Annotations: 9E4J

Human ASIC1a at pH 6.5 in complex with MitTx

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Protein Modification Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2B Superfamily	BPTI-like	8070125	3000628	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	BPTI-like	8070125	3000628	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	BPTI-like	8070125	3000628	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Phospholipase A2, PLA2	8062779	3001690	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Phospholipase A2, PLA2	8062779	3001690	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	Phospholipase A2, PLA2	8062779	3001690	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	ASICs transmembrane helices-like	8106442	3002854	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Proton-activated chloride channel, extracellular domain-like	8106425	3002853	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	ASICs transmembrane helices-like	8106441	3002854	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Proton-activated chloride channel, extracellular domain-like	8106425	3002853	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	ASICs transmembrane helices-like	8106441	3002854	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	ASICs transmembrane helices-like	8106442	3002854	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Proton-activated chloride channel, extracellular domain-like	8106425	3002853	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	ASICs transmembrane helices-like	8106442	3002854	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	ASICs transmembrane helices-like	8106441	3002854	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)
D	WD40	e9e4jD1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)
F	WD40	e9e4jF1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)
H	WD40	e9e4jH1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)
E	WD40	e9e4jE1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)
G	WD40	e9e4jG1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)
I	WD40	e9e4jI1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
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 activity A2-type glycerophospholipase activity hydrolase activity, acting on ester bonds glycerophospholipase 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 activity A2-type glycerophospholipase activity hydrolase activity, acting on ester bonds glycerophospholipase activity carboxylic ester hydrolase activity hydrolase activity catalytic activity lipase activity toxin activity phospholipid binding lipid binding	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 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 phosphorus metabolic process	cellular anatomical structure extracellular region
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 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 multicellular organismal process 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 regulation of biological process postsynapse organization postsynapse assembly biological regulation regulation of postsynapse organization nervous system development regulation of cellular component biogenesis regulation of cell junction assembly regulation of synapse organization cell junction organization cellular process synapse assembly system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of taste sensory perception of sour taste localization transport monoatomic ion transport monoatomic cation transport establishment of localization sodium ion transport metal ion transport calcium ion transport 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 monoatomic cation transmembrane transport transmembrane transport	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 somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection glutamatergic synapse

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
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
A, B, C	IPR001873	Epithelial sodium channel	Family
A, B, C	IPR020903	Epithelial sodium channel, conserved site	Conserved Site
A, B, C	IPR004724	Epithelial sodium channel, chordates	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C	: 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 : AA0031 : 2-pyrrolidone-5-carboxylic acid (Gln) MOD:00040 , 2-pyrrolidone-5-carboxylic acid (Glu) MOD:00420

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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.