3AQU

Crystal structure of a class V chitinase from Arabidopsis thaliana

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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_1	e3aquA2	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase_1	ECOD (1.6)
A	Glyco_hydro_18	e3aquA1	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_1	e3aquB1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase_1	ECOD (1.6)
B	Glyco_hydro_18	e3aquB2	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_1	e3aquC1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase_1	ECOD (1.6)
C	Glyco_hydro_18	e3aquC2	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_1	e3aquD1	A: a+b two layers	X: FKBP-like	H: Chitinase insertion domain (From Topology)	T: Chitinase insertion domain	F: GH18_chitolectin_chitotriosidase_1	ECOD (1.6)
D	Glyco_hydro_18	e3aquD2	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)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	At4g19810	chitinase activity hydrolase activity, acting on glycosyl bonds hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity endochitinase activity chitin binding binding carbohydrate derivative binding exochitinase activity	response to lipid response to stimulus response to jasmonic acid response to hormone response to fatty acid response to chemical response to endogenous stimulus response to oxygen-containing compound response to abscisic acid response to alcohol carbohydrate derivative catabolic process catabolic process carbohydrate derivative metabolic process chitin metabolic process response to lipid response to stimulus response to jasmonic acid response to hormone response to fatty acid response to chemical response to endogenous stimulus response to oxygen-containing compound response to abscisic acid response to alcohol carbohydrate derivative catabolic process catabolic process carbohydrate derivative metabolic process chitin metabolic process aminoglycan catabolic process macromolecule catabolic process glucosamine-containing compound catabolic process amino sugar catabolic process aminoglycan metabolic process amino sugar metabolic process metabolic process macromolecule metabolic process chitin catabolic process glucosamine-containing compound metabolic process carbohydrate metabolic process polysaccharide metabolic process polysaccharide catabolic process carbohydrate catabolic process primary metabolic process response to osmotic stress response to stress response to abiotic stimulus response to salt stress	membrane-bounded organelle intracellular anatomical structure intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle organelle secretory vesicle cytoplasm vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR029070	Chitinase insertion domain superfamily	Homologous Superfamily
A, B, C, D	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A, B, C, D	IPR050314	Glycosyl Hydrolase Family 18	Family
A, B, C, D	IPR001223	Glycoside hydrolase family 18, catalytic domain	Domain
A, B, C, D	IPR011583	Chitinase II/V-like, catalytic domain	Domain

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 R01GM157729.