Annotations: 4PYS

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Rv3651-like_N	e4pysB1	A: alpha arrays	X: Cysteine proteinases-like	H: SH3	T: SH3	F: Rv3651-like_N	ECOD (v295)
A	zf-CCHC	e4pysA1	A: alpha arrays	X: Cysteine proteinases-like	H: SH3	T: SH3	F: zf-CCHC	ECOD (v295)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.30.379.10	Alpha Beta	2-Layer Sandwich	Chitobiase	domain 2	CATH (4.3.0)
B	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)
A	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)

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

Chains	Accession	Name	Type
A, B	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A, B	IPR029018	Beta-hexosaminidase-like, domain 2	Homologous Superfamily
A, B	IPR015883	Beta-hexosaminidase, catalytic domain	Domain
A, B	IPR025705	Beta-hexosaminidase	Family
A, B	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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

4PYS | pdb_00004pys