Annotations: 5XSY

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Nrd1-Seb1_dom2	e5xsyA1	A: a/b three-layered sandwiches	X: CRISPR-associated protein Cse2	H: CRISPR-associated protein Cse2	T: CRISPR-associated protein Cse2	F: Nrd1-Seb1_dom2	ECOD (v294.1)
B	Nrd1-Seb1_dom2	e5xsyB1	A: a/b three-layered sandwiches	X: CRISPR-associated protein Cse2	H: CRISPR-associated protein Cse2	T: CRISPR-associated protein Cse2	F: Nrd1-Seb1_dom2	ECOD (v294.1)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00520	Ion transport protein (Ion_trans)	Ion transport protein	-	Family
B	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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Sodium channel protein	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 channel activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity	multicellular organismal process system process nervous system process biological regulation action potential transmission of nerve impulse cell communication neuronal action potential cellular process regulation of biological quality regulation of membrane potential membrane depolarization during action potential membrane depolarization	protein-containing complex sodium channel complex voltage-gated sodium channel complex plasma membrane protein complex membrane plasma membrane membrane protein complex cation channel complex transporter complex cell periphery cellular anatomical structure transmembrane transporter complex monoatomic ion channel complex
B	Voltage-gated sodium channel beta subunit 1	molecular function inhibitor activity sodium channel inhibitor activity channel regulator activity transporter inhibitor activity ion channel regulator activity ion channel inhibitor activity molecular function regulator activity sodium channel regulator activity transporter regulator activity channel inhibitor activity monoatomic cation transmembrane transporter activity voltage-gated sodium channel activity monoatomic ion channel activity sodium channel activity molecular function inhibitor activity sodium channel inhibitor activity channel regulator activity transporter inhibitor activity ion channel regulator activity ion channel inhibitor activity molecular function regulator activity sodium channel regulator activity transporter regulator activity channel inhibitor 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 channel activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity protein binding binding transmembrane transporter 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 regulation of biological process 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	protein-containing complex sodium channel complex voltage-gated sodium channel complex plasma membrane protein complex membrane plasma membrane membrane protein complex cation channel complex transporter complex cell periphery cellular anatomical structure transmembrane transporter complex monoatomic ion channel complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR005821	Ion transport domain	Domain
A	IPR058542	SCN5A-like, C-terminal IQ motif	Domain
A	IPR044564	Voltage-gated sodium channel alpha subunit, inactivation gate	Domain
A	IPR010526	Sodium ion transport-associated domain	Domain
A	IPR001696	Voltage gated sodium channel, alpha subunit	Family
A	IPR043203	Voltage-gated cation channel calcium and sodium	Family
A	IPR027359	Voltage-dependent channel domain superfamily	Homologous Superfamily
B	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B	IPR013106	Immunoglobulin V-set domain	Domain
B	IPR007110	Immunoglobulin-like domain	Domain
B	IPR027098	Sodium channel subunit beta-1/beta-3	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B	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, B	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Potassium, Sodium, & Proton Ion-Selective	Na_V1.4-β₁ complex

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.