5JHO

Crystal structure of the regulatory domain of the sodium driven chloride bicarbonate exchanger.

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

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Phoshotransferase/anion transport protein	8070828	3000490	SCOP2B (2022-06-29)
B	SCOP2 Family	Anion transport protein, cytoplasmic domain	8070827	4003612	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Phoshotransferase/anion transport protein	8070828	3000490	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	Band_3_cyto	e5jhoA1	A: a+b three layers	X: Phoshotransferase/anion transport protein (From Topology)	H: Phoshotransferase/anion transport protein (From Topology)	T: Phoshotransferase/anion transport protein	F: Band_3_cyto	ECOD (1.6)
B	Band_3_cyto	e5jhoB1	A: a+b three layers	X: Phoshotransferase/anion transport protein (From Topology)	H: Phoshotransferase/anion transport protein (From Topology)	T: Phoshotransferase/anion transport protein	F: Band_3_cyto	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF07565	Band 3 cytoplasmic domain (Band_3_cyto)	Band 3 cytoplasmic domain	This family contains the cytoplasmic domain of the Band 3 anion exchange proteins that exchange Cl-/HCO3-. Band 3 constitutes the most abundant polypeptide in the red blood cell membrane, comprising 25% of the total membrane protein. The cytoplasmic ...	This family contains the cytoplasmic domain of the Band 3 anion exchange proteins that exchange Cl-/HCO3-. Band 3 constitutes the most abundant polypeptide in the red blood cell membrane, comprising 25% of the total membrane protein. The cytoplasmic domain of band 3 functions primarily as an anchoring site for other membrane-associated proteins. Included among the protein ligands of cdb3 are ankyrin, protein 4.2, protein 4.1, glyceraldehyde-3-phosphate dehydrogenase (GAPDH), phosphofructokinase, aldolase, hemoglobin, hemichromes, and the protein tyrosine kinase (p72syk). [1]	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Electroneutral sodium bicarbonate exchanger 1	monoatomic cation transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity sodium ion transmembrane transporter activity metal ion transmembrane transporter activity transmembrane transporter activity bicarbonate transmembrane transporter activity organic anion transmembrane transporter activity solute:sodium symporter activity solute:monoatomic cation symporter activity secondary active transmembrane transporter activity active monoatomic ion transmembrane transporter activity monoatomic cation transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity sodium ion transmembrane transporter activity metal ion transmembrane transporter activity transmembrane transporter activity bicarbonate transmembrane transporter activity organic anion transmembrane transporter activity solute:sodium symporter activity solute:monoatomic cation symporter activity secondary active transmembrane transporter activity active monoatomic ion transmembrane transporter activity monoatomic cation:bicarbonate symporter activity active transmembrane transporter activity symporter activity sodium:bicarbonate symporter activity antiporter activity inorganic anion transmembrane transporter activity solute:inorganic anion antiporter activity metal cation:monoatomic cation antiporter activity chloride transmembrane transporter activity monoatomic anion transmembrane transporter activity sodium,bicarbonate:chloride antiporter activity bicarbonate:monoatomic anion antiporter activity chloride:bicarbonate antiporter activity cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding identical protein binding protein binding	protein localization establishment of protein localization cellular localization nitrogen compound transport transport secretion basolateral protein secretion establishment of protein localization to extracellular region export from cell protein secretion establishment of localization protein localization to extracellular region localization secretion by cell protein transport protein localization establishment of protein localization cellular localization nitrogen compound transport transport secretion basolateral protein secretion establishment of protein localization to extracellular region export from cell protein secretion establishment of localization protein localization to extracellular region localization secretion by cell protein transport cellular macromolecule localization macromolecule localization cellular process monoatomic ion transmembrane transport inorganic ion transmembrane transport inorganic anion transmembrane transport chloride transport transmembrane transport chloride transmembrane transport monoatomic anion transport monoatomic anion transmembrane transport monoatomic ion transport inorganic anion transport bicarbonate transport organic anion transport sodium ion transmembrane transport metal ion transport inorganic cation transmembrane transport monoatomic cation transmembrane transport monoatomic cation transport sodium ion transport trans-synaptic signaling regulation of biological process regulation of signaling regulation of cellular process modulation of chemical synaptic transmission signaling biological regulation cell-cell signaling chemical synaptic transmission cell communication synaptic signaling regulation of trans-synaptic signaling anterograde trans-synaptic signaling regulation of cell communication regulation of biological quality regulation of membrane potential positive regulation of cell communication regulation of localization regulated exocytosis positive regulation of neurotransmitter secretion synaptic vesicle cycle synaptic vesicle exocytosis vesicle-mediated transport vesicle-mediated transport in synapse positive regulation of regulated secretory pathway establishment of localization in cell positive regulation of neurotransmitter transport neurotransmitter secretion regulation of synaptic vesicle exocytosis positive regulation of synaptic transmission neurotransmitter transport regulation of secretion signal release from synapse exocytosis positive regulation of biological process positive regulation of secretion by cell positive regulation of exocytosis regulation of regulated secretory pathway regulation of secretion by cell positive regulation of secretion signal release positive regulation of cellular process positive regulation of synaptic vesicle exocytosis regulation of transport regulation of neurotransmitter transport regulation of vesicle-mediated transport positive regulation of transport regulation of neurotransmitter secretion regulation of exocytosis positive regulation of signaling 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 multicellular organismal process system process circulatory system process vascular process in circulatory system vascular transport transport across blood-brain barrier	symmetric synapse cellular anatomical structure neuron to neuron synapse synapse cell junction membrane cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane axon neuron projection axon terminus symmetric synapse cellular anatomical structure neuron to neuron synapse synapse cell junction membrane cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane axon neuron projection axon terminus plasma membrane bounded cell projection presynapse cell projection distal axon terminal bouton neuron projection terminus presynaptic membrane synaptic membrane basal part of cell basal plasma membrane basolateral plasma membrane glial cell projection somatodendritic compartment dendrite dendritic tree glutamatergic synapse hippocampal mossy fiber neuronal cell body membrane cell body cell body membrane neuronal cell body membrane-bounded organelle intracellular anatomical structure intracellular vesicle transport vesicle membrane endomembrane system intracellular organelle bounding membrane of organelle cytoplasmic vesicle vesicle membrane synaptic vesicle synaptic vesicle membrane vesicle transport vesicle exocytic vesicle membrane intracellular membrane-bounded organelle cytoplasmic vesicle membrane organelle secretory vesicle cytoplasm organelle membrane exocytic vesicle asymmetric synapse

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003024	Sodium bicarbonate cotransporter	Family
A, B	IPR013769	Band 3 cytoplasmic domain	Domain
A, B	IPR003020	Bicarbonate transporter, eukaryotic	Family
A, B	IPR011531	Bicarbonate transporter-like, transmembrane domain	Domain
A, B	IPR016152	Phosphotransferase/anion transporter	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q2Y0W8	Alzheimer disease ductal breast carcinoma in situ large cell medulloblastoma malignant mesothelioma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia astrocytic tumor glioblastoma malignant ependymoma medulloblastoma subependymal giant cell astrocytoma atypical teratoid rhabdoid tumor invasive ductal breast carcinoma malignant glioma ovarian cancer

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.