Annotations: 1EWK

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ewka_	Alpha and beta proteins (a/b)	Periplasmic binding protein-like I	Periplasmic binding protein-like I	L-arabinose binding protein-like	Metabotropic glutamate receptor subtype 1	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
B	d1ewkb_	Alpha and beta proteins (a/b)	Periplasmic binding protein-like I	Periplasmic binding protein-like I	L-arabinose binding protein-like	Metabotropic glutamate receptor subtype 1	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Metabotropic glutamate receptor ligand-binding domain-like	8020909	4007730	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Type 1 solute binding protein-like	8033289	3000125	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Type 1 solute binding protein-like	8033289	3000125	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	ANF_receptor_2nd_1	e1ewkA2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Periplasmic binding protein-like I	F: ANF_receptor_2nd_1	ECOD (1.6)
B	ANF_receptor_2nd_1	e1ewkB2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Periplasmic binding protein-like I	F: ANF_receptor_2nd_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)
B	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01094	Receptor family ligand binding region (ANF_receptor)	Receptor family ligand binding region	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	METABOTROPIC GLUTAMATE RECEPTOR SUBTYPE 1	neurotransmitter receptor activity neurotransmitter receptor activity involved in regulation of postsynaptic cytosolic calcium ion concentration G protein-coupled neurotransmitter receptor activity involved in regulation of postsynaptic cytosolic calcium ion concentration molecular transducer activity postsynaptic neurotransmitter receptor activity G protein-coupled receptor activity transmembrane signaling receptor activity signaling receptor activity G protein-coupled neurotransmitter receptor activity glutamate receptor activity G protein-coupled glutamate receptor activity PLC activating G protein-coupled glutamate receptor activity adenylate cyclase inhibiting G protein-coupled glutamate receptor activity G protein-coupled receptor activity involved in regulation of postsynaptic membrane potential neurotransmitter receptor activity neurotransmitter receptor activity involved in regulation of postsynaptic cytosolic calcium ion concentration G protein-coupled neurotransmitter receptor activity involved in regulation of postsynaptic cytosolic calcium ion concentration molecular transducer activity postsynaptic neurotransmitter receptor activity G protein-coupled receptor activity transmembrane signaling receptor activity signaling receptor activity G protein-coupled neurotransmitter receptor activity glutamate receptor activity G protein-coupled glutamate receptor activity PLC activating G protein-coupled glutamate receptor activity adenylate cyclase inhibiting G protein-coupled glutamate receptor activity G protein-coupled receptor activity involved in regulation of postsynaptic membrane potential transcription factor binding RNA polymerase II-specific DNA-binding transcription factor binding nuclear receptor binding protein binding binding DNA-binding transcription factor binding nuclear estrogen receptor binding	cellular response to stimulus trans-synaptic signaling multicellular organismal process regulation of biological process system process regulation of cellular process cell surface receptor signaling pathway response to stimulus nervous system process signaling biological regulation cell-cell signaling chemical synaptic transmission, postsynaptic chemical synaptic transmission cell communication cellular response to stimulus trans-synaptic signaling multicellular organismal process regulation of biological process system process regulation of cellular process cell surface receptor signaling pathway response to stimulus nervous system process signaling biological regulation cell-cell signaling chemical synaptic transmission, postsynaptic chemical synaptic transmission cell communication synaptic signaling anterograde trans-synaptic signaling cellular process signal transduction import into cell nitrogen compound transport carboxylic acid transmembrane transport transport amino acid transmembrane transport L-amino acid transport L-glutamate import localization L-glutamate import across plasma membrane organic acid transmembrane transport organic anion transport carboxylic acid transport organic substance transport import across plasma membrane establishment of localization organic acid transport transmembrane transport amino acid transport acidic amino acid transport dicarboxylic acid transport L-alpha-amino acid transmembrane transport amino acid import across plasma membrane L-glutamate transmembrane transport phospholipase C-activating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway glutamate receptor signaling pathway G protein-coupled glutamate receptor signaling pathway response to electrical stimulus cellular response to electrical stimulus response to abiotic stimulus cellular response to abiotic stimulus cellular response to environmental stimulus regulation of localization regulation of glutamate secretion secretion by cell regulation of secretion by cell regulation of amino acid transport glutamate secretion secretion regulation of transport export from cell regulation of secretion amine transport regulation of organic acid transport regulation of amine transport behavior locomotory behavior inorganic ion homeostasis intracellular calcium ion homeostasis homeostatic process calcium ion homeostasis regulation of postsynaptic cytosolic calcium ion concentration regulation of cytosolic calcium ion concentration cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis regulation of system process sensory perception of pain regulation of nervous system process sensory perception regulation of sensory perception regulation of multicellular organismal process regulation of sensory perception of pain intracellular signal transduction calcium-mediated signaling intracellular signaling cassette positive regulation of cell communication positive regulation of signal transduction positive regulation of biological process regulation of signal transduction positive regulation of response to stimulus regulation of intracellular signal transduction positive regulation of cellular process regulation of signaling positive regulation of MAPK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade regulation of response to stimulus MAPK cascade regulation of cell communication positive regulation of signaling phospholipase C-activating G protein-coupled glutamate receptor signaling pathway synaptic transmission, GABAergic membrane depolarization regulation of biological quality regulation of membrane potential modulation of chemical synaptic transmission synaptic transmission, glutamatergic regulation of synaptic transmission, glutamatergic regulation of trans-synaptic signaling	postsynaptic specialization membrane postsynaptic specialization synapse membrane plasma membrane cellular anatomical entity postsynaptic density membrane synaptic membrane cell periphery postsynaptic density postsynapse neuron to neuron synapse organelle cell junction postsynaptic specialization membrane postsynaptic specialization synapse membrane plasma membrane cellular anatomical entity postsynaptic density membrane synaptic membrane cell periphery postsynaptic density postsynapse neuron to neuron synapse organelle cell junction postsynaptic membrane asymmetric synapse plasma membrane region presynapse presynaptic membrane somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection glutamatergic synapse G protein-coupled receptor homodimeric complex protein-containing complex plasma membrane protein complex membrane protein complex receptor complex G protein-coupled receptor dimeric complex plasma membrane signaling receptor complex G protein-coupled receptor complex neuron spine dendritic spine axon Schaffer collateral - CA1 synapse membrane-bounded organelle intracellular organelle intracellular anatomical structure nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR017978	GPCR family 3, C-terminal	Domain
A, B	IPR017979	GPCR, family 3, conserved site	Conserved Site
A, B	IPR001256	GPCR, family 3, metabotropic glutamate receptor 1	Family
A, B	IPR028082	Periplasmic binding protein-like I	Homologous Superfamily
A, B	IPR000162	GPCR, family 3, metabotropic glutamate receptor	Family
A, B	IPR001828	Receptor, ligand binding region	Domain
A, B	IPR000337	GPCR, family 3	Family
A, B	IPR038550	GPCR, family 3, nine cysteines domain superfamily	Homologous Superfamily
A, B	IPR011500	GPCR, family 3, nine cysteines domain	Domain
A, B	IPR019588	Metabotropic glutamate receptor, Homer-binding domain	Domain

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.