Annotations: 8Y6I

P-glycoprotein in complex with UIC2 Fab and triple elacridar molecules in nanodisc

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
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	WD40	e8y6iA1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)
B	WD40	e8y6iB1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)
C	WD40	e8y6iC1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Light Chain	IGKV1	Kappa	atp-dependent translocase abcb1,mneongreen	SAbDab (2026-06-12)
C	Heavy Chain	IGHV1	-	atp-dependent translocase abcb1,mneongreen	SAbDab (2026-06-12)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00664	ABC transporter transmembrane region (ABC_membrane)	ABC transporter transmembrane region	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	ATP-dependent translocase ABCB1,mNeonGreen	lipid carrier activity ATPase-coupled intramembrane lipid carrier activity phosphatidylcholine floppase activity transporter activity floppase activity phosphatidylcholine intramembrane carrier activity intramembrane lipid carrier activity molecular carrier activity ATP-dependent activity sphingolipid intramembrane carrier activity sphingolipid floppase activity ceramide floppase activity carboxylic acid transmembrane transporter activity transmembrane transporter activity lipid carrier activity ATPase-coupled intramembrane lipid carrier activity phosphatidylcholine floppase activity transporter activity floppase activity phosphatidylcholine intramembrane carrier activity intramembrane lipid carrier activity molecular carrier activity ATP-dependent activity sphingolipid intramembrane carrier activity sphingolipid floppase activity ceramide floppase activity carboxylic acid transmembrane transporter activity transmembrane transporter activity glycerophospholipid flippase activity flippase activity phosphatidylethanolamine flippase activity xenobiotic transmembrane transporter activity ABC-type transporter activity active transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity ABC-type xenobiotic 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 phosphatidylethanolamine floppase 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 ubiquitin protein ligase binding protein binding ubiquitin-like protein ligase binding enzyme binding efflux transmembrane transporter activity	response to stimulus response to chemical response to xenobiotic stimulus transmembrane transport organic acid transport localization carboxylic acid transmembrane transport carboxylic acid transport transport cellular process establishment of localization export from cell export across plasma membrane membrane organization response to stimulus response to chemical response to xenobiotic stimulus transmembrane transport organic acid transport localization carboxylic acid transmembrane transport carboxylic acid transport transport cellular process establishment of localization export from cell export across plasma membrane membrane organization ceramide translocation nitrogen compound transport sphingolipid translocation biological regulation lipid localization lipid transport lipid translocation regulation of membrane lipid distribution cellular component organization ceramide transport macromolecule localization cellular component organization or biogenesis regulation of biological quality regulation of localization regulation of biological process regulation of transport regulation of monoatomic ion transport chloride transport monoatomic anion transport regulation of monoatomic anion transport monoatomic ion transport regulation of chloride transport inorganic anion transport transepithelial transport terpenoid transport isoprenoid transport stem cell proliferation cell population proliferation cellular response to stimulus cellular response to chemical stimulus cellular response to xenobiotic stimulus metabolic process xenobiotic metabolic process multicellular organismal process system process xenobiotic transport across blood-brain barrier xenobiotic transport vascular transport circulatory system process vascular process in circulatory system transport across blood-brain barrier 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 response to toxic substance phospholipid translocation phospholipid transport organophosphate ester transport	cellular anatomical structure membrane cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle vesicle cellular anatomical structure membrane cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle cell surface external side of apical plasma membrane side of membrane external side of plasma membrane intracellular anatomical structure cytoplasm
B	UIC2 Fab light chain	-	-	-
C	UIC2 Fab heavy chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR003439	ABC transporter-like, ATP-binding domain	Domain
A	IPR003593	AAA+ ATPase domain	Domain
A	IPR011527	ABC transporter type 1, transmembrane domain	Domain
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A	IPR017871	ABC transporter-like, conserved site	Conserved Site
A	IPR036640	ABC transporter type 1, transmembrane domain superfamily	Homologous Superfamily
A	IPR039421	Type 1 protein exporter	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	: 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 Liver Cirrhosis, Experimental 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 Liver Cirrhosis, Experimental carcinoma peripheral neuropathy hematopoietic and lymphoid system neoplasm colorectal cancer schizophrenia nervous system disorder escherichia coli infection cannabis dependence 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 gallbladder cancer acute coronary syndrome pancreatic intraductal papillary-mucinous neoplasm 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 leukopenia breast disease opiate dependence lung cancer pancreatic ductal adenocarcinoma gallbladder disease acute intermittent porphyria pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia cholelithiasis colorectal carcinoma psychiatric disorder congenital heart disease inherited disease susceptibility atrial fibrillation depressive disorder neoplasm of esophagus kidney cancer large cell medulloblastoma drug-induced liver injury undifferentiated carcinoma ovarian cancer major depressive disorder pancreatic intraductal papillary-mucinous carcinoma gestational trophoblastic neoplasm acute myeloid leukemia malignant mesothelioma hematologic disease Hodgkins lymphoma psychotic disorder idiopathic pulmonary fibrosis mycosis fungoides Crohn disease neonatal abstinence syndrome

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 complex with UIC2 Fab, with bound elacridar, in nanodiscs

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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.