Annotations: 6RQR

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF00595,PF09007	e6rqrA1	A: beta barrels	X: PDZ domain (From Topology)	H: PDZ domain (From Topology)	T: PDZ domain	F: PF00595,PF09007	ECOD (1.6)
B	PF00595,PF09007	e6rqrB1	A: beta barrels	X: PDZ domain (From Topology)	H: PDZ domain (From Topology)	T: PDZ domain	F: PF00595,PF09007	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.30.42.10	Mainly Beta	Roll	Pdz3 Domain	PDZ domain	CATH (utative)
B	2.30.42.10	Mainly Beta	Roll	Pdz3 Domain	PDZ domain	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00595	PDZ domain (PDZ)	PDZ domain	PDZ domains are found in diverse signaling proteins.	Domain
A, B	PF09007	EBP50, C-terminal (EBP50_C)	EBP50, C-terminal	This C terminal domain allows interaction of EBP50 with FERM (four-point one ERM) domains, resulting in the activation of Ezrin-radixin-moesin (ERM), with subsequent cytoskeletal modulation and cellular growth control [1]. It includes a disordered se ...	This C terminal domain allows interaction of EBP50 with FERM (four-point one ERM) domains, resulting in the activation of Ezrin-radixin-moesin (ERM), with subsequent cytoskeletal modulation and cellular growth control [1]. It includes a disordered section between two reasonably well conserved hydrophobic regions.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Na(+)/H(+) exchange regulatory cofactor NHE-RF1,Cystic fibrosis transmembrane conductance regulator	monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity gated channel activity monoatomic ion channel activity intracellularly ATP-gated chloride channel activity intracellularly ATP-gated ion channel activity ligand-gated monoatomic anion channel activity ATP-gated ion channel activity ligand-gated channel activity ligand-gated monoatomic ion channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity intracellular ligand-gated monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity gated channel activity monoatomic ion channel activity intracellularly ATP-gated chloride channel activity intracellularly ATP-gated ion channel activity ligand-gated monoatomic anion channel activity ATP-gated ion channel activity ligand-gated channel activity ligand-gated monoatomic ion channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity intracellular ligand-gated monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity monoatomic anion channel activity transporter activity transmembrane transporter activity inorganic anion transmembrane transporter activity chloride channel activity ABC-type transporter activity active transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity ATP-dependent activity bicarbonate transmembrane transporter activity organic anion transmembrane transporter activity molecular function inhibitor activity chloride channel inhibitor activity channel regulator activity transporter inhibitor activity ion channel regulator activity ion channel inhibitor activity molecular function regulator activity transporter regulator activity channel inhibitor activity chloride channel regulator activity protein binding binding protein-folding chaperone binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding Sec61 translocon complex binding protein-containing complex binding PDZ domain binding protein domain specific binding ATPase-coupled inorganic anion transmembrane transporter activity isomerase activity catalytic activity pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides enzyme binding beta-2 adrenergic receptor binding adrenergic receptor binding signaling receptor binding G protein-coupled receptor binding cytoskeletal protein binding myosin II binding myosin binding type 2 metabotropic glutamate receptor binding glutamate receptor binding G protein-coupled glutamate receptor binding amino acid transmembrane transporter activity gamma-aminobutyric acid transmembrane transporter activity carboxylic acid transmembrane transporter activity organic acid transmembrane transporter activity monocarboxylic acid transmembrane transporter activity phosphatase binding identical protein binding growth factor receptor binding type 3 metabotropic glutamate receptor binding dopamine receptor binding transmembrane transporter binding protein-membrane adaptor activity protein-macromolecule adaptor activity molecular adaptor activity transporter activator activity molecular function activator activity channel activator activity beta-catenin binding protein self-association	spermatid development multicellular organismal process spermatid differentiation sexual reproduction cellular developmental process spermatogenesis reproductive process cell development cellular process involved in reproduction in multicellular organism developmental process involved in reproduction reproduction gamete generation cell differentiation anatomical structure development spermatid development multicellular organismal process spermatid differentiation sexual reproduction cellular developmental process spermatogenesis reproductive process cell development cellular process involved in reproduction in multicellular organism developmental process involved in reproduction reproduction gamete generation cell differentiation anatomical structure development cell maturation developmental process multicellular organismal reproductive process developmental maturation male gamete generation sperm capacitation anatomical structure maturation germ cell development cellular process multicellular organism reproduction transport monoatomic ion transmembrane transport inorganic ion transmembrane transport inorganic anion transmembrane transport establishment of localization chloride transport transmembrane transport localization chloride transmembrane transport monoatomic anion transport monoatomic anion transmembrane transport monoatomic ion transport inorganic anion transport macromolecule localization organic substance transport lipid localization cholesterol transport lipid transport sterol transport organic hydroxy compound transport bicarbonate transport organic anion transport regulation of localization regulation of cellular process positive regulation of biological process regulation of voltage-gated chloride channel activity regulation of transmembrane transporter activity regulation of monoatomic ion transmembrane transport regulation of transporter activity positive regulation of molecular function regulation of monoatomic anion transport positive regulation of monoatomic ion transport positive regulation of transmembrane transport positive regulation of monoatomic ion transmembrane transport positive regulation of cellular process regulation of chloride transport regulation of monoatomic ion transmembrane transporter activity regulation of biological process positive regulation of voltage-gated chloride channel activity regulation of transport positive regulation of anion channel activity regulation of monoatomic ion transport biological regulation regulation of monoatomic anion transmembrane transport regulation of anion channel activity positive regulation of anion transmembrane transport positive regulation of monoatomic anion transport regulation of molecular function regulation of transmembrane transport positive regulation of transport positive regulation of transporter activity positive regulation of ion transmembrane transporter activity positive regulation of inorganic anion transmembrane transport regulation of inorganic anion transmembrane transport transepithelial water transport epithelial fluid transport transepithelial transport fluid transport water transport anatomical structure morphogenesis odontogenesis of dentin-containing tooth anatomical structure formation involved in morphogenesis odontogenesis animal organ development amelogenesis animal organ morphogenesis regulation of biological quality membrane hyperpolarization regulation of membrane potential cellular response to stimulus cellular response to stress response to stimulus response to stress response to endoplasmic reticulum stress positive regulation of cyclic nucleotide-gated ion channel activity regulation of cyclic nucleotide-gated ion channel activity positive regulation of secretion by cell positive regulation of exocytosis vesicle-mediated transport regulation of secretion by cell secretion by cell positive regulation of secretion secretion export from cell regulation of vesicle-mediated transport regulation of secretion exocytosis regulation of exocytosis membrane docking organelle localization by membrane tethering organelle localization vesicle docking exocytic process vesicle docking involved in exocytosis regulation of body fluid levels multicellular organismal-level homeostasis chemical homeostasis homeostatic process multicellular organismal-level water homeostasis multicellular organismal-level chemical homeostasis enamel mineralization tooth mineralization regulation of developmental process regulation of biomineral tissue development positive regulation of enamel mineralization positive regulation of developmental process multicellular organism development positive regulation of biomineral tissue development biomineral tissue development regulation of multicellular organismal process regulation of multicellular organismal development tissue development regulation of tooth mineralization regulation of enamel mineralization positive regulation of tooth mineralization 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 chemical stimulus cellular response to organonitrogen compound response to chemical cellular response to cAMP cellular response to organic substance response to organic cyclic compound organic hydroxy compound metabolic process sterol metabolic process steroid metabolic process cholesterol metabolic process lipid biosynthetic process alcohol metabolic process organic substance metabolic process organic substance biosynthetic process small molecule metabolic process steroid biosynthetic process secondary alcohol biosynthetic process small molecule biosynthetic process cholesterol biosynthetic process primary metabolic process organic cyclic compound metabolic process secondary alcohol metabolic process biosynthetic process sterol biosynthetic process organic hydroxy compound biosynthetic process organic cyclic compound biosynthetic process alcohol biosynthetic process metabolic process lipid metabolic process cellular localization establishment of localization in cell protein localization positive regulation of cell communication establishment of protein localization nitrogen compound transport positive regulation of establishment of protein localization cell communication carbohydrate homeostasis cellular macromolecule localization positive regulation of insulin secretion involved in cellular response to glucose stimulus positive regulation of insulin secretion regulation of peptide hormone secretion regulation of hormone levels positive regulation of peptide hormone secretion establishment of protein localization to extracellular region intracellular glucose homeostasis protein secretion regulation of protein secretion cellular response to carbohydrate stimulus response to glucose glucose homeostasis positive regulation of protein localization insulin secretion involved in cellular response to glucose stimulus regulation of hormone secretion regulation of protein localization regulation of peptide secretion signaling hormone secretion protein localization to extracellular region positive regulation of protein transport peptide secretion positive regulation of hormone secretion response to monosaccharide response to carbohydrate amide transport signal release cellular response to hexose stimulus intracellular chemical homeostasis cellular response to monosaccharide stimulus positive regulation of peptide secretion regulation of signaling regulation of peptide transport regulation of establishment of protein localization cell-cell signaling cellular response to glucose stimulus regulation of protein transport positive regulation of protein secretion peptide transport response to hexose cellular homeostasis protein transport regulation of cellular localization regulation of insulin secretion peptide hormone secretion regulation of insulin secretion involved in cellular response to glucose stimulus hormone transport regulation of cell communication insulin secretion positive regulation of signaling regulation of intracellular pH intracellular monoatomic cation homeostasis regulation of pH monoatomic ion homeostasis monoatomic cation homeostasis intracellular pH elevation regulation of cellular pH intracellular monoatomic ion homeostasis response to ketone response to lipid response to alcohol cellular response to forskolin cellular response to alcohol response to forskolin cellular response to lipid cellular response to ketone inner ear receptor cell development cell projection organization sensory organ development epidermis development auditory receptor cell stereocilium organization neuron projection development epithelial cell differentiation hair cell differentiation neuron differentiation inner ear development system development embryonic organ morphogenesis mechanoreceptor differentiation epithelium development epidermal cell differentiation ear development embryonic morphogenesis nervous system development inner ear receptor cell differentiation generation of neurons auditory receptor cell development embryo development cell morphogenesis cellular component organization neurogenesis cellular component organization or biogenesis auditory receptor cell morphogenesis embryonic organ development ear morphogenesis plasma membrane bounded cell projection organization inner ear auditory receptor cell differentiation cell morphogenesis involved in neuron differentiation sensory organ morphogenesis neuron development inner ear morphogenesis inner ear receptor cell stereocilium organization negative regulation of signaling negative regulation of biological process transmembrane receptor protein tyrosine kinase signaling pathway regulation of signal transduction regulation of platelet-derived growth factor receptor signaling pathway negative regulation of cell communication negative regulation of cellular process signal transduction enzyme-linked receptor protein signaling pathway cell surface receptor signaling pathway negative regulation of response to stimulus negative regulation of platelet-derived growth factor receptor signaling pathway platelet-derived growth factor receptor signaling pathway negative regulation of signal transduction regulation of response to stimulus renal system process system process renal sodium ion transport metal ion transport monoatomic cation transport sodium ion transport membrane organization plasma membrane organization endomembrane system organization tissue morphogenesis morphogenesis of an epithelium regulation of cellular component size regulation of cell size regulation of anatomical structure size establishment of organelle localization nucleus localization intracellular transport nuclear migration regulation of canonical Wnt signaling pathway canonical Wnt signaling pathway cell-cell signaling by wnt negative regulation of Wnt signaling pathway Wnt signaling pathway regulation of Wnt signaling pathway negative regulation of canonical Wnt signaling pathway protein localization to cell periphery protein localization to plasma membrane localization within membrane protein localization to membrane negative regulation of intracellular signal transduction intracellular signal transduction regulation of intracellular signal transduction intracellular signaling cassette regulation of MAPK cascade negative regulation of ERK1 and ERK2 cascade MAPK cascade ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade negative regulation of MAPK cascade establishment or maintenance of bipolar cell polarity establishment or maintenance of epithelial cell apical/basal polarity maintenance of cell polarity maintenance of epithelial cell apical/basal polarity maintenance of apical/basal cell polarity establishment or maintenance of apical/basal cell polarity establishment or maintenance of cell polarity ameboidal-type cell migration cell migration fibroblast migration cell motility negative regulation of monoatomic ion transport negative regulation of transport regulation of sodium ion transport negative regulation of sodium ion transport regulation of metal ion transport organelle organization actin cytoskeleton organization actin filament-based process cytoskeleton organization bile acid secretion carboxylic acid transport acid secretion organic acid transport monocarboxylic acid transport plasma membrane bounded cell projection assembly microvillus organization cellular component biogenesis cellular component assembly microvillus assembly cell projection assembly nervous system process epithelial cilium movement involved in extracellular fluid movement extracellular transport microtubule-based transport microtubule-based movement microtubule-based process cerebrospinal fluid circulation cilium movement renal absorption regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction phosphatidylinositol 3-kinase/protein kinase B signal transduction sensory perception sensory perception of sound sensory perception of mechanical stimulus gland morphogenesis gland development positive regulation of signal transduction regulation of programmed cell death regulation of intrinsic apoptotic signaling pathway positive regulation of apoptotic signaling pathway positive regulation of response to stimulus intrinsic apoptotic signaling pathway positive regulation of programmed cell death regulation of apoptotic process positive regulation of intracellular signal transduction cell death positive regulation of apoptotic process apoptotic signaling pathway positive regulation of intrinsic apoptotic signaling pathway apoptotic process programmed cell death regulation of apoptotic signaling pathway gamma-aminobutyric acid import amino acid transport acidic amino acid transport gamma-aminobutyric acid transport response to dopamine dopamine receptor signaling pathway cellular response to dopamine response to monoamine response to catecholamine adenylate cyclase-activating dopamine receptor signaling pathway cellular response to catecholamine stimulus adenylate cyclase-activating G protein-coupled receptor signaling pathway cellular response to monoamine stimulus adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway circulatory system process vascular process in circulatory system vascular transport transport across blood-brain barrier regulation of protein modification process regulation of catalytic activity regulation of protein phosphorylation regulation of transferase activity regulation of primary metabolic process regulation of nitrogen compound metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process nitrogen compound metabolic process protein metabolic process phosphorus metabolic process protein modification process organonitrogen compound metabolic process protein phosphorylation phosphorylation cellular metabolic process regulation of protein metabolic process regulation of cellular metabolic process regulation of protein kinase activity regulation of macromolecule metabolic process regulation of kinase activity macromolecule modification regulation of phosphorylation regulation of phosphorus metabolic process macromolecule metabolic process regulation of metabolic process negative regulation of locomotion regulation of cell motility regulation of fibroblast migration negative regulation of fibroblast migration regulation of locomotion regulation of cell migration negative regulation of cell motility negative regulation of cell migration locomotion phospholipase C-activating dopamine receptor signaling pathway phospholipase C-activating G protein-coupled receptor signaling pathway Golgi localization establishment of Golgi localization phosphate ion homeostasis intracellular phosphate ion homeostasis inorganic ion homeostasis protein-containing complex organization protein-containing complex assembly import into cell import across plasma membrane polarized epithelial cell differentiation establishment of monopolar cell polarity establishment or maintenance of monopolar cell polarity morphogenesis of a polarized epithelium establishment of epithelial cell apical/basal polarity establishment of cell polarity establishment of apical/basal cell polarity establishment of epithelial cell polarity excretion regulation of renal system process regulation of system process renal tubular secretion regulation of renal phosphate excretion renal phosphate excretion regulation of excretion renal phosphate ion absorption regulation of cell shape regulation of cell morphogenesis regulation of anatomical structure morphogenesis negative regulation of cell population proliferation cell population proliferation regulation of cell population proliferation oligopeptide transport glutathione transport tripeptide transport sulfur compound transport modified amino acid transport cilium organization negative regulation of cell cycle negative regulation of mitotic cell cycle mitotic cell cycle regulation of mitotic cell cycle cell cycle regulation of cell cycle	protein-containing complex transmembrane transporter complex membrane chloride channel complex membrane protein complex cellular anatomical entity transporter complex monoatomic ion channel complex membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular organelle bounding membrane of organelle cytoplasmic vesicle protein-containing complex transmembrane transporter complex membrane chloride channel complex membrane protein complex cellular anatomical entity transporter complex monoatomic ion channel complex membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular organelle bounding membrane of organelle cytoplasmic vesicle vesicle membrane clathrin-coated vesicle endocytic vesicle membrane coated vesicle vesicle endocytic vesicle clathrin-coated vesicle membrane clathrin-coated endocytic vesicle membrane intracellular membrane-bounded organelle clathrin-coated endocytic vesicle cytoplasmic vesicle membrane coated vesicle membrane organelle cytoplasm organelle membrane cytosol vacuolar membrane lytic vacuole vacuole lytic vacuole membrane lysosomal membrane lysosome endosome recycling endosome endomembrane system endosome membrane Golgi-associated vesicle membrane Golgi-associated vesicle cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane cell surface organelle subcompartment endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum endoplasmic reticulum membrane early endosome recycling endosome membrane early endosome membrane nucleus cell projection stereocilium actin-based cell projection stereocilium tip stereocilium bundle neuron projection cluster of actin-based cell projections plasma membrane bounded cell projection extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space extracellular membrane-bounded organelle cytoskeleton intracellular non-membrane-bounded organelle actin cytoskeleton non-membrane-bounded organelle microvillus microvillus membrane cell projection membrane sperm midpiece cilium 9+2 motile cilium sperm flagellum motile cilium plasma membrane protein complex ruffle cell leading edge perinuclear region of cytoplasm filopodium brush border membrane brush border

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR047082	Cystic fibrosis transmembrane conductance regulator, ATP-binding cassette domain 1	Domain
A, B	IPR003439	ABC transporter-like, ATP-binding domain	Domain
A, B	IPR009147	Cystic fibrosis transmembrane conductance regulator	Family
A, B	IPR025837	CFTR regulator domain	Domain
A, B	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A, B	IPR003593	AAA+ ATPase domain	Domain
A, B	IPR011527	ABC transporter type 1, transmembrane domain	Domain
A, B	IPR017871	ABC transporter-like, conserved site	Conserved Site
A, B	IPR036640	ABC transporter type 1, transmembrane domain superfamily	Homologous Superfamily
A, B	IPR017300	Na(+)/H(+) exchange regulatory cofactor NHERF-1/2	Family
A, B	IPR015098	EBP50, C-terminal	Domain
A, B	IPR036034	PDZ superfamily	Homologous Superfamily
A, B	IPR001478	PDZ domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: O14745	cystic fibrosis pancreatitis rhinitis bronchiectasis with or without elevated sweat chloride 1 autosomal recessive polycystic kidney disease Congenital bilateral aplasia of vas deferens sinusitis esophageal adenocarcinoma azoospermia male infertility chronic pancreatitis congenital bilateral aplasia of vas deferens from CFTR mutation hereditary chronic pancreatitis choledochal cyst colorectal cancer cystic fibrosis pancreatitis rhinitis bronchiectasis with or without elevated sweat chloride 1 autosomal recessive polycystic kidney disease Congenital bilateral aplasia of vas deferens sinusitis esophageal adenocarcinoma azoospermia male infertility chronic pancreatitis congenital bilateral aplasia of vas deferens from CFTR mutation hereditary chronic pancreatitis choledochal cyst colorectal cancer congenital diaphragmatic hernia pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia drug dependence endogenous depression heart disease substance dependence bronchiectasis lung adenocarcinoma lung disease colorectal carcinoma pancreatic intraductal papillary-mucinous carcinoma cutaneous lupus erythematosus psoriasis substance abuse attention deficit hyperactivity disorder, inattentive type hemochromatosis type 1 idiopathic bronchiectasis Tourette syndrome lung cancer malignant mesothelioma non-small cell lung carcinoma pancreatic intraductal papillary-mucinous neoplasm plantar fibromatosis Sjogren syndrome substance-related disorder Barrett esophagus inflammatory bowel disease ulcerative colitis lung carcinoma male infertility with azoospermia or oligozoospermia due to single gene mutation cholestasis malignant pancreatic neoplasm hypophosphatemic nephrolithiasis/osteoporosis 2 invasive ductal breast carcinoma adrenal cortex carcinoma ductal breast carcinoma in situ Mammary Ductal Carcinoma osteosarcoma atypical teratoid rhabdoid tumor medulloblastoma ovarian cancer breast carcinoma non-small cell lung carcinoma ulcerative colitis

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.