Annotations: 6J8E

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth C]	V-set_9	e6j8eC1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_9	ECOD (1.6)
B [auth A]	Ion_trans	e6j8eA3	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: Ion_trans	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth C]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth C]	PF07686	Immunoglobulin V-set domain (V-set)	Immunoglobulin V-set domain	This domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.	Domain
B [auth A]	PF00520	Ion transport protein (Ion_trans)	Ion transport protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth C]	Sodium channel subunit beta-2	monoatomic cation transmembrane transporter activity gated channel activity voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarization monoatomic ion channel activity potassium ion transmembrane transporter activity voltage-gated channel activity voltage-gated monoatomic ion channel activity potassium channel activity voltage-gated monoatomic cation channel activity voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization monoatomic cation channel activity passive transmembrane transporter activity voltage-gated potassium channel activity inorganic molecular entity transmembrane transporter activity channel activity monoatomic cation transmembrane transporter activity gated channel activity voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarization monoatomic ion channel activity potassium ion transmembrane transporter activity voltage-gated channel activity voltage-gated monoatomic ion channel activity potassium channel activity voltage-gated monoatomic cation channel activity voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization monoatomic cation channel activity passive transmembrane transporter activity voltage-gated potassium channel 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 transmembrane transporter activity channel regulator activity ion channel regulator activity molecular function regulator activity sodium channel regulator activity transporter regulator activity voltage-gated sodium channel activity involved in cardiac muscle cell action potential voltage-gated sodium channel activity sodium channel activity sodium ion transmembrane transporter activity	membrane depolarization during action potential membrane depolarization biological regulation membrane depolarization during cardiac muscle cell action potential action potential regulation of biological quality cardiac muscle cell action potential regulation of membrane potential heart process cardiac muscle cell contraction multicellular organismal process system process cardiac muscle cell action potential involved in contraction actin filament-based movement membrane depolarization during action potential membrane depolarization biological regulation membrane depolarization during cardiac muscle cell action potential action potential regulation of biological quality cardiac muscle cell action potential regulation of membrane potential heart process cardiac muscle cell contraction multicellular organismal process system process cardiac muscle cell action potential involved in contraction actin filament-based movement cardiac muscle contraction muscle contraction muscle system process striated muscle contraction circulatory system process actin filament-based process cellular process actin-mediated cell contraction heart contraction blood circulation regulation of biological process regulation of cellular process regulation of membrane depolarization regulation of atrial cardiac muscle cell membrane depolarization biosynthetic process metabolic process macromolecule metabolic process gene expression macromolecule biosynthetic process developmental process multicellular organism development anatomical structure development nervous system development system development trans-synaptic signaling synaptic signaling signaling anterograde trans-synaptic signaling cell-cell signaling chemical synaptic transmission cell communication regulation of localization transport regulation of transport regulation of monoatomic ion transport positive regulation of biological process regulation of sodium ion transport establishment of localization metal ion transport positive regulation of sodium ion transport localization positive regulation of transport positive regulation of monoatomic ion transport monoatomic ion transport monoatomic cation transport regulation of metal ion transport sodium ion transport response to stimulus response to stress response to heat response to abiotic stimulus response to temperature stimulus response to chemical response to pyrethroid response to insecticide response to toxic substance regulation of heart contraction regulation of system process regulation of blood circulation cardiac conduction regulation of multicellular organismal process regulation of heart rate by cardiac conduction regulation of heart rate	cell periphery cellular anatomical structure sarcolemma plasma membrane membrane T-tubule axon cell projection main axon neuron projection node of Ranvier plasma membrane bounded cell projection axon initial segment protein-containing complex cell periphery cellular anatomical structure sarcolemma plasma membrane membrane T-tubule axon cell projection main axon neuron projection node of Ranvier plasma membrane bounded cell projection axon initial segment protein-containing complex sodium channel complex voltage-gated sodium channel complex plasma membrane protein complex membrane protein complex cation channel complex transporter complex transmembrane transporter complex monoatomic ion channel complex synapse cell junction
B [auth A]	Sodium channel protein type 2 subunit alpha	monoatomic cation transmembrane transporter activity voltage-gated sodium channel activity monoatomic ion channel activity sodium channel activity sodium ion transmembrane transporter 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 transmembrane transporter activity monoatomic cation transmembrane transporter activity voltage-gated sodium channel activity monoatomic ion channel activity sodium channel activity sodium ion transmembrane transporter 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 transmembrane transporter activity protein binding binding calmodulin binding	heart process cardiac muscle cell contraction multicellular organismal process system process cardiac muscle cell action potential involved in contraction biological regulation action potential actin filament-based movement cardiac muscle contraction muscle contraction muscle system process striated muscle contraction circulatory system process actin filament-based process heart process cardiac muscle cell contraction multicellular organismal process system process cardiac muscle cell action potential involved in contraction biological regulation action potential actin filament-based movement cardiac muscle contraction muscle contraction muscle system process striated muscle contraction circulatory system process actin filament-based process cellular process regulation of biological quality actin-mediated cell contraction heart contraction cardiac muscle cell action potential blood circulation regulation of membrane potential response to decreased oxygen levels cellular response to stimulus response to stimulus cellular response to oxygen levels cellular response to hypoxia cellular response to decreased oxygen levels cellular response to chemical stimulus cellular response to stress response to hypoxia response to stress response to chemical response to oxygen levels response to abiotic stimulus regulation of cellular process signaling cellular response to chemical stress intracellular signal transduction cellular response to environmental stimulus cell communication signal transduction intrinsic apoptotic signaling pathway response to osmotic stress regulation of biological process cellular response to osmotic stress cell death apoptotic signaling pathway intrinsic apoptotic signaling pathway in response to osmotic stress cellular response to abiotic stimulus apoptotic process programmed cell death behavior learning or memory nervous system process cognition memory transport monoatomic ion transmembrane transport sodium ion transmembrane transport inorganic ion transmembrane transport establishment of localization metal ion transport inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization monoatomic ion transport monoatomic cation transport sodium ion transport transmission of nerve impulse neuronal action potential determination of adult lifespan neuron apoptotic process developmental process multicellular organism development anatomical structure development nervous system development system development head development forebrain development animal organ development brain development dentate gyrus development pallium development central nervous system development telencephalon development hippocampus development limbic system development nerve development myelination axon ensheathment ensheathment of neurons	cell periphery cellular anatomical structure sarcolemma plasma membrane membrane T-tubule axon cell projection paranode region of axon main axon neuron projection plasma membrane bounded cell projection node of Ranvier presynapse cell periphery cellular anatomical structure sarcolemma plasma membrane membrane T-tubule axon cell projection paranode region of axon main axon neuron projection plasma membrane bounded cell projection node of Ranvier presynapse synapse cell junction presynaptic membrane plasma membrane region synaptic membrane glutamatergic synapse protein-containing complex sodium channel complex voltage-gated sodium channel complex plasma membrane protein complex membrane protein complex cation channel complex transporter complex transmembrane transporter complex monoatomic ion channel complex cell-cell junction intercalated disc anchoring junction cell-cell contact zone
C [auth D]	Mu-conotoxin KIIIA	channel regulator activity ion channel regulator activity molecular function regulator activity sodium channel regulator activity transporter regulator activity toxin activity	-	cellular anatomical structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth C]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A [auth C]	IPR000920	Myelin P0 protein-related	Family
A [auth C]	IPR013106	Immunoglobulin V-set domain	Domain
A [auth C]	IPR003599	Immunoglobulin domain subtype	Domain
A [auth C]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A [auth C]	IPR007110	Immunoglobulin-like domain	Domain
B [auth A]	IPR024583	Voltage-gated Na+ ion channel, cytoplasmic domain	Domain
B [auth A]	IPR001696	Voltage gated sodium channel, alpha subunit	Family
B [auth A]	IPR000048	IQ motif, EF-hand binding site	Binding Site
B [auth A]	IPR010526	Sodium ion transport-associated domain	Domain
B [auth A]	IPR005821	Ion transport domain	Domain
B [auth A]	IPR044564	Voltage-gated sodium channel alpha subunit, inactivation gate	Domain
B [auth A]	IPR043203	Voltage-gated cation channel calcium and sodium	Family
B [auth A]	IPR027359	Voltage-dependent channel domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth C]	Pharos: O60939	Brugada syndrome familial atrial fibrillation atrial fibrillation, familial, 14 lung adenocarcinoma pituitary cancer astrocytic tumor glioblastoma lung carcinoma medulloblastoma Pick disease primitive neuroectodermal tumor atrial fibrillation atypical teratoid rhabdoid tumor Epileptic encephalopathy large cell medulloblastoma Brugada syndrome familial atrial fibrillation atrial fibrillation, familial, 14 lung adenocarcinoma pituitary cancer astrocytic tumor glioblastoma lung carcinoma medulloblastoma Pick disease primitive neuroectodermal tumor atrial fibrillation atypical teratoid rhabdoid tumor Epileptic encephalopathy large cell medulloblastoma malignant ependymoma non-small cell lung carcinoma pilocytic astrocytoma subependymal giant cell astrocytoma atrial fibrillation, familial, 1 breast cancer malignant glioma oligodendroglioma
B [auth A]	Pharos: Q99250	epilepsy developmental and epileptic encephalopathy, 11 West syndrome seizures, benign familial infantile, 3 seizures, benign familial neonatal, 3 Seizures, Febrile generalized epilepsy with febrile seizures plus medulloblastoma developmental and epileptic encephalopathy, 6 oligodendroglioma epilepsy with generalized tonic-clonic seizures Pediculus humanus capitis infestation tinea pedis premature ejaculation urethritis epilepsy developmental and epileptic encephalopathy, 11 West syndrome seizures, benign familial infantile, 3 seizures, benign familial neonatal, 3 Seizures, Febrile generalized epilepsy with febrile seizures plus medulloblastoma developmental and epileptic encephalopathy, 6 oligodendroglioma epilepsy with generalized tonic-clonic seizures Pediculus humanus capitis infestation tinea pedis premature ejaculation urethritis glioblastoma primitive neuroectodermal tumor psoriasis attention deficit hyperactivity disorder, inattentive type autism spectrum disorder scabies benign familial neonatal epilepsy breast cancer malignant glioma developmental and epileptic encephalopathy Sjogren syndrome Dravet syndrome neuralgia status epilepticus osteosarcoma tinea corporis pilocytic astrocytoma hemorrhoid large cell medulloblastoma astrocytic tumor Pthirus pubis infestation atypical teratoid rhabdoid tumor lung cancer scrapie bipolar disorder malaria malignant mesothelioma subependymal giant cell astrocytoma partial epilepsy postherpetic neuralgia intellectual disability Lennox-Gastaut syndrome atrial fibrillation benign familial infantile epilepsy lung carcinoma malignant ependymoma

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A [auth C], B [auth A]	OPM	Transmembrane	Alpha-helical polytopic	Ion channel (VIC) superfamily	Voltage-gated calcium and sodium channels

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A [auth C], B [auth A]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A [auth C], B [auth A]	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A [auth C], B [auth A]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Potassium, Sodium, & Proton Ion-Selective	Na_V1.2-β2 complex with bound μ-conotoxin KIIIA

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.