6GJU | pdb_00006gju

human NBD1 of CFTR in complex with nanobodies T2a and T4

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d6gjub1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	llama (Lama glama ) [TaxId: 9844 ],	SCOPe (2.08)
B	d6gjub2	Artifacts	Tags	Tags	Tags	N-terminal Tags	llama (Lama glama ) [TaxId: 9844 ],	SCOPe (2.08)
C	d6gjuc1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	llama (Lama glama ) [TaxId: 9844 ],	SCOPe (2.08)
C	d6gjuc2	Artifacts	Tags	Tags	Tags	N-terminal Tags	llama (Lama glama ) [TaxId: 9844 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	TrbI	e6gjuA1	A: a/b three-layered sandwiches	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: TrbI	ECOD (v294.1)
B	Peptidase_C1, Peptidase_C1_2	e6gjuB1	A: a/b three-layered sandwiches	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: Peptidase_C1, Peptidase_C1_2	ECOD (v294.1)
C	Peptidase_C1, Peptidase_C1_2	e6gjuC1	A: a/b three-layered sandwiches	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: Peptidase_C1, Peptidase_C1_2	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Heavy Chain	IGHV1	-	cystic fibrosis transmembrane conductance regulator	SAbDab (2026-03-27)
C	Heavy Chain	IGHV1	-	cystic fibrosis transmembrane conductance regulator	SAbDab (2026-03-27)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Cystic fibrosis transmembrane conductance regulator	polypeptide conformation or assembly isomerase activity isomerase activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity intracellularly ligand-gated monoatomic ion channel 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 channel activity polypeptide conformation or assembly isomerase activity isomerase activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity intracellularly ligand-gated monoatomic ion channel 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 channel activity monoatomic ion transmembrane transporter activity monoatomic anion channel activity transporter activity macromolecular conformation isomerase activity catalytic activity 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 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 14-3-3 protein binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide 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 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	developmental process spermatid development spermatid differentiation sexual reproduction cellular developmental process spermatogenesis reproductive process multicellular organismal reproductive process cell development cellular process involved in reproduction in multicellular organism developmental maturation developmental process involved in reproduction gamete generation male gamete generation sperm capacitation developmental process spermatid development spermatid differentiation sexual reproduction cellular developmental process spermatogenesis reproductive process multicellular organismal reproductive process cell development cellular process involved in reproduction in multicellular organism developmental maturation developmental process involved in reproduction gamete generation male gamete generation sperm capacitation anatomical structure maturation cell differentiation anatomical structure development germ cell development cellular process cell maturation transport monoatomic ion 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 lipid localization cholesterol transport lipid transport sterol transport organic hydroxy compound transport bicarbonate transport organic anion 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 biological regulation 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 regulation of body fluid levels multicellular organismal process 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 positive regulation of biological 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 regulation of biological process tissue development regulation of tooth mineralization regulation of enamel mineralization positive regulation of tooth mineralization cellular response to nitrogen compound response to organophosphorus 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 chemical stimulus response to chemical cellular response to cAMP secondary alcohol biosynthetic process small molecule biosynthetic process cholesterol biosynthetic process sterol metabolic process steroid metabolic process cholesterol metabolic process lipid biosynthetic process alcohol metabolic process primary metabolic process secondary alcohol metabolic process biosynthetic process sterol biosynthetic process alcohol biosynthetic process small molecule metabolic process metabolic process steroid biosynthetic process lipid metabolic process cellular localization establishment of localization in cell regulation of intracellular pH cellular homeostasis intracellular monoatomic cation homeostasis regulation of pH monoatomic ion homeostasis intracellular chemical 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	protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex 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 cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex 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 cell periphery basal part of cell plasma membrane basal plasma membrane plasma membrane region basolateral plasma membrane 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 apical part of cell 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
B	Nanobody T4	-	-	-
C	Nanobody T2a	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR047082	Cystic fibrosis transmembrane conductance regulator, ATP-binding cassette domain 1	Domain
A	IPR003439	ABC transporter-like, ATP-binding domain	Domain
A	IPR009147	Cystic fibrosis transmembrane conductance regulator	Family
A	IPR025837	CFTR regulator domain	Domain
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A	IPR003593	AAA+ ATPase domain	Domain
A	IPR011527	ABC transporter type 1, transmembrane domain	Domain
A	IPR017871	ABC transporter-like, conserved site	Conserved Site
A	IPR036640	ABC transporter type 1, transmembrane domain superfamily	Homologous Superfamily
A	IPR050173	ATP-binding cassette transporter C-like	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P13569	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 attention deficit hyperactivity disorder, inattentive type substance abuse 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 Barrett esophagus substance-related disorder ulcerative colitis inflammatory bowel disease lung carcinoma cholestasis male infertility with azoospermia or oligozoospermia due to single gene mutation malignant pancreatic neoplasm

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.