Related Experiment Video
Updated: Jun 18, 2026
14:34
A Bilingual Computational Workflow for Identifying Potential PLK1 Inhibitors in American Sign Language and English
Published on: April 3, 2026
Predicting ligand interactions with ABC transporters in ADME.
Michael A Demel1, O Krämer, Peter Ettmayer
1University of Vienna, Department of Medicinal Chemistry, Emerging Field Pharmacoinformatics, Althanstrasse 14, AT-1090 Vienna.
Chemistry & Biodiversity
|November 26, 2009
Summary
This review covers computational methods for predicting drug transporter substrates, focusing on ABC transporters like P-glycoprotein. While models show promise, interpreting their chemical implications for drug design remains challenging.
Area of Science:
- Biochemistry
- Pharmacology
- Computational Chemistry
Background:
- ATP-binding cassette (ABC) transporters, including ABCB1, ABCC1, and ABCG2, are crucial for multi-drug resistance (MDR) in cancer.
- These transporters significantly influence drug pharmacokinetics, affecting bioavailability, distribution, elimination, and blood-brain barrier penetration.
Purpose of the Study:
- To provide a comprehensive overview of computational methods used to predict whether drug compounds are substrates for ABC transporters.
- To discuss the strengths and limitations of current ligand-based and structure-based modeling approaches.
Main Methods:
- Review of ligand-based computational methods, including rule-based systems and machine learning algorithms.
- Discussion of emerging structure-based modeling techniques, such as homology modeling and analysis of X-ray crystallographic data.
Main Results:
- Various computational models demonstrate high predictive performance for ABC transporter substrate identification.
- Interpretation of complex models for direct application in medicinal chemistry is often difficult.
Conclusions:
- Computational prediction of ABC transporter substrates is advancing, with both ligand-based and structure-based methods showing potential.
- Further development is needed to enhance the interpretability of these models for practical drug design and development.
Related Concept Videos
01:31ABC Transporters: Exporter
ATP-binding cassette or ABC transporter is the largest superfamily of integral membrane proteins. The transporters have transmembrane-binding domains (TMDs) and nucleotide-binding domains (NBDs). The TMDs are specific to their substrates, whereas the NBDs are similar to engines that complete ATP hydrolysis to complete the substrate transport. They can be full transporters consisting of two TMDs and NBDs, half transporters with one TMD and NBD, while some encoded with a single TMD or NBD are...
01:27ABC Transporters: Importer
ATP-binding cassette or ABC transporters are a class of ATP-driven pumps that hydrolyze ATP to move solutes across the membrane. They can be grouped into importers and exporters. While exporters are present in all domains of life, importers exist only in bacteria and some plants.
In bacteria, based on the number of transmembrane helices and the chemical nature of their substrates, the ABC importers can be divided into three types:
In bacteria, based on the number of transmembrane helices and the chemical nature of their substrates, the ABC importers can be divided into three types:
01:07Physiological Pharmacokinetic Models: Incorporating Hepatic Transporter-Mediated Clearance
Drug transporters are critical in drug absorption, distribution, and excretion processes. They should be included in physiological-based pharmacokinetic (PBPK) models, which help predict human drug disposition. However, predicting this is challenging during drug development, especially when liver transport is involved. However, with a realistic representation of body transport processes, an accurate model may be possible.
A recent model describes pravastatin's hepatobiliary excretion, mediated...
A recent model describes pravastatin's hepatobiliary excretion, mediated...
01:14Hepatic Drug Clearance: Role of Transporters
In the liver and bile canaliculi, influx and efflux transporters modification can influence intrinsic clearance. Transporters play a significant role in moving drugs within liver cells. Elaborate models, such as the Biopharmaceutical Classification System (BCS), are essential to relate transporters to drug disposition. This system categorizes drugs into four classes based on solubility and permeability, providing insights into elimination routes and the effects of transporters following oral...
01:06Carrier-Mediated Transport
Carrier-mediated transport is a pivotal process in drug absorption, particularly for lipid-insoluble drugs, and encompasses facilitated diffusion and active transport. Facilitated diffusion allows drugs to move along their concentration gradient without energy expenditure, while active transport utilizes ATP to drive drug movement against this gradient.
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
01:19Drug Absorption Mechanism: Carrier-Mediated Membrane Transport
Certain large, lipid-insoluble drug molecules that resemble amino acids, peptides, or glucose, require specialized carrier proteins to facilitate their diffusion across cell membranes. This transport can occur through either facilitated diffusion, which does not require energy input, or active transport, which does require energy input.
Facilitated diffusion is a passive process that utilizes human Solute Carrier (SLC) transporters. These transporters bind to the drug, undergo structural...
Facilitated diffusion is a passive process that utilizes human Solute Carrier (SLC) transporters. These transporters bind to the drug, undergo structural...