Annotations: 1TA3

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ta3a_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	(Trans)glycosidases	Type II chitinase	Xylanase inhibitor protein I, XIP-I	(Triticum aestivum ) [TaxId: 4565 ],	SCOPe (2.08)
B	d1ta3b_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	(Trans)glycosidases	beta-glycanases	Xylanase A, catalytic core	(Aspergillus nidulans ) [TaxId: 162425 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Type II chitinase	8027733	4003194	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	(Trans)glycosidases	8040112	3000313	SCOP2 (2022-06-29)
B	SCOP2 Family	beta-glycanases	8027734	4003164	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	(Trans)glycosidases	8040113	3000313	SCOP2 (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	Glyco_hydro_18_1	e1ta3A1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_18_1	ECOD (1.6)
B	Glyco_hydro_10	e1ta3B1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_10	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)
B	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00704	Glycosyl hydrolases family 18 (Glyco_hydro_18)	Glycosyl hydrolases family 18	-	Domain
B	PF00331	Glycosyl hydrolase family 10 (Glyco_hydro_10)	Glycosyl hydrolase family 10	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	xylanase inhibitor protein I	enzyme regulator activity molecular function inhibitor activity molecular function regulator activity enzyme inhibitor activity chitinase activity hydrolase activity, acting on glycosyl bonds hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity	carbohydrate metabolic process primary metabolic process metabolic process biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response response to external stimulus response to biotic stimulus defense response to fungus defense response to other organism response to stress response to external biotic stimulus response to fungus	extracellular region cellular anatomical entity
B	Endo-1,4-beta-xylanase	xylanase activity hydrolase activity, acting on glycosyl bonds endo-1,4-beta-xylanase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity	carbohydrate metabolic process xylan catabolic process catabolic process hemicellulose metabolic process cell wall organization or biogenesis carbohydrate catabolic process hemicellulose catabolic process primary metabolic process macromolecule catabolic process cell wall macromolecule catabolic process xylan metabolic process polysaccharide metabolic process polysaccharide catabolic process metabolic process carbohydrate metabolic process xylan catabolic process catabolic process hemicellulose metabolic process cell wall organization or biogenesis carbohydrate catabolic process hemicellulose catabolic process primary metabolic process macromolecule catabolic process cell wall macromolecule catabolic process xylan metabolic process polysaccharide metabolic process polysaccharide catabolic process metabolic process cellular process macromolecule metabolic process cell wall polysaccharide metabolic process cell wall macromolecule metabolic process cell wall polysaccharide catabolic process	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A	IPR045321	Chitinase Cts1-like	Domain
A	IPR050542	Glycosyl Hydrolase 18 Family Chitinases	Family
A	IPR001223	Glycoside hydrolase family 18, catalytic domain	Domain
B	IPR044846	Glycoside hydrolase family 10	Family
B	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
B	IPR001000	Glycoside hydrolase family 10 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 R01GM133198.