Annotations: 3SUT

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Glyco_hydro_20	e3sutA1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_20	ECOD (1.6)
A	Glyco_hydro_20b,RNAse_Pc_like	e3sutA2	A: mixed a+b and a/b	X: Zincin-like	H: beta-N-acetylhexosaminidase-like domain (From Topology)	T: beta-N-acetylhexosaminidase-like domain	F: Glyco_hydro_20b,RNAse_Pc_like	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	3.30.379.10	Alpha Beta	2-Layer Sandwich	Chitobiase	domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02838	Glycosyl hydrolase family 20, domain 2 (Glyco_hydro_20b)	Glycosyl hydrolase family 20, domain 2	This domain has a zincin-like fold.	Domain
A	PF00728	Glycosyl hydrolase family 20, catalytic domain (Glyco_hydro_20)	Glycosyl hydrolase family 20, catalytic domain	This domain has a TIM barrel fold.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Beta-hexosaminidase	binding carbohydrate binding hydrolase activity, acting on glycosyl bonds hexosaminidase activity beta-N-acetylhexosaminidase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity	glycosaminoglycan metabolic process aminoglycan metabolic process carbohydrate derivative metabolic process metabolic process cellular process macromolecule metabolic process carbohydrate metabolic process polysaccharide metabolic process catabolic process polysaccharide catabolic process carbohydrate catabolic process primary metabolic process macromolecule catabolic process	cellular anatomical structure membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR002105	Dockerin type I repeat	Repeat
A	IPR016134	Dockerin domain	Domain
A	IPR018247	EF-Hand 1, calcium-binding site	Binding Site
A	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A	IPR029018	Beta-hexosaminidase-like, domain 2	Homologous Superfamily
A	IPR015883	Glycoside hydrolase family 20, catalytic domain	Domain
A	IPR008965	CBM2/CBM3, carbohydrate-binding domain superfamily	Homologous Superfamily
A	IPR002102	Cellulosome anchoring protein, cohesin domain	Domain
A	IPR013320	Concanavalin A-like lectin/glucanase domain superfamily	Homologous Superfamily
A	IPR036439	Dockerin domain superfamily	Homologous Superfamily
A	IPR025705	Beta-hexosaminidase	Family
A	IPR015882	Beta-hexosaminidase, bacterial type, N-terminal	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.