Drug Transporter (DT) Information

General Information of DT
DT ID DTD0009
Gene Name SLC22A3
Protein Name Organic cation transporter 3
Gene ID
6581
UniProt ID
O75751
TCDB ID
2.A.1.19.24
3D Structure

Modelled DT Structure

Method: multi-sequence alignment based machine learning

Detail: Structure Info

Synonyms OCT3; EMT; EMTH; Extraneuronal monoamine transporter; SLC22A3; Solute carrier family 22 member 3
DT Family Major Facilitator Superfamily (MFS)
Organic Cation Transporter (OCT) Family
Tissue Specificity Highly expressed in the kidney, liver, placenta, heart, and skeletal muscle,to a lesser extent, in other organs including the lung and brain, as well as in cancer-derived cell lines
Function This transporter may play a significant role in the disposition of cationic neurotoxins and neurotransmitters in the brain and mediate potential-dependent transport of a variety of organic cations.
Disease(s) Cataract [ICD-11: 9B10]
Neurogenic shock [ICD-11: MG40.Y]
Respiratory allergies [ICD-11: 4A80]
Type 2 diabetes [ICD-11: 5A11]
Severe mood disorders [ICD-11: 6A8Z]
Endogenous Substrate(s) Monoamines
Variability Data of This Drug Transporter (DT)

Regulatory Variability Data of This DT (VARIDT 3.0)

(α) Microbiota Influence of This DT
Microbiota Influence (MBI)

(β) Post-translational Modification of This DT
Post-translational Modification (PTM)

(γ) Transcriptional Regulation of This DT
Transcriptional Regulation (TSR)

(δ) Epigenetic Regulation of This DT
Epigenetic Regulation (EGR)

(ε) Exogenous Modulation of This DT
Exogenous Modulation (EGM)

Structural Variability Data of This DT (VARIDT 2.0)

(β) Inter-species Structural Differences
Inter-species Structural Differences (ISD)

General Variability Data of This DT (VARIDT 1.0)

(α) Genetic Polymorphisms of This DT
Genetic Polymorphisms of This DT (GPD)

(β) Disease-specific Protein Abundances of This DT
Disease-specific Protein Abundances of This DT (DPAD)

(γ) Species- and Tissue-specific DT Abundances
Species/Tissue-specific Protein Abundances of This DT (S/TPAD)
Molecular Transporting Profile of This DT

Full List of Drug(s) Transported by This DT

 Approved Drug

 Click to Show/Hide the Full List of Drug:          10 Drugs in Total
Drug Name Highest Status Detail Indication ICD 11 Ref
Acetylcholine
 Approved Drug Info Cataract 9B10 [1]
Amphetamine
 Approved Drug Info Attention deficit hyperactivity disorder 6A05 [2]
Clonidine
 Approved Drug Info High blood pressure BA00 [3]
Entecavir
 Approved Drug Info Chronic hepatitis B infection 1E51.0 [4]
Epinephrine
 Approved Drug Info Asthma CA23 [5]
Ergotidine
 Approved Drug Info Migraine 8A80 [5]
Metformin
 Approved Drug Info Type 2 diabetes 5A11 [6]
Norepinephrine
 Approved Drug Info Septic shock 1G41 [5]
Propranolol
 Approved Drug Info Migraine 8A80 [3]
Sodium chloride
 Approved Drug Info Severe mood disorders 6A8Z [7]

 Withdrawn, Discontinued or Preclinical Drug

 Click to Show/Hide the Full List of Drug:            2 Drugs in Total
Drug Name Highest Status Detail Indication ICD 11 Ref
Etilefrine
 Withdrawn Drug Info Hypotension BA2Z [8]
N-methylpyridinium
 Preclinical Drug Info Colon cancer 2B90.Z [9]

Endogenous Metabolites (EMs) Handled by This DT

 Endogenous Metabolites (EMs)

 Click to Show/Hide the Full List of EMs:            3 EMs in Total
EM Name PubChem CID Detail Experimental Material Ref
Epinephrine
5816
EM Info Identified using HEK293 cells-OCT3 [5]
Histamine
774
EM Info Identified using HEK293 cells-OCT3 [5]
Norepinephrine
439260
EM Info Identified using HEK293 cells-OCT3 [5]

Drug-DT Affinity Assessed by Cell Line

 Approved Drug

 Click to Show/Hide the Full List of Drug:            6 Drugs in Total
Drug Name Highest Status Detail Cell Line Affinity Ref
Epinephrine Approved Drug Info Human embryonic kidney cells (HEK293)-OCT3 Km = 240 microM [5]
Ergotidine Approved Drug Info Human embryonic kidney cells (HEK293)-OCT3 Km = 180 microM [10]
Ergotidine Approved Drug Info Human embryonic kidney cells (HEK293)-OCT3 Km = 220 microM [5]
Metformin Approved Drug Info Chinese hamster ovary (CHO) cells-OCT3 Km = 2260 microM [6]
Norepinephrine Approved Drug Info Human embryonic kidney cells (HEK293)-OCT3 Km = 510 microM [11]
Norepinephrine Approved Drug Info Human embryonic kidney cells (HEK293)-OCT3 Km = 2630 microM [5]

 Withdrawn, Discontinued or Preclinical Drug

 Click to Show/Hide the Full List of Drug:            2 Drugs in Total
Drug Name Highest Status Detail Cell Line Affinity Ref
Etilefrine Withdrawn Drug Info Chinese hamster ovary (CHO) cells-OCT3 Km = 2800 microM [8]
N-methylpyridinium Preclinical Drug Info Human retinal pigment epithelial (HRPE) cells-OCT3 Km = 47 microM [9]
References
1 Organic cation transporters: physiology, toxicology and special focus on ethidium as a novel substrate. Curr Drug Metab. 2009 Jul;10(6):617-31.
2 Interaction of organic cation transporter 3 (SLC22A3) and amphetamine. J Neurochem. 2010 Jul;114(1):142-9.
3 Influx Transport of Cationic Drug at the Blood-Retinal Barrier: Impact on the Retinal Delivery of Neuroprotectants. Biol Pharm Bull. 2017;40(8):1139-1145.
4 Multiple SLC and ABC Transporters Contribute to the Placental Transfer of Entecavir. Drug Metab Dispos. 2017 Mar;45(3):269-278.
5 Differential pharmacological in vitro properties of organic cation transporters and regional distribution in rat brain. Neuropharmacology. 2006 Jun;50(8):941-52.
6 Expression of organic cation transporters OCT1 (SLC22A1) and OCT3 (SLC22A3) is affected by genetic factors and cholestasis in human liver. Hepatology. 2009 Oct;50(4):1227-40.
7 Organic cation transporter 3 (Slc22a3) is implicated in salt-intake regulation. J Neurosci. 2004 Mar 17;24(11):2846-51.
8 Drug specificity and intestinal membrane localization of human organic cation transporters (OCT). Biochem Pharmacol. 2005 Dec 5;70(12):1851-60.
9 Structure, function, and regional distribution of the organic cation transporter OCT3 in the kidney. Am J Physiol Renal Physiol. 2000 Sep;279(3):F449-58.
10 Selective substrates for non-neuronal monoamine transporters. Mol Pharmacol. 1999 Jul;56(1):1-10.
11 Molecular identification of the corticosterone-sensitive extraneuronal catecholamine transporter. Nat Neurosci. 1998 Sep;1(5):349-51.

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