Annotations: 8JTX

hOCT1 in complex with nb5660 in inward facing fully open conformation

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: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	DNA_topoisoIV	e8jtxB1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: DNA_topoisoIV	ECOD (v294.2)
A	DNA_topoisoIV	e8jtxA1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: DNA_topoisoIV	ECOD (v294.2)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Heavy Chain	IGHV1	-	solute carrier family 22 member 1	SAbDab (2026-06-05)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00083	Sugar (and other) transporter (Sugar_tr)	Sugar (and other) transporter	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	nanobody 56	-	-	-
A	Solute carrier family 22 member 1	monoatomic cation transmembrane transporter activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity solute:sodium symporter activity solute:monoatomic cation symporter activity monoatomic anion:sodium symporter activity monoamine transmembrane transporter activity sodium ion transmembrane transporter activity sodium:chloride symporter activity monoatomic anion:monoatomic cation symporter activity secondary active transmembrane transporter activity chloride:monoatomic cation symporter activity active transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity monoatomic cation transmembrane transporter activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity solute:sodium symporter activity solute:monoatomic cation symporter activity monoatomic anion:sodium symporter activity monoamine transmembrane transporter activity sodium ion transmembrane transporter activity sodium:chloride symporter activity monoatomic anion:monoatomic cation symporter activity secondary active transmembrane transporter activity chloride:monoatomic cation symporter activity active transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity symporter activity dopamine:sodium symporter activity (R)-carnitine transmembrane transporter activity carnitine transmembrane transporter activity quaternary ammonium group transmembrane transporter activity modified amino acid transmembrane transporter activity neurotransmitter transmembrane transporter activity acetate ester transmembrane transporter activity acetylcholine transmembrane transporter activity norepinephrine:sodium symporter activity spermidine transmembrane transporter activity polyamine transmembrane transporter activity icosanoid transmembrane transporter activity lipid transmembrane transporter activity prostaglandin transmembrane transporter activity thiamine transmembrane transporter activity azole transmembrane transporter activity sulfur compound transmembrane transporter activity vitamin transmembrane transporter activity xenobiotic transmembrane transporter activity identical protein binding protein binding binding toxin transmembrane transporter activity carbohydrate derivative transmembrane transporter activity pyrimidine nucleoside transmembrane transporter activity nucleoside transmembrane transporter activity nucleobase-containing compound transmembrane transporter activity putrescine transmembrane transporter activity	localization transport neurotransmitter transport establishment of localization nitrogen compound transport vitamin transport thiamine transport transmembrane transport azole transmembrane transport pyrimidine-containing compound transmembrane transport sulfur compound transport cellular process thiamine transmembrane transport vitamin transmembrane transport localization transport neurotransmitter transport establishment of localization nitrogen compound transport vitamin transport thiamine transport transmembrane transport azole transmembrane transport pyrimidine-containing compound transmembrane transport sulfur compound transport cellular process thiamine transmembrane transport vitamin transmembrane transport acetylcholine transport acetate ester transport import into cell cellular localization serotonin uptake organic hydroxy compound transport establishment of localization in cell neurotransmitter uptake neurotransmitter reuptake xenobiotic transport purine-containing compound transmembrane transport quaternary ammonium group transport multicellular organismal process system process xenobiotic transport across blood-brain barrier vascular transport circulatory system process vascular process in circulatory system transport across blood-brain barrier putrescine transport polyamine transport spermidine transport prostaglandin transport carboxylic acid transport lipid localization lipid transport organic acid transport monocarboxylic acid transport fatty acid transport icosanoid transport macromolecule localization monoatomic ion transmembrane transport monoatomic ion transport establishment or maintenance of transmembrane electrochemical gradient kidney epithelium development metanephric proximal tubule development nephron tubule development metanephric epithelium development renal system development multicellular organism development metanephros development renal tubule development anatomical structure development nephron development metanephric nephron epithelium development system development nephron epithelium development developmental process epithelium development proximal tubule development tube development metanephric nephron tubule development animal organ development tissue development metanephric tubule development kidney development dopamine uptake catecholamine uptake O-acyl-L-carnitine transmembrane transport cellular response to stimulus cellular response to chemical stimulus response to stimulus response to chemical cellular response to xenobiotic stimulus metabolic process xenobiotic metabolic process response to xenobiotic stimulus cellular detoxification detoxification cellular response to toxic substance response to toxic substance	cellular anatomical structure membrane cell periphery basal part of cell plasma membrane basal plasma membrane plasma membrane region basolateral plasma membrane apical part of cell apical plasma membrane presynapse synapse cell junction lateral plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR005829	Sugar transporter, conserved site	Conserved Site
A	IPR020846	Major facilitator superfamily domain	Domain
A	IPR004749	Organic cation transport protein/SVOP	Family
A	IPR005828	Major facilitator, sugar transporter-like	Family
A	IPR036259	MFS transporter superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	: O15245	malignant colon neoplasm obesity disorder benign colon neoplasm gingivitis Hypercholesterolemia, Familial nephrolithiasis prostate carcinoma chronic kidney disease heart disease colonic neoplasm hepatocellular carcinoma pancreatic ductal adenocarcinoma

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Solute Carrier (SLC) Transporter Superfamily	Organic cation transporter 1 (OCT1), apo form, inward fully open state

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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.