Annotations: 7DSW

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth B]	Na_H_Exchanger	e7dswB1	A: alpha complex topology	X: Cation-proton antiporter	H: Cation-proton antiporter (CPA) (From Topology)	T: Cation-proton antiporter (CPA)	F: Na_H_Exchanger	ECOD (1.6)
B [auth A]	Na_H_Exchanger	e7dswA1	A: alpha complex topology	X: Cation-proton antiporter	H: Cation-proton antiporter (CPA) (From Topology)	T: Cation-proton antiporter (CPA)	F: Na_H_Exchanger	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], B [auth A]	PF00999	Sodium/hydrogen exchanger family (Na_H_Exchanger)	Sodium/hydrogen exchanger family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B], B [auth A]	Sodium/hydrogen exchanger 1	ion binding binding small molecule binding phospholipid binding lipid binding protein-macromolecule adaptor activity molecular adaptor activity monoatomic cation transmembrane transporter activity metal cation:monoatomic cation antiporter activity proton transmembrane transporter activity sodium:proton antiporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity antiporter activity ion binding binding small molecule binding phospholipid binding lipid binding protein-macromolecule adaptor activity molecular adaptor activity monoatomic cation transmembrane transporter activity metal cation:monoatomic cation antiporter activity proton transmembrane transporter activity sodium:proton antiporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity antiporter activity active monoatomic ion transmembrane transporter activity metal cation:proton antiporter activity active transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity protein binding calmodulin binding identical protein binding protein phosphatase binding phosphatase binding protein phosphatase 2B binding enzyme binding phosphatidylinositol-4,5-bisphosphate binding anion binding phosphatidylinositol bisphosphate binding phosphatidylinositol phosphate binding phosphatidylinositol binding sodium:proton antiporter activity involved in regulation of cardiac muscle cell membrane potential calcium-dependent protein binding potassium ion transmembrane transporter activity potassium:proton antiporter activity solute:potassium antiporter activity	cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular process cellular component organization or biogenesis transport proton transmembrane transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular process cellular component organization or biogenesis transport proton transmembrane transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization monoatomic ion transport monoatomic cation transport regulation of cellular process regulation of cellular component organization cell-substrate junction assembly cell adhesion cell junction assembly regulation of cell-substrate junction organization focal adhesion assembly regulation of biological process regulation of cell-substrate adhesion regulation of cell adhesion biological regulation cell-substrate adhesion regulation of cellular component biogenesis regulation of cell junction assembly cell junction organization cell-matrix adhesion regulation of cell-matrix adhesion cell-substrate junction organization regulation of focal adhesion assembly regulation of cell-substrate junction assembly membrane organization mitochondrial membrane organization organelle organization positive regulation of mitochondrial membrane permeability regulation of membrane permeability positive regulation of membrane permeability regulation of biological quality regulation of mitochondrial membrane permeability mitochondrial transport mitochondrion organization potassium ion transmembrane transport metal ion transport potassium ion transport heart process multicellular organismal process system process regulation of heart contraction regulation of system process circulatory system process regulation of blood circulation positive regulation of the force of heart contraction regulation of multicellular organismal process heart contraction regulation of the force of heart contraction blood circulation 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 positive regulation of programmed cell death regulation of apoptotic process positive regulation of biological process regulation of programmed cell death cell death positive regulation of apoptotic process apoptotic process programmed cell death positive regulation of cellular process sodium ion export across plasma membrane export from cell sodium ion transmembrane transport export across plasma membrane sodium ion transport developmental process heart development cellular developmental process cardiac muscle tissue development cardiac muscle cell differentiation animal organ development muscle cell differentiation tissue development cardiocyte differentiation striated muscle tissue development circulatory system development muscle structure development multicellular organism development cell differentiation anatomical structure development striated muscle cell differentiation muscle tissue development system development cell migration cell motility regulation of calcium ion transmembrane transporter activity regulation of localization regulation of calcium ion transport positive regulation of cation transmembrane transport positive regulation of calcium ion transport regulation of sodium ion transport regulation of sodium ion transmembrane transport calcium ion transport positive regulation of sodium ion transport positive regulation of calcium:sodium antiporter activity positive regulation of monoatomic ion transport positive regulation of monoatomic ion transmembrane transport regulation of monoatomic ion transport regulation of molecular function regulation of calcium:sodium antiporter activity regulation of transmembrane transport positive regulation of sodium ion transmembrane transporter activity regulation of transmembrane transporter activity regulation of monoatomic ion transmembrane transport regulation of transporter activity regulation of calcium ion transmembrane transport regulation of sodium ion transmembrane transporter activity positive regulation of molecular function positive regulation of calcium ion transmembrane transporter activity positive regulation of calcium ion transmembrane transport positive regulation of transmembrane transport positive regulation of sodium ion transmembrane transport regulation of metal ion transport regulation of monoatomic ion transmembrane transporter activity regulation of transport positive regulation of transport positive regulation of transporter activity positive regulation of ion transmembrane transporter activity regulation of monoatomic cation transmembrane transport calcium ion transmembrane transport cellular response to antibiotic response to antibiotic muscle hypertrophy regulation of muscle adaptation positive regulation of cardiac muscle hypertrophy striated muscle hypertrophy regulation of muscle system process muscle system process regulation of cardiac muscle hypertrophy regulation of muscle hypertrophy muscle adaptation regulation of response to stimulus positive regulation of muscle hypertrophy cardiac muscle hypertrophy positive regulation of multicellular organismal process homeostatic process regulation of intracellular pH cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis regulation of pH monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis regulation of cellular pH intracellular monoatomic ion homeostasis response to electrical stimulus cellular response to electrical stimulus cellular response to abiotic stimulus cellular response to environmental stimulus response to pH response to acidic pH positive regulation of macromolecule biosynthetic process regulation of primary metabolic process nucleobase-containing compound metabolic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II organic substance biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of transcription by RNA polymerase II positive regulation of nucleobase-containing compound metabolic process cellular metabolic process primary metabolic process regulation of cellular metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process positive regulation of DNA-templated transcription cellular biosynthetic process RNA metabolic process positive regulation of cellular metabolic process RNA biosynthetic process nucleic acid biosynthetic process organic substance metabolic process positive regulation of biosynthetic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process positive regulation of RNA biosynthetic process positive regulation of cellular biosynthetic process signaling cardiac muscle contraction intracellular signal transduction cell communication striated muscle contraction intracellular signaling cassette signal transduction regulation of cardiac muscle contraction by calcium ion signaling regulation of cardiac muscle contraction muscle contraction regulation of striated muscle contraction calcium-mediated signaling regulation of muscle contraction sodium ion homeostasis inorganic ion homeostasis intracellular sodium ion homeostasis regulation of growth growth positive regulation of cell growth regulation of cell growth cell growth positive regulation of growth regulation of cytoskeleton organization regulation of actin filament-based process regulation of actin filament bundle assembly actin filament bundle organization actin filament-based process stress fiber assembly regulation of actin filament organization actin cytoskeleton organization actomyosin structure organization actin filament organization regulation of organelle organization regulation of stress fiber assembly contractile actin filament bundle assembly regulation of actomyosin structure organization actin filament bundle assembly regulation of actin cytoskeleton organization regulation of supramolecular fiber organization supramolecular fiber organization cytoskeleton organization negative regulation of programmed cell death negative regulation of biological process negative regulation of apoptotic process negative regulation of cellular process cellular response to pH cellular response to acidic pH calcineurin-NFAT signaling cascade positive regulation of cell communication positive regulation of signal transduction regulation of signal transduction positive regulation of response to stimulus regulation of intracellular signal transduction regulation of calcineurin-mediated signaling positive regulation of calcineurin-NFAT signaling cascade regulation of calcium-mediated signaling positive regulation of calcium-mediated signaling regulation of calcineurin-NFAT signaling cascade regulation of signaling positive regulation of calcineurin-mediated signaling positive regulation of intracellular signal transduction regulation of cell communication calcineurin-mediated signaling positive regulation of signaling regulation of the force of heart contraction by cardiac conduction cardiac conduction response to epinephrine cellular response to epinephrine stimulus regulation of action potential positive regulation of action potential action potential regulation of membrane potential import into cell import across plasma membrane sodium ion import across plasma membrane inorganic cation import across plasma membrane inorganic ion import across plasma membrane regulation of cardiac muscle cell membrane potential response to mechanical stimulus response to external stimulus cellular response to mechanical stimulus cellular response to external stimulus maintenance of cell polarity establishment or maintenance of cell polarity cardiac muscle cell contraction actin filament-based movement actin-mediated cell contraction cellular response to cold response to cold response to temperature stimulus cellular response to nitrogen compound response to organic substance response to endogenous stimulus response to organonitrogen compound response to peptide hormone response to oxygen-containing compound cellular response to peptide hormone stimulus response to nitrogen compound cellular response to oxygen-containing compound cellular response to endogenous stimulus cellular response to organonitrogen compound response to hormone response to insulin cellular response to organic substance cellular response to insulin stimulus cellular response to hormone stimulus stem cell differentiation response to muscle stretch	cell projection cell leading edge cellular anatomical entity plasma membrane bounded cell projection lamellipodium cell periphery sarcolemma plasma membrane membrane T-tubule extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle cell projection cell leading edge cellular anatomical entity plasma membrane bounded cell projection lamellipodium cell periphery sarcolemma plasma membrane membrane T-tubule extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle basal part of cell basal plasma membrane plasma membrane region basolateral plasma membrane intracellular anatomical structure cytoplasm perinuclear region of cytoplasm cell-cell junction intercalated disc anchoring junction cell junction cell-cell contact zone intracellular organelle mitochondrion intracellular membrane-bounded organelle focal adhesion cell-substrate junction apical part of cell apical plasma membrane cell surface ATPase dependent transmembrane transport complex cation-transporting ATPase complex protein-containing complex transmembrane transporter complex membrane protein complex transporter complex membrane microdomain membrane raft nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth A]	IPR001970	Sodium/hydrogen exchanger 1-like	Family
A [auth B], B [auth A]	IPR006153	Cation/H+ exchanger	Domain
A [auth B], B [auth A]	IPR018422	Cation/H+ exchanger, CPA1 family	Family
A [auth B], B [auth A]	IPR032103	Sodium/hydrogen exchanger, regulatory region	Domain
A [auth B], B [auth A]	IPR004709	Na+/H+ exchanger	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth B], B [auth A]	Pharos: P19634	Lichtenstein-Knorr syndrome Barrett esophagus hypertrophic cardiomyopathy Diabetes Mellitus, Experimental congestive heart failure pancreatic intraductal papillary-mucinous neoplasm heart failure ischemia reperfusion injury pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia neurodegenerative disease pancreatic intraductal papillary-mucinous carcinoma

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A [auth B], B [auth A]	OPM	Transmembrane	Alpha-helical polytopic	Monovalent cation-proton antiporter	Sodium-proton antiporter 1

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A [auth B], 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 B], B [auth A]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Antiporters	Na⁺/H⁺ exchanger NHE1-CHP1 complex, under pH 7.5

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.