam:PF00266"
FT   BINDING         89
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01970"
FT   BINDING         90
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01970"
FT   BINDING         117..120
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01970"
FT   BINDING         158
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01970"
FT   BINDING         187
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01970"
FT   BINDING         190
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01970"
FT   BINDING         212
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01970"
FT   BINDING         242
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01970"
FT   BINDING         268
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01970"
FT   MOD_RES         213
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01970"
SQ   SEQUENCE   400 AA;  43329 MW;  B76C43921F6DC989 CRC64;
     MEGAMTDFEA TRAMFDLPEG VIYLDGNSLG PLPRAAAARV AACVTEEWGG MLVTGWNRAG
     WMEMPRRLGD RIGRLVGAEP GTVVLGDTLS IKVFQALAAA CEMRPGRRVI LSDSGNFPSD
     LYMAEGLCRM LGDRELRLVA PEEVEGAITD ELAAVMVTEV DYRTGRRHDM AAITAKAHAA
     GALAIWDLAH SAGALPVRVA EDGADFAVGC TYKYLNSGPG GPAFIYVAPR HGERAVPALS
     GWLGHAAPFA FDLAYRPGRG VERMRVGTPP VIQMAALDAA LDVWDGVDLA RLRTRSLELT
     DLFIAEVETR CPELALATPR DHARRGSQVS FRHPEGYPIM QALIARGVIG DFRAPDILRF
     GFTPLYIGPA EVVRAAAILS EVMEGRLWDR EDYRQRAAVT
//