7S3V

Structure of HsKYNase_66, an evolved variant of human kynureninase with greatly increased activity towards kynurenine

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Protein Modification Annotation

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF22580	e7s3vA1	A: a+b two layers	X: C-terminal domain in some PLP-dependent transferases (From Topology)	H: C-terminal domain in some PLP-dependent transferases (From Topology)	T: C-terminal domain in some PLP-dependent transferases	F: PF22580	ECOD (1.6)
A	PF00266	e7s3vA2	A: a/b three-layered sandwiches	X: PLP-dependent transferases (From Topology)	H: PLP-dependent transferases (From Topology)	T: PLP-dependent transferases	F: PF00266	ECOD (1.6)
B	PF22580	e7s3vB2	A: a+b two layers	X: C-terminal domain in some PLP-dependent transferases (From Topology)	H: C-terminal domain in some PLP-dependent transferases (From Topology)	T: C-terminal domain in some PLP-dependent transferases	F: PF22580	ECOD (1.6)
B	PF00266	e7s3vB1	A: a/b three-layered sandwiches	X: PLP-dependent transferases (From Topology)	H: PLP-dependent transferases (From Topology)	T: PLP-dependent transferases	F: PF00266	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF22580	Kynureninase C-terminal domain (KYNU_C)	Kynureninase C-terminal domain	This entry represents de C-terminal domain of kynureninase [1-5], a member of a large family of catalytically diverse but structurally homologous pyridoxal 5'-phosphate (PLP) dependent enzymes. The Homo sapiens and other eukaryotic constitutive kynur ...	This entry represents de C-terminal domain of kynureninase [1-5], a member of a large family of catalytically diverse but structurally homologous pyridoxal 5'-phosphate (PLP) dependent enzymes. The Homo sapiens and other eukaryotic constitutive kynureninases preferentially catalyse the hydrolytic cleavage of 3-hydroxy-l-kynurenine to produce 3-hydroxyanthranilate and l-alanine, while l-kynurenine is the substrate of many prokaryotic inducible kynureninases [1-5]..	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Kynureninase	hydrolase activity, acting on acid carbon-carbon bonds hydrolase activity 3-hydroxykynureninase activity hydrolase activity, acting on acid carbon-carbon bonds, in ketonic substances catalytic activity identical protein binding protein binding binding protein homodimerization activity protein dimerization activity vitamin binding vitamin B6 binding pyridoxal phosphate binding ion binding hydrolase activity, acting on acid carbon-carbon bonds hydrolase activity 3-hydroxykynureninase activity hydrolase activity, acting on acid carbon-carbon bonds, in ketonic substances catalytic activity identical protein binding protein binding binding protein homodimerization activity protein dimerization activity vitamin binding vitamin B6 binding pyridoxal phosphate binding ion binding organic cyclic compound binding anion binding heterocyclic compound binding small molecule binding kynureninase activity	biological process involved in interspecies interaction between organisms response to stimulus immune response response to other organism defense response response to type II interferon response to cytokine defense response to symbiont response to external stimulus response to biotic stimulus response to peptide response to chemical immune system process defense response to other organism response to stress biological process involved in interspecies interaction between organisms response to stimulus immune response response to other organism defense response response to type II interferon response to cytokine defense response to symbiont response to external stimulus response to biotic stimulus response to peptide response to chemical immune system process defense response to other organism response to stress innate immune response response to external biotic stimulus response to nutrient levels response to organonitrogen compound response to nutrient response to oxygen-containing compound response to vitamin B6 response to nitrogen compound response to vitamin response to organic cyclic compound catabolic process oxoacid metabolic process aromatic amino acid family catabolic process indole-containing compound metabolic process amino acid metabolic process organic acid catabolic process organic acid metabolic process alpha-amino acid metabolic process cellular catabolic process non-proteinogenic amino acid metabolic process cellular ketone metabolic process carboxylic acid catabolic process indolalkylamine metabolic process small molecule metabolic process amino acid catabolic process organonitrogen compound catabolic process organonitrogen compound metabolic process aromatic amino acid metabolic process benzene-containing compound metabolic process cellular metabolic process carboxylic acid metabolic process primary metabolic process tryptophan metabolic process amine metabolic process kynurenine metabolic process tryptophan catabolic process to kynurenine alpha-amino acid catabolic process indole-containing compound catabolic process tryptophan catabolic process metabolic process cellular process small molecule catabolic process biogenic amine metabolic process quinolinate metabolic process small molecule biosynthetic process cellular biosynthetic process organonitrogen compound biosynthetic process dicarboxylic acid metabolic process pyridine-containing compound biosynthetic process organic acid biosynthetic process carboxylic acid biosynthetic process quinolinate biosynthetic process biosynthetic process pyridine-containing compound metabolic process dicarboxylic acid biosynthetic process anthranilate metabolic process monocarboxylic acid metabolic process L-kynurenine metabolic process ketone catabolic process L-kynurenine catabolic process non-proteinogenic amino acid catabolic process L-amino acid catabolic process L-amino acid metabolic process nucleotide biosynthetic process NAD metabolic process nucleobase-containing compound metabolic process purine nucleotide metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process 'de novo' NAD biosynthetic process phosphate-containing compound metabolic process phosphorus metabolic process pyridine nucleotide metabolic process NAD biosynthetic process pyridine nucleotide biosynthetic process nucleoside phosphate metabolic process nicotinamide nucleotide metabolic process nucleotide metabolic process nucleobase-containing compound biosynthetic process purine-containing compound metabolic process nicotinamide nucleotide biosynthetic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process 'de novo' NAD biosynthetic process from tryptophan purine nucleotide biosynthetic process	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle cytosol nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle cytosol nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR015421	Pyridoxal phosphate-dependent transferase, major domain	Homologous Superfamily
A, B	IPR015422	Pyridoxal phosphate-dependent transferase, small domain	Homologous Superfamily
A, B	IPR010111	Kynureninase	Family
A, B	IPR015424	Pyridoxal phosphate-dependent transferase	Homologous Superfamily
A, B	IPR000192	Aminotransferase class V domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q16719	encephalopathy due to hydroxykynureninuria Inflammation lymphoplasmacytic lymphoma malignant glioma MALT lymphoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia adrenal cortex carcinoma sinusitis brain disease ulcerative colitis Crohn disease lung cancer major depressive disorder malignant mesothelioma encephalopathy due to hydroxykynureninuria Inflammation lymphoplasmacytic lymphoma malignant glioma MALT lymphoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia adrenal cortex carcinoma sinusitis brain disease ulcerative colitis Crohn disease lung cancer major depressive disorder malignant mesothelioma neurodegenerative disease pancreatic ductal adenocarcinoma pilocytic astrocytoma allergic rhinitis Sjogren syndrome breast carcinoma vertebral, cardiac, renal, and limb defects syndrome 2 cutaneous lupus erythematosus glioblastoma invasive ductal breast carcinoma lung carcinoma malignant ependymoma malignant pancreatic neoplasm pancreatic intraductal papillary-mucinous neoplasm psoriasis atopic eczema tuberculosis congenital anomaly of kidney and urinary tract cystic fibrosis ductal breast carcinoma in situ IgA glomerulonephritis

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A, B	CSX	Parent Component: CYS RESID: AA0451 PSI-MOD : 2'-(S-L-cysteinyl)-6'-hydroxy-L-tryptophan sulfoxide MOD:01380
A, B	LLP	Parent Component: LYS RESID: AA0451 , AA0119 PSI-MOD : 2'-(S-L-cysteinyl)-6'-hydroxy-L-tryptophan sulfoxide MOD:01380 , N6-pyridoxal phosphate-L-lysine MOD:00128

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.