4AY1

Human YKL-39 is a pseudo-chitinase with retained chitooligosaccharide binding properties

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Chitinase insertion domain	8101048	3000666	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Chitinase insertion domain	8101048	3000666	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Chitinase insertion domain	8101048	3000666	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Chitinase insertion domain	8101048	3000666	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Chitinase insertion domain	8101048	3000666	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Chitinase insertion domain	8101048	3000666	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Chitinase insertion domain	8101048	3000666	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Chitinase insertion domain	8101048	3000666	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	Chitinase insertion domain	8101048	3000666	SCOP2B (2022-06-29)
J	SCOP2 Family	Type II chitinase	8099183	4003194	SCOP2 (2022-06-29)
J	SCOP2 Family	Chitinase insertion domain	8101047	4001072	SCOP2 (2022-06-29)
J	SCOP2 Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2 (2022-06-29)
J	SCOP2 Superfamily	Chitinase insertion domain	8101048	3000666	SCOP2 (2022-06-29)
K	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Chitinase insertion domain	8101048	3000666	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Chitinase insertion domain	8101048	3000666	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	(Trans)glycosidases	8099184	3000313	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	GH18_chitolectin_chitotriosidase	e4ay1A1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase	ECOD (1.6)
A	Glyco_hydro_18	e4ay1A2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18	ECOD (1.6)
B	GH18_chitolectin_chitotriosidase	e4ay1B1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase	ECOD (1.6)
B	Glyco_hydro_18	e4ay1B2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18	ECOD (1.6)
C	GH18_chitolectin_chitotriosidase	e4ay1C1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase	ECOD (1.6)
C	Glyco_hydro_18	e4ay1C2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18	ECOD (1.6)
D	GH18_chitolectin_chitotriosidase	e4ay1D1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase	ECOD (1.6)
D	Glyco_hydro_18	e4ay1D2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18	ECOD (1.6)
E	GH18_chitolectin_chitotriosidase	e4ay1E1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase	ECOD (1.6)
E	Glyco_hydro_18	e4ay1E2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18	ECOD (1.6)
F	GH18_chitolectin_chitotriosidase	e4ay1F1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase	ECOD (1.6)
F	Glyco_hydro_18	e4ay1F2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18	ECOD (1.6)
G	GH18_chitolectin_chitotriosidase	e4ay1G1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase	ECOD (1.6)
G	Glyco_hydro_18	e4ay1G2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18	ECOD (1.6)
H	GH18_chitolectin_chitotriosidase	e4ay1H1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase	ECOD (1.6)
H	Glyco_hydro_18	e4ay1H2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18	ECOD (1.6)
I	GH18_chitolectin_chitotriosidase	e4ay1I1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase	ECOD (1.6)
I	Glyco_hydro_18	e4ay1I2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18	ECOD (1.6)
J	GH18_chitolectin_chitotriosidase	e4ay1J1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase	ECOD (1.6)
J	Glyco_hydro_18	e4ay1J2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18	ECOD (1.6)
K	GH18_chitolectin_chitotriosidase	e4ay1K1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase	ECOD (1.6)
K	Glyco_hydro_18	e4ay1K2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18	ECOD (1.6)
L	GH18_chitolectin_chitotriosidase	e4ay1L1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase	ECOD (1.6)
L	Glyco_hydro_18	e4ay1L2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
A	3.10.50.10	Alpha Beta	Roll	Chitinase A	domain 3	CATH (4.3.0)
B	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
B	3.10.50.10	Alpha Beta	Roll	Chitinase A	domain 3	CATH (4.3.0)
C	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
C	3.10.50.10	Alpha Beta	Roll	Chitinase A	domain 3	CATH (4.3.0)
D	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
D	3.10.50.10	Alpha Beta	Roll	Chitinase A	domain 3	CATH (4.3.0)
E	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
E	3.10.50.10	Alpha Beta	Roll	Chitinase A	domain 3	CATH (4.3.0)
F	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
F	3.10.50.10	Alpha Beta	Roll	Chitinase A	domain 3	CATH (4.3.0)
G	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
G	3.10.50.10	Alpha Beta	Roll	Chitinase A	domain 3	CATH (4.3.0)
H	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
H	3.10.50.10	Alpha Beta	Roll	Chitinase A	domain 3	CATH (4.3.0)
I	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
I	3.10.50.10	Alpha Beta	Roll	Chitinase A	domain 3	CATH (4.3.0)
J	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
J	3.10.50.10	Alpha Beta	Roll	Chitinase A	domain 3	CATH (4.3.0)
K	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
K	3.10.50.10	Alpha Beta	Roll	Chitinase A	domain 3	CATH (4.3.0)
L	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
L	3.10.50.10	Alpha Beta	Roll	Chitinase A	domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	PF00704	Glycosyl hydrolases family 18 (Glyco_hydro_18)	Glycosyl hydrolases family 18	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	CHITINASE-3-LIKE PROTEIN 2	binding carbohydrate binding chitin binding carbohydrate derivative binding hydrolase activity catalytic activity	organonitrogen compound catabolic process carbohydrate derivative catabolic process catabolic process organonitrogen compound metabolic process carbohydrate derivative metabolic process chitin metabolic process aminoglycan catabolic process macromolecule catabolic process glucosamine-containing compound catabolic process organic substance metabolic process amino sugar catabolic process aminoglycan metabolic process amino sugar metabolic process metabolic process organonitrogen compound catabolic process carbohydrate derivative catabolic process catabolic process organonitrogen compound metabolic process carbohydrate derivative metabolic process chitin metabolic process aminoglycan catabolic process macromolecule catabolic process glucosamine-containing compound catabolic process organic substance metabolic process amino sugar catabolic process aminoglycan metabolic process amino sugar metabolic process metabolic process macromolecule metabolic process organic substance catabolic process chitin catabolic process glucosamine-containing compound metabolic process carbohydrate metabolic process primary metabolic process	extracellular region cellular anatomical entity extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR011583	Chitinase II	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR029070	Chitinase insertion domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR001223	Glycoside hydrolase family 18, catalytic domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	Pharos: Q15782	chronic obstructive pulmonary disease breast cancer glioblastoma lung adenocarcinoma malignant ependymoma non-small cell lung carcinoma psoriasis head and neck cancer lung cancer malignant glioma osteosarcoma tuberculosis cutaneous lupus erythematosus interstitial cystitis lung carcinoma chronic obstructive pulmonary disease breast cancer glioblastoma lung adenocarcinoma malignant ependymoma non-small cell lung carcinoma psoriasis head and neck cancer lung cancer malignant glioma osteosarcoma tuberculosis cutaneous lupus erythematosus interstitial cystitis lung carcinoma malignant mesothelioma pilocytic astrocytoma ulcerative colitis