Annotations: 9E4I

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	Acid-sensing ion channel 1	monoatomic cation transmembrane transporter activity gated channel activity monoatomic ion channel activity ligand-gated sodium channel activity sodium channel activity sodium ion transmembrane transporter activity ligand-gated channel activity ligand-gated monoatomic ion channel activity monoatomic cation channel activity passive transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity ligand-gated monoatomic cation channel activity monoatomic cation transmembrane transporter activity gated channel activity monoatomic ion channel activity ligand-gated sodium channel activity sodium channel activity sodium ion transmembrane transporter activity ligand-gated channel activity ligand-gated monoatomic ion channel activity monoatomic cation channel activity passive transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity ligand-gated monoatomic cation channel activity transmembrane transporter activity pH-gated monoatomic ion channel activity monoatomic ion-gated channel activity	multicellular organismal process system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of taste sensory perception of sour taste trans-synaptic signaling regulation of biological process cellular localization neurotransmitter secretion transport signaling secretion multicellular organismal process system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of taste sensory perception of sour taste trans-synaptic signaling regulation of biological process cellular localization neurotransmitter secretion transport signaling secretion biological regulation cell-cell signaling export from cell neurotransmitter transport establishment of localization cell communication chemical synaptic transmission localization signal release from synapse synaptic signaling secretion by cell signal release anterograde trans-synaptic signaling establishment of localization in cell cellular process behavior learning or memory cognition memory cellular response to stimulus response to stimulus response to pH cellular response to pH response to abiotic stimulus cellular response to abiotic stimulus cellular response to environmental stimulus monoatomic ion transmembrane transport sodium ion transmembrane transport metal ion transport monoatomic cation transmembrane transport transmembrane transport monoatomic ion transport monoatomic cation transport sodium ion transport calcium ion transport calcium ion transmembrane transport regulation of cellular component organization regulation of cellular process cellular component organization cellular component biogenesis multicellular organism development cellular component assembly regulation of postsynapse assembly cell junction assembly anatomical structure development regulation of synapse structure or activity synapse organization cellular component organization or biogenesis regulation of synapse assembly regulation of biological quality system development developmental process postsynapse organization postsynapse assembly regulation of postsynapse organization nervous system development regulation of cellular component biogenesis regulation of cell junction assembly regulation of synapse organization cell junction organization synapse assembly regulation of membrane potential regulation of localization modulation of chemical synaptic transmission negative regulation of biological process negative regulation of transport negative regulation of neurotransmitter transport regulation of secretion by cell negative regulation of secretion negative regulation of cellular process negative regulation of secretion by cell regulation of signaling negative regulation of neurotransmitter secretion regulation of transport regulation of neurotransmitter transport regulation of secretion regulation of trans-synaptic signaling regulation of neurotransmitter secretion regulation of cell communication learning associative learning response to amine response to chemical response to nitrogen compound response to amphetamine behavioral defense response fear response behavioral fear response defense response response to stress multicellular organismal response to stress response to acidic pH	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 cell surface presynapse somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection glutamatergic synapse membrane-bounded organelle intracellular organelle intracellular anatomical structure Golgi apparatus cytoplasm intracellular membrane-bounded organelle endomembrane system
D, F, H	Kunitz-type neurotoxin MitTx-alpha	enzyme regulator activity molecular function inhibitor activity peptidase regulator activity serine-type endopeptidase inhibitor activity molecular function regulator activity enzyme inhibitor activity peptidase inhibitor activity endopeptidase regulator activity endopeptidase inhibitor activity channel regulator activity ion channel regulator activity transporter regulator activity toxin activity	-	cellular anatomical structure extracellular region
E, G, I	Basic phospholipase A2 homolog MitTx-beta	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding channel regulator activity ion channel regulator activity molecular function regulator activity transporter regulator activity phospholipase A2 activity calcium-dependent phospholipase A2 activity hydrolase activity, acting on ester bonds carboxylic ester hydrolase activity cation binding ion binding binding calcium ion binding metal ion binding small molecule binding channel regulator activity ion channel regulator activity molecular function regulator activity transporter regulator activity phospholipase A2 activity calcium-dependent phospholipase A2 activity hydrolase activity, acting on ester bonds carboxylic ester hydrolase activity hydrolase activity catalytic activity phospholipase activity lipase activity toxin activity phospholipid binding lipid binding	organic anion transport carboxylic acid transport secretion transport arachidonate transport lipid localization lipid transport establishment of localization organic acid transport localization arachidonate secretion monocarboxylic acid transport fatty acid transport icosanoid transport macromolecule localization organic anion transport carboxylic acid transport secretion transport arachidonate transport lipid localization lipid transport establishment of localization organic acid transport localization arachidonate secretion monocarboxylic acid transport fatty acid transport icosanoid transport macromolecule localization icosanoid secretion long-chain fatty acid transport lipid catabolic process catabolic process metabolic process cellular process primary metabolic process lipid metabolic process phospholipid metabolic process organophosphate metabolic process phosphate-containing compound metabolic process phosphorus metabolic process	cellular anatomical structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR020903	Epithelial sodium channel, conserved site	Conserved Site
A, B, C	IPR004724	Epithelial sodium channel, chordates	Family
A, B, C	IPR001873	Epithelial sodium channel	Family
D, F, H	IPR002223	Pancreatic trypsin inhibitor Kunitz domain	Domain
D, F, H	IPR036880	Pancreatic trypsin inhibitor Kunitz domain superfamily	Homologous Superfamily
E, G, I	IPR033112	Phospholipase A2, aspartic acid active site	Active Site
E, G, I	IPR016090	Phospholipase A2-like, central domain	Domain
E, G, I	IPR001211	Phospholipase A2	Family
E, G, I	IPR036444	Phospholipase A2 domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C	Pharos: P78348	brain ischemia Inflammation hypertensive disorder colorectal cancer medulloblastoma oligodendroglioma brain injury pilocytic astrocytoma

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
D, F, H	PCA	Parent Component: GLN RESID: AA0031 PSI-MOD : 2-pyrrolidone-5-carboxylic acid (Gln) MOD:00040 , 2-pyrrolidone-5-carboxylic acid (Glu) MOD:00420

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.