8TQI | pdb_00008tqi

Hemagglutinin-neuraminidase from Human parainfluenza virus type 3: complex with rPIV3-23 and rPIV3-28 Fabs

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Sialidases	8080113	3001607	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Sialidases	8080113	3001607	SCOP2B (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	F5_F8_type_C	e8tqiA01	A: a/b three-layered sandwiches	X: ATP-grasp_6	H: ATP-grasp_6	T: ATP-grasp_6	F: F5_F8_type_C	ECOD (v294.1)
C	F5_F8_type_C	e8tqiC01	A: a/b three-layered sandwiches	X: ATP-grasp_6	H: ATP-grasp_6	T: ATP-grasp_6	F: F5_F8_type_C	ECOD (v294.1)
D	F5_F8_type_C	e8tqiD01	A: a/b three-layered sandwiches	X: ATP-grasp_6	H: ATP-grasp_6	T: ATP-grasp_6	F: F5_F8_type_C	ECOD (v294.1)
E	F5_F8_type_C	e8tqiE01	A: a/b three-layered sandwiches	X: ATP-grasp_6	H: ATP-grasp_6	T: ATP-grasp_6	F: F5_F8_type_C	ECOD (v294.1)
F	F5_F8_type_C	e8tqiF01	A: a/b three-layered sandwiches	X: ATP-grasp_6	H: ATP-grasp_6	T: ATP-grasp_6	F: F5_F8_type_C	ECOD (v294.1)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C, G [auth H]	Heavy Chain	IGHV3	-	hemagglutinin-neuraminidase	SAbDab (2026-04-17)
D, H [auth L]	Light Chain	IGKV1	Kappa	hemagglutinin-neuraminidase	SAbDab (2026-04-17)
E, I	Heavy Chain	IGHV4	-	hemagglutinin-neuraminidase	SAbDab (2026-04-17)
F, J	Light Chain	IGKV3	Kappa	hemagglutinin-neuraminidase	SAbDab (2026-04-17)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Hemagglutinin-neuraminidase	hydrolase activity, acting on glycosyl bonds alpha-sialidase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity exo-alpha-sialidase activity catalytic activity host cell surface binding binding host cell surface receptor binding	virion attachment to host cell biological process involved in interspecies interaction between organisms adhesion of symbiont to host cell viral process viral life cycle adhesion of symbiont to host biological process involved in interaction with host biological process involved in symbiotic interaction symbiont entry into host cell symbiont entry into host	virion component viral membrane viral envelope host cell plasma membrane host cellular component cellular anatomical structure host cell part host cell membrane other organism part virion membrane
C, G [auth H]	Heavy chain Fab rPIV3-28	-	-	-
D, H [auth L]	Light chain Fab rPIV3-28	-	-	-
E, I	Heavy chain Fab rPIV3-23	-	-	-
F, J	Light chain Fab rPIV3-23	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR016285	Haemagglutinin-neuraminidase	Family
A, B	IPR036278	Sialidase superfamily	Homologous Superfamily
A, B	IPR000665	Haemagglutinin/haemagglutinin-neuraminidase, paramyxovirus	Family

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.