Annotations: 9N4P

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2B Superfamily	Type 2 solute binding protein-like	8032346	3000083	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Type 2 solute binding protein-like	8032346	3000083	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Type 2 solute binding protein-like	8032346	3000083	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Type 2 solute binding protein-like	8032346	3000083	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Type 2 solute binding protein-like	8032346	3000083	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Type 2 solute binding protein-like	8032346	3000083	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Type 2 solute binding protein-like	8032346	3000083	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Type 2 solute binding protein-like	8032346	3000083	SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF00060	Ligand-gated ion channel (Lig_chan)	Ligand-gated ion channel	-	Family
A, B, C, D	PF01094	Receptor family ligand binding region (ANF_receptor)	Receptor family ligand binding region	This family includes extracellular ligand binding domains of a wide range of receptors. This family also includes the bacterial amino acid binding proteins of known structure.	Domain
A, B, C, D	PF10613	Ligated ion channel L-glutamate- and glycine-binding site (Lig_chan-Glu_bd)	Ligated ion channel L-glutamate- and glycine-binding site	This region, sometimes called the S1 domain, is the luminal domain just upstream of the first, M1, transmembrane region of transmembrane ion-channel proteins, and it binds L-glutamate and glycine [2]. It is found in association with Lig_chan, Pfam:PF ...	This region, sometimes called the S1 domain, is the luminal domain just upstream of the first, M1, transmembrane region of transmembrane ion-channel proteins, and it binds L-glutamate and glycine [2]. It is found in association with Lig_chan, Pfam:PF00060.	Domain
E	PF00431	CUB domain (CUB)	CUB domain		Domain
E	PF00057	Low-density lipoprotein receptor domain class A (Ldl_recept_a)	Low-density lipoprotein receptor domain class A	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Glutamate receptor ionotropic, kainate 2	gated channel activity monoatomic ion channel activity excitatory extracellular ligand-gated monoatomic ion channel activity ligand-gated channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity passive transmembrane transporter activity extracellularly glutamate-gated ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity ubiquitin protein ligase binding protein binding gated channel activity monoatomic ion channel activity excitatory extracellular ligand-gated monoatomic ion channel activity ligand-gated channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity passive transmembrane transporter activity extracellularly glutamate-gated ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity ubiquitin protein ligase binding protein binding binding ubiquitin-like protein ligase binding enzyme binding identical protein binding PDZ domain binding protein domain specific binding glutamate receptor activity molecular transducer activity transmembrane signaling receptor activity signaling receptor activity ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential scaffold protein binding monoatomic cation transmembrane transporter activity transmitter-gated monoatomic ion channel activity glutamate-gated receptor activity neurotransmitter receptor activity ligand-gated calcium channel activity ligand-gated monoatomic cation channel activity calcium channel activity glutamate-gated calcium ion channel activity carboxylic acid transmembrane transporter activity amino acid transmembrane transporter activity monoatomic cation channel activity calcium ion transmembrane transporter activity transmitter-gated channel activity metal ion transmembrane transporter activity ubiquitin-like protein conjugating enzyme binding ubiquitin conjugating enzyme binding SNARE binding transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential postsynaptic neurotransmitter receptor activity neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential sodium channel activity kainate selective glutamate receptor activity potassium ion transmembrane transporter activity ligand-gated sodium channel activity sodium ion transmembrane transporter activity potassium channel activity	cellular response to stimulus multicellular organismal process regulation of postsynaptic membrane potential system process regulation of cellular process response to stimulus signaling modulation of chemical synaptic transmission regulation of system process regulation of signal transduction chemical synaptic transmission, postsynaptic cell communication synaptic signaling modulation of excitatory postsynaptic potential cellular response to stimulus multicellular organismal process regulation of postsynaptic membrane potential system process regulation of cellular process response to stimulus signaling modulation of chemical synaptic transmission regulation of system process regulation of signal transduction chemical synaptic transmission, postsynaptic cell communication synaptic signaling modulation of excitatory postsynaptic potential regulation of multicellular organismal process signal transduction regulation of biological quality trans-synaptic signaling regulation of biological process regulation of signaling cell surface receptor signaling pathway nervous system process biological regulation cell-cell signaling chemical synaptic transmission regulation of nervous system process regulation of trans-synaptic signaling regulation of response to stimulus anterograde trans-synaptic signaling regulation of cell communication cellular process excitatory postsynaptic potential regulation of membrane potential regulation of JNK cascade regulation of MAPK cascade intracellular signal transduction regulation of intracellular signal transduction JNK cascade intracellular signaling cassette MAPK cascade presynaptic modulation of chemical synaptic transmission detection of external stimulus thermoception detection of cold stimulus involved in thermoception response to external stimulus sensory perception of temperature stimulus detection of temperature stimulus involved in sensory perception response to temperature stimulus detection of abiotic stimulus detection of stimulus sensory perception detection of temperature stimulus involved in thermoception sensory perception of cold stimulus detection of temperature stimulus response to abiotic stimulus detection of stimulus involved in sensory perception neuron apoptotic process positive regulation of programmed cell death regulation of apoptotic process positive regulation of biological process regulation of programmed cell death cell death positive regulation of apoptotic process apoptotic process positive regulation of neuron apoptotic process programmed cell death positive regulation of cellular process regulation of neuron apoptotic process inorganic ion homeostasis intracellular calcium ion homeostasis homeostatic process calcium ion homeostasis cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis regulation of neuronal synaptic plasticity regulation of synaptic plasticity regulation of long-term neuronal synaptic plasticity negative regulation of signaling synaptic transmission, glutamatergic negative regulation of biological process regulation of synaptic transmission, glutamatergic negative regulation of synaptic transmission negative regulation of cell communication negative regulation of cellular process negative regulation of synaptic transmission, glutamatergic inhibitory postsynaptic potential localization cellular localization receptor clustering macromolecule localization intracellular protein localization localization within membrane protein localization to membrane positive regulation of cell communication positive regulation of synaptic transmission positive regulation of signaling negative regulation of neuron apoptotic process negative regulation of programmed cell death negative regulation of apoptotic process regulation of short-term neuronal synaptic plasticity action potential transmission of nerve impulse neuronal action potential behavioral defense response behavior fear response behavioral fear response defense response response to stress multicellular organismal response to stress	postsynaptic specialization membrane postsynaptic specialization synapse membrane plasma membrane postsynaptic density membrane synaptic membrane cell periphery postsynaptic density postsynapse cellular anatomical structure neuron to neuron synapse organelle cell junction postsynaptic specialization membrane postsynaptic specialization synapse membrane plasma membrane postsynaptic density membrane synaptic membrane cell periphery postsynaptic density postsynapse cellular anatomical structure neuron to neuron synapse organelle cell junction postsynaptic membrane asymmetric synapse plasma membrane region somatodendritic compartment cell body perikaryon neuronal cell body protein-containing complex sodium channel complex plasma membrane protein complex membrane protein complex potassium channel complex cation channel complex transporter complex kainate selective glutamate receptor complex receptor complex ionotropic glutamate receptor complex transmembrane transporter complex neurotransmitter receptor complex plasma membrane signaling receptor complex monoatomic ion channel complex presynapse presynaptic membrane cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection glutamatergic synapse axon axon terminus distal axon terminal bouton neuron projection terminus mossy fiber rosette neuron projection cytoplasm intracellular anatomical structure cytoplasmic region plasma membrane bounded cell projection cytoplasm dendrite cytoplasm cytoplasm hippocampal mossy fiber to CA3 synapse
E	Neuropilin and tolloid-like protein 2	ionotropic glutamate receptor binding protein binding binding signaling receptor binding glutamate receptor binding	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 regulation of localization regulation of cellular process regulation of protein localization regulation of neurotransmitter receptor localization to postsynaptic specialization membrane regulation of protein localization to synapse regulation of protein localization to membrane regulation of receptor localization to synapse regulation of biological process regulation of protein localization to cell periphery regulation of cellular localization	postsynaptic density postsynapse cellular anatomical structure neuron to neuron synapse postsynaptic specialization organelle synapse cell junction asymmetric synapse postsynaptic specialization membrane membrane plasma membrane postsynaptic density membrane synaptic membrane postsynaptic density postsynapse cellular anatomical structure neuron to neuron synapse postsynaptic specialization organelle synapse cell junction asymmetric synapse postsynaptic specialization membrane membrane plasma membrane postsynaptic density membrane synaptic membrane cell periphery postsynaptic membrane plasma membrane region glutamatergic synapse

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR028082	Periplasmic binding protein-like I	Homologous Superfamily
A, B, C, D	IPR001508	Ionotropic glutamate receptor, metazoa	Family
A, B, C, D	IPR001828	Receptor, ligand binding region	Domain
A, B, C, D	IPR001320	Ionotropic glutamate receptor, C-terminal	Domain
A, B, C, D	IPR019594	Ionotropic glutamate receptor, L-glutamate and glycine-binding domain	Domain
A, B, C, D	IPR015683	Ionotropic glutamate receptor	Family
E	IPR035914	Spermadhesin, CUB domain superfamily	Homologous Superfamily
E	IPR002172	Low-density lipoprotein (LDL) receptor class A repeat	Repeat
E	IPR023415	Low-density lipoprotein (LDL) receptor class A, conserved site	Conserved Site
E	IPR036055	LDL receptor-like superfamily	Homologous Superfamily
E	IPR000859	CUB domain	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.