7CFT

Cryo-EM strucutre of human acid-sensing ion channel 1a in complex with snake toxin Mambalgin1 at pH 8.0

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	ASICs transmembrane helices-like	8106441	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	8106442	3002854	SCOP2B (2022-06-29)
B	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	8106442	3002854	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)
C	SCOP2B Superfamily	Proton-activated chloride channel, extracellular domain-like	8106425	3002853	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	ASC	e7cftA1	A: beta sandwiches	X: Amiloride-sensitive cation channel 2 (From Topology)	H: Amiloride-sensitive cation channel 2 (From Topology)	T: Amiloride-sensitive cation channel 2	F: ASC	ECOD (1.6)
B	ASC	e7cftB1	A: beta sandwiches	X: Amiloride-sensitive cation channel 2 (From Topology)	H: Amiloride-sensitive cation channel 2 (From Topology)	T: Amiloride-sensitive cation channel 2	F: ASC	ECOD (1.6)
C	ASC	e7cftC1	A: beta sandwiches	X: Amiloride-sensitive cation channel 2 (From Topology)	H: Amiloride-sensitive cation channel 2 (From Topology)	T: Amiloride-sensitive cation channel 2	F: ASC	ECOD (1.6)
D	Toxin_TOLIP	e7cftD1	A: few secondary structure elements	X: Snake toxin-like (From Topology)	H: Snake toxin-like (From Topology)	T: Snake toxin-like	F: Toxin_TOLIP	ECOD (1.6)
E	Toxin_TOLIP	e7cftE1	A: few secondary structure elements	X: Snake toxin-like (From Topology)	H: Snake toxin-like (From Topology)	T: Snake toxin-like	F: Toxin_TOLIP	ECOD (1.6)
F	Toxin_TOLIP	e7cftF1	A: few secondary structure elements	X: Snake toxin-like (From Topology)	H: Snake toxin-like (From Topology)	T: Snake toxin-like	F: Toxin_TOLIP	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
D, E, F	PF21947	Snake toxin cobra-type (Toxin_cobra-type)	Snake toxin cobra-type	-	Family

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 inorganic molecular entity transmembrane transporter activity channel activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter 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 inorganic molecular entity transmembrane transporter activity channel activity inorganic cation transmembrane transporter 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 inorganic ion transmembrane transport metal ion transport inorganic cation transmembrane transport transmembrane transport monoatomic cation 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 protein-containing complex organization protein trimerization protein homotrimerization protein complex oligomerization protein-containing complex assembly protein homooligomerization 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 glutamatergic synapse membrane-bounded organelle intracellular organelle intracellular anatomical structure Golgi apparatus cytoplasm intracellular membrane-bounded organelle endomembrane system
D, E, F	Mambalgin-1	channel regulator activity ion channel regulator activity molecular function regulator activity transporter regulator activity toxin activity	-	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, E, F	IPR045860	Snake toxin-like superfamily	Homologous Superfamily
D, E, F	IPR054131	Snake toxin cobra-type	Family

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

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D, E A, B, C, D, E, F	OPM	Transmembrane	Alpha-helical polytopic	ENaC/P2X	Acid-sensing ion channels

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E A, B, C, D, E, F	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Other Ion Channels	ASIC1a Acid-Sensing Ion Channel, pH 8

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.