2LT9

The solution structure of Ca2+ binding domain 2B of the third isoform of the Na+/Ca2+ exchanger

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2lt9a_	All beta proteins	Immunoglobulin-like beta-sandwich	CalX-like	CalX-beta domain	automated matches	mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	CalX-beta domain	8078927	4007549	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	CalX-like	8078928	3002060	SCOP2 (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	PF03160	e2lt9A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF03160	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.2030	Mainly Beta	Sandwich	Immunoglobulin-like	CalX-beta domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF03160	Calx-beta domain (Calx-beta)	Calx-beta domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Protein Slc8a3	monoatomic cation transmembrane transporter activity metal cation:monoatomic cation antiporter activity calcium:monoatomic cation antiporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity antiporter activity active monoatomic ion transmembrane transporter activity active transmembrane transporter activity calcium ion transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity calcium:sodium antiporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity monoatomic cation transmembrane transporter activity metal cation:monoatomic cation antiporter activity calcium:monoatomic cation antiporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity antiporter activity active monoatomic ion transmembrane transporter activity active transmembrane transporter activity calcium ion transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity calcium:sodium antiporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity calcium:monoatomic cation antiporter activity involved in regulation of postsynaptic cytosolic calcium ion concentration protein binding binding calmodulin binding cation binding ion binding metal ion binding small molecule binding monoatomic ion antiporter activity involved in regulation of postsynaptic membrane potential	cellular response to stimulus multicellular organismal process regulation of postsynaptic membrane potential system process regulation of cellular process response to stimulus signaling modulation of chemical synaptic transmission regulation of system process regulation of signal transduction chemical synaptic transmission, postsynaptic cell communication synaptic signaling modulation of excitatory postsynaptic potential cellular response to stimulus multicellular organismal process regulation of postsynaptic membrane potential system process regulation of cellular process response to stimulus signaling modulation of chemical synaptic transmission regulation of system process regulation of signal transduction chemical synaptic transmission, postsynaptic cell communication synaptic signaling modulation of excitatory postsynaptic potential regulation of multicellular organismal process signal transduction regulation of biological quality trans-synaptic signaling regulation of biological process regulation of signaling cell surface receptor signaling pathway nervous system process biological regulation cell-cell signaling chemical synaptic transmission regulation of nervous system process regulation of trans-synaptic signaling regulation of response to stimulus anterograde trans-synaptic signaling regulation of cell communication cellular process excitatory postsynaptic potential regulation of membrane potential behavior learning learning or memory cognition neuromuscular process skeletal muscle contraction muscle contraction muscle system process regulation of muscle system process striated muscle contraction multicellular organismal movement musculoskeletal movement regulation of striated muscle contraction regulation of muscle contraction regulation of skeletal muscle contraction response to decreased oxygen levels 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 memory inorganic ion homeostasis intracellular calcium ion homeostasis homeostatic process calcium ion homeostasis cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis mitochondrial calcium ion homeostasis transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization calcium ion transport metal ion transport inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization monoatomic ion transport monoatomic cation transport calcium ion transmembrane transport calcium ion export across plasma membrane export from cell export across plasma membrane sodium ion transport calcium ion transmembrane import into cytosol positive regulation of cytosolic calcium ion concentration calcium ion transport into cytosol developmental process cellular developmental process nervous system development multicellular organism development neurogenesis central nervous system development gliogenesis oligodendrocyte differentiation glial cell differentiation cell differentiation anatomical structure development system development mitochondrial transmembrane transport mitochondrial calcium ion transmembrane transport mitochondrial transport cellular component organization cell junction organization synapse organization cellular component organization or biogenesis cellular response to nitrogen compound response to organic substance response to organonitrogen compound response to endogenous stimulus response to organophosphorus cellular response to organic cyclic compound response to oxygen-containing compound response to nitrogen compound response to purine-containing compound response to cAMP cellular response to oxygen-containing compound cellular response to endogenous stimulus cellular response to organonitrogen compound cellular response to cAMP cellular response to organic substance response to organic cyclic compound sodium ion transmembrane transport import into cell import across plasma membrane inorganic cation import across plasma membrane calcium ion import across plasma membrane inorganic ion import across plasma membrane calcium ion import calcium ion import into cytosol regulation of catalytic activity negative regulation of biological process negative regulation of catalytic activity regulation of transferase activity negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of kinase activity negative regulation of transferase activity regulation of phosphate metabolic process phosphate-containing compound metabolic process negative regulation of protein modification process phosphorus metabolic process protein modification process negative regulation of protein metabolic process protein phosphorylation phosphorylation cellular metabolic process regulation of protein metabolic process negative regulation of metabolic process regulation of cellular metabolic process primary metabolic process regulation of molecular function regulation of kinase activity negative regulation of protein phosphorylation macromolecule modification regulation of protein serine/threonine kinase activity regulation of phosphorus metabolic process metabolic process macromolecule metabolic process regulation of metabolic process regulation of protein modification process regulation of protein phosphorylation negative regulation of phosphate metabolic process organic substance metabolic process negative regulation of protein serine/threonine kinase activity negative regulation of cellular process protein metabolic process negative regulation of macromolecule metabolic process organonitrogen compound metabolic process negative regulation of molecular function negative regulation of protein kinase activity regulation of protein kinase activity regulation of macromolecule metabolic process negative regulation of phosphorus metabolic process regulation of phosphorylation negative regulation of phosphorylation myelination axon ensheathment ensheathment of neurons hemopoiesis cell development hematopoietic progenitor cell differentiation positive regulation of cell communication positive regulation of biological process long-term synaptic potentiation positive regulation of cellular process regulation of synaptic plasticity positive regulation of synaptic transmission positive regulation of signaling	cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane somatodendritic compartment cell body perikaryon neuronal cell body cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane somatodendritic compartment cell body perikaryon neuronal cell body sarcolemma cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection neuromuscular junction neuron spine dendritic spine intracellular anatomical structure perinuclear region of cytoplasm cytoplasm membrane-bounded organelle mitochondrial membrane mitochondrion organelle outer membrane intracellular membrane-bounded organelle intracellular organelle organelle envelope bounding membrane of organelle organelle mitochondrial envelope mitochondrial outer membrane outer membrane organelle membrane axon sarcoplasm polymeric cytoskeletal fiber cytoskeleton intracellular non-membrane-bounded organelle supramolecular fiber microtubule supramolecular polymer supramolecular complex microtubule cytoskeleton non-membrane-bounded organelle anchoring junction organelle subcompartment endomembrane system endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum endoplasmic reticulum membrane postsynaptic density neuron to neuron synapse postsynaptic specialization asymmetric synapse axon terminus presynapse distal axon neuron projection terminus

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR032452	Sodium/calcium exchanger domain, C-terminal extension	Domain
A	IPR044880	NCX, central ion-binding domain superfamily	Homologous Superfamily
A	IPR003644	Na-Ca exchanger/integrin-beta4	Domain
A	IPR004837	Sodium/calcium exchanger membrane region	Domain
A	IPR004836	Sodium/calcium exchanger protein	Family
A	IPR038081	CalX-like domain superfamily	Homologous Superfamily

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 R01GM133198.