7A6C | pdb_00007a6c

Nanodisc reconstituted human ABCB1 in complex with MRK16 Fab and elacridar

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	ABC_membrane	e7a6cA4	A: alpha bundles	X: Type II ABC exporter transmembrane domain fold	H: Type I ABC exporter transmembrane domain fold (From Topology)	T: Type I ABC exporter transmembrane domain fold	F: ABC_membrane	ECOD (1.6)
A	ABC_tran_1	e7a6cA1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: ABC_tran_1	ECOD (1.6)
B	C1-set_4	e7a6cB2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_4	ECOD (1.6)
B	V-set	e7a6cB1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set	ECOD (1.6)
C	C1-set_1	e7a6cC2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_1	ECOD (1.6)
C	V-set_12	e7a6cC1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_12	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
B	Fab MRK16, anti-ABCB1	L-KAPPA	Mus musculus (house mouse)	IGKV1-11701, IGKJ101, IGKJ201, IGKC01, IGKC*02	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-2A_KAPPA	IMGT (202525-0)
C	Fab MRK16, anti-ABCB1	VH-CH1	Mus musculus (house mouse)	IGHV5-903, IGHV5-9-501, IGHJ301, IGHG2A01, IGHG2A*02	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-2A_KAPPA	IMGT (202525-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Light Chain	IGKV1	Kappa	multidrug resistance protein 1	SAbDab (2025-07-04)
C	Heavy Chain	IGHV5	-	multidrug resistance protein 1	SAbDab (2025-07-04)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Multidrug resistance protein 1	transporter activity carboxylic acid transmembrane transporter activity organic acid transmembrane transporter activity transmembrane transporter activity organic anion transmembrane transporter activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding transporter activity carboxylic acid transmembrane transporter activity organic acid transmembrane transporter activity transmembrane transporter activity organic anion transmembrane transporter activity 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 ubiquitin protein ligase binding protein binding ubiquitin-like protein ligase binding enzyme binding xenobiotic transmembrane transporter activity phosphatidylcholine transporter activity ATPase-coupled intramembrane lipid transporter activity lipid transporter activity intramembrane lipid transporter activity phosphatidylcholine floppase activity floppase activity phospholipid transporter activity ATP-dependent activity sphingolipid floppase activity sphingolipid transporter activity ceramide floppase activity glycerophospholipid flippase activity flippase activity phosphatidylethanolamine flippase activity ABC-type transporter activity active transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity ABC-type xenobiotic transporter 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 catalytic activity efflux transmembrane transporter activity	response to stimulus response to chemical response to xenobiotic stimulus response to cyclosporin A response to oxygen-containing compound response to nitrogen compound localization glycoside transport nitrogen compound transport transport daunorubicin transport carbohydrate derivative transport establishment of localization organic cation transport response to stimulus response to chemical response to xenobiotic stimulus response to cyclosporin A response to oxygen-containing compound response to nitrogen compound localization glycoside transport nitrogen compound transport transport daunorubicin transport carbohydrate derivative transport establishment of localization organic cation transport developmental process placenta development animal organ development anatomical structure development response to ketone response to lipid response to hormone response to steroid hormone response to endogenous stimulus response to progesterone response to peptide hormone response to glucagon transmembrane transport export from cell cellular process export across plasma membrane multicellular organismal process system process digestion intestinal absorption digestive system process response to nutrient levels response to nutrient response to vitamin A response to vitamin cellular response to nitrogen compound cellular response to stimulus cellular response to chemical stimulus cellular response to alkaloid response to alkaloid response to mycotoxin cellular response to mycotoxin cellular response to toxic substance response to toxic substance regulation of localization regulation of biological process regulation of transport regulation of monoatomic ion transport biological regulation chloride transport monoatomic anion transport regulation of monoatomic anion transport monoatomic ion transport regulation of chloride transport inorganic anion transport response to thyroid hormone response to thyroxine response to amino acid response to L-phenylalanine derivative response to acid chemical cellular response to endogenous stimulus cellular response to ketone cellular response to steroid hormone stimulus cellular response to hormone stimulus cellular response to dexamethasone stimulus response to glucocorticoid cellular response to glucocorticoid stimulus cellular response to oxygen-containing compound cellular response to corticosteroid stimulus response to corticosteroid cellular response to lipid response to dexamethasone cellular response to acid chemical cellular response to amino acid stimulus cellular response to L-glutamate response to L-glutamate stem cell proliferation cell population proliferation cellular response to antibiotic response to antibiotic xenobiotic transport across blood-brain barrier xenobiotic transport vascular transport circulatory system process vascular process in circulatory system transport across blood-brain barrier negative regulation of nervous system process nervous system process regulation of system process negative regulation of biological process sensory perception of pain regulation of nervous system process sensory perception regulation of sensory perception regulation of multicellular organismal process regulation of sensory perception of pain negative regulation of multicellular organismal process negative regulation of sensory perception of pain positive regulation of response to stimulus regulation of response to stimulus regulation of response to drug positive regulation of biological process positive regulation of response to drug response to decreased oxygen levels response to hypoxia response to stress response to oxygen levels response to abiotic stimulus regulation of body fluid levels secretion mammary gland development gland development body fluid secretion lactation regulation of biological quality response to osmotic stress cellular response to salt stress cellular hyperosmotic salinity response cellular response to chemical stress cellular response to osmotic stress response to salt stress cellular response to environmental stimulus hyperosmotic salinity response hyperosmotic response cellular hyperosmotic response cellular response to stress cellular response to abiotic stimulus cell cycle G2/M phase transition mitotic cell cycle process G2/M transition of mitotic cell cycle cell cycle phase transition cell cycle mitotic cell cycle cell cycle process mitotic cell cycle phase transition xenobiotic export from cell xenobiotic detoxification by transmembrane export across the plasma membrane detoxification cellular response to nonylphenol response to nonylphenol regulation of hormone levels hormone transport response to quercetin response to flavonoid organic acid transport organic acid transmembrane transport organic anion transport carboxylic acid transmembrane transport carboxylic acid transport rhythmic process circadian rhythm cellular developmental process establishment of blood-brain barrier cell development nervous system development multicellular organism development central nervous system development cell differentiation system development multi-multicellular organism process reproductive process female pregnancy multi-organism reproductive process biological process involved in interspecies interaction between organisms response to other organism cellular response to lipopolysaccharide response to external stimulus cellular response to molecule of bacterial origin response to lipopolysaccharide response to biotic stimulus cellular response to biotic stimulus response to bacterium response to external biotic stimulus response to molecule of bacterial origin membrane organization ceramide translocation sphingolipid translocation lipid localization lipid transport lipid translocation regulation of membrane lipid distribution cellular component organization ceramide transport amide transport macromolecule localization cellular component organization or biogenesis regulation of cellular process regulation of developmental process regulation of reproductive process positive regulation of establishment of Sertoli cell barrier sex differentiation regulation of cell differentiation developmental process involved in reproduction epithelial cell differentiation Sertoli cell differentiation male gonad development regulation of cell development male sex differentiation positive regulation of developmental process development of primary male sexual characteristics development of primary sexual characteristics positive regulation of cell differentiation reproductive structure development positive regulation of cellular process positive regulation of reproductive process epithelium development gonad development reproductive system development Sertoli cell development positive regulation of cell development establishment of Sertoli cell barrier regulation of establishment of Sertoli cell barrier tissue development epithelial cell development transepithelial transport terpenoid transport isoprenoid transport cellular response to external biotic stimulus cellular response to external stimulus response to peptide cellular response to tumor necrosis factor response to cytokine cellular response to cytokine stimulus response to tumor necrosis factor establishment of blood-retinal barrier cellular response to xenobiotic stimulus metabolic process xenobiotic metabolic process response to antineoplastic agent response to vitamin D response to estradiol cellular response to estradiol stimulus maintenance of blood-brain barrier multicellular organismal-level homeostasis homeostatic process anatomical structure homeostasis tissue homeostasis cellular response to borneol response to borneol protein localization cellular localization protein localization to bicellular tight junction cellular macromolecule localization protein localization to cell junction protein localization to cell-cell junction response to metal ion response to cadmium ion response to isoquinoline alkaloid response to codeine response to glycoside regulation of intestinal absorption regulation of digestive system process phospholipid translocation phospholipid transport organophosphate ester transport response to alcohol	cellular anatomical structure membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle intracellular anatomical structure cytoplasm cell periphery cellular anatomical structure membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle intracellular anatomical structure cytoplasm cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane cell surface external side of apical plasma membrane side of membrane external side of plasma membrane brush border membrane cluster of actin-based cell projections plasma membrane bounded cell projection brush border cell projection cell projection membrane
B	If kappa light chain	cation binding ion binding binding metal ion binding small molecule binding	-	-
C	MRK16 Fab-fragment heavy chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR003439	ABC transporter-like, ATP-binding domain	Domain
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A	IPR039421	Type 1 protein exporter	Family
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
B	IPR003597	Immunoglobulin C1-set	Domain
B	IPR050150	Immunoglobulin Variable Light Chain	Family
B	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B	IPR013106	Immunoglobulin V-set domain	Domain
B	IPR003599	Immunoglobulin domain subtype	Domain
B	IPR007110	Immunoglobulin-like domain	Domain
B	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P08183	non-small cell lung carcinoma inflammatory bowel disease 13 adrenal cortex carcinoma rheumatoid arthritis diffuse large B-cell lymphoma neutropenia ulcerative colitis neuroblastoma cancer bipolar disorder breast carcinoma Pain, Postoperative carcinoma peripheral neuropathy hematopoietic and lymphoid system neoplasm non-small cell lung carcinoma inflammatory bowel disease 13 adrenal cortex carcinoma rheumatoid arthritis diffuse large B-cell lymphoma neutropenia ulcerative colitis neuroblastoma cancer bipolar disorder breast carcinoma Pain, Postoperative carcinoma peripheral neuropathy hematopoietic and lymphoid system neoplasm colorectal cancer schizophrenia nervous system disorder cannabis dependence escherichia coli infection head and neck squamous cell carcinoma poisoning secondary Parkinson disease breast cancer epilepsy esophageal cancer Parkinson disease peripheral nervous system disease sarcomatoid carcinoma juvenile idiopathic arthritis kidney neoplasm tuberculosis pancreatic intraductal papillary-mucinous neoplasm gallbladder cancer acute coronary syndrome adrenal carcinoma childhood acute lymphoblastic leukemia hepatocellular carcinoma alopecia Prinzmetal angina hypertensive disorder interstitial lung disease autism testicular cancer Kaposi's sarcoma benign neoplasm toxic encephalopathy Langerhans cell histiocytosis breast disease opiate dependence leukopenia pancreatic ductal adenocarcinoma lung cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia gallbladder disease acute intermittent porphyria cholelithiasis colorectal carcinoma congenital heart disease psychiatric disorder depressive disorder inherited disease susceptibility atrial fibrillation neoplasm of esophagus kidney cancer drug-induced liver injury large cell medulloblastoma ovarian cancer undifferentiated carcinoma pancreatic intraductal papillary-mucinous carcinoma major depressive disorder gestational trophoblastic neoplasm acute myeloid leukemia malignant mesothelioma hematologic disease Hodgkins lymphoma mycosis fungoides Crohn disease psychotic disorder idiopathic pulmonary fibrosis neonatal abstinence syndrome

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM	Transmembrane	Alpha-helical polytopic	ABC transporters	Multidrug resistance exporter (MDR)

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	ATP Binding Cassette (ABC) Transporters	P-Glycoprotein multi-drug transporter (ABCB1) in nanodiscs

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.