Annotations: 9JUB

Cryo-EM structure of human hyaluronidase PH-20

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Protein Family Annotation
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)
C	KR, adh_short_C2	e9jubC01	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: KR, adh_short_C2	ECOD (v294.2)
B	KR, adh_short_C2	e9jubB01	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: KR, adh_short_C2	ECOD (v294.2)
A	KR, adh_short_C2	e9jubA01	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: KR, adh_short_C2	ECOD (v294.2)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C	Light Chain	IGKV1	Kappa	hyaluronidase ph-20	SAbDab (2026-05-15)
B	Heavy Chain	IGHV1	-	hyaluronidase ph-20	SAbDab (2026-05-15)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01630	Hyaluronidase (Glyco_hydro_56)	Hyaluronidase		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	Light chain of 79C11Fab	-	-	-
B	Heavy chain of 79C11Fab	-	-	-
A	Hyaluronidase PH-20	hyalurononglucosaminidase activity hydrolase activity, acting on glycosyl bonds hexosaminidase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity	fusion of sperm to egg plasma membrane involved in single fertilization sexual reproduction reproductive process fertilization multicellular organismal reproductive process cellular process involved in reproduction in multicellular organism cellular process single fertilization carbohydrate metabolic process primary metabolic process metabolic process cell adhesion sperm-egg recognition cell-cell recognition fusion of sperm to egg plasma membrane involved in single fertilization sexual reproduction reproductive process fertilization multicellular organismal reproductive process cellular process involved in reproduction in multicellular organism cellular process single fertilization carbohydrate metabolic process primary metabolic process metabolic process cell adhesion sperm-egg recognition cell-cell recognition binding of sperm to zona pellucida cell recognition carbohydrate derivative catabolic process catabolic process hyaluronan catabolic process glycosaminoglycan metabolic process carbohydrate derivative metabolic process aminoglycan catabolic process macromolecule catabolic process glycosaminoglycan catabolic process hyaluronan metabolic process aminoglycan metabolic process macromolecule metabolic process	cellular anatomical structure membrane side of membrane cell periphery plasma membrane acrosomal vesicle membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle cellular anatomical structure membrane side of membrane cell periphery plasma membrane acrosomal vesicle membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR018155	Hyaluronidase	Family
A	IPR001439	Hyaluronidase PH20/Hyaluronidase-5	Family
A	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A	IPR013785	Aldolase-type TIM barrel	Homologous Superfamily

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