Annotations: 9LAD

Crystal structure of the complex between Neuronal Pentraxin 2 (NP2 PTX) and antibody fragment VHH N1

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody 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)
B [auth C]	Fer2_3	e9ladC1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: Fer2_3	ECOD (v295.2)
A [auth B]	PAD_N	e9ladB1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: PAD_N	ECOD (v295.2)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A [auth B]	Heavy Chain	IGHV1	-	neuronal pentraxin-2	SAbDab (2026-10-02)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B [auth C]	Neuronal pentraxin-2	-	protein localization to postsynaptic specialization membrane protein localization to postsynaptic membrane protein localization to cell periphery cellular localization protein localization to synapse biological regulation localization within membrane protein localization to membrane protein-containing complex localization neurotransmitter receptor localization to postsynaptic specialization membrane localization regulation of postsynaptic membrane neurotransmitter receptor levels macromolecule localization protein localization to organelle protein localization to postsynaptic specialization membrane protein localization to postsynaptic membrane protein localization to cell periphery cellular localization protein localization to synapse biological regulation localization within membrane protein localization to membrane protein-containing complex localization neurotransmitter receptor localization to postsynaptic specialization membrane localization regulation of postsynaptic membrane neurotransmitter receptor levels macromolecule localization protein localization to organelle cellular process protein localization to postsynapse intracellular protein localization regulation of biological quality protein localization to cell junction receptor localization to synapse	cellular anatomical structure synaptic cleft extracellular region extrinsic component of plasma membrane postsynaptic specialization membrane postsynaptic specialization synapse membrane plasma membrane synaptic membrane cell periphery extrinsic component of synaptic membrane postsynapse organelle cellular anatomical structure synaptic cleft extracellular region extrinsic component of plasma membrane postsynaptic specialization membrane postsynaptic specialization synapse membrane plasma membrane synaptic membrane cell periphery extrinsic component of synaptic membrane postsynapse organelle postsynaptic membrane cell junction extrinsic component of postsynaptic specialization membrane plasma membrane region extrinsic component of membrane extrinsic component of postsynaptic membrane glutamatergic synapse
A [auth B]	N1 VHH	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth C]	IPR013320	Concanavalin A-like lectin/glucanase domain superfamily	Homologous Superfamily
B [auth C]	IPR030476	Pentaxin, conserved site	Conserved Site
B [auth C]	IPR001759	Pentraxin domain	Domain
B [auth C]	IPR051360	Neuronal Pentraxin and Related	Family