Related Experiment Video
Updated: May 28, 2025
An Integrated Raman Spectroscopy and Mass Spectrometry Platform to Study Single-Cell Drug Uptake, Metabolism, and Effects
Published on: January 9, 2020
Determination of protein transporter function using Raman spectroscopy
Dominic Gilchrist1,2, Meez Islam1, Muhammad Safwan Akram1,2
1School of Health and Life Sciences, Teesside University, Campus Heart, Middlesbrough TS1 3BX, UK.
Researchers developed a new method using Raman spectroscopy to study transporter proteins. This technique detects alkyne-labelled substrates, offering a faster, equipment-light alternative to radioactive assays for analyzing transporter function.
Area of Science:
- Biochemistry
- Molecular Biology
- Spectroscopy
Background:
- Transporter proteins are crucial for cellular metabolite exchange.
- Traditional methods for characterizing transporter function rely on radiolabeled substrates, which are time-consuming and require specialized equipment.
Purpose of the Study:
- To develop and validate an alternative method for assessing transporter function.
- To utilize Raman spectroscopy for detecting alkyne-labeled substrates, bypassing the need for radioactivity.
Main Methods:
- Employed Raman spectroscopy to detect the uptake of alkyne-labeled substrates.
- Utilized a candidate nucleotide transporter (ThNTT4) expressed in *Escherichia coli* as a model system.
- Investigated the transport of alkyne-labeled ATP molecules (N6pATP).
Main Results:
- Successfully detected the transport of alkyne-labeled ATP (N6pATP) by ThNTT4 using Raman spectroscopy.
- Demonstrated time-dependent ATP transport, confirming the method's ability to quantify uptake rates.
- Established substrate specificity, showing transport of purine but not pyrimidine substrates.
Conclusions:
- Raman spectroscopy provides an effective, non-radioactive alternative for analyzing transporter function.
- This method is applicable to various transporters, provided their substrates can be alkyne-tagged.
- The technique offers a faster and more accessible approach compared to traditional radioactive assays.
More Related Videos
11:44Surface Enhanced Raman Spectroscopy Detection of Biomolecules Using EBL Fabricated Nanostructured Substrates
Published on: March 20, 2015
10:03Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy
Published on: June 27, 2014
Related Concept Videos
01:26Raman Spectroscopy Instrumentation: Overview
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
01:20Raman Spectroscopy: Overview
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
01:22Protein-Drug Binding: Determination Methods
Indirect methods involve isolating the bound drug from its free form in biological samples such as blood, serum, or plasma. These techniques aim to measure the percentage of drugs bound to proteins. Equilibrium dialysis is a commonly used method where the free drug concentration at equilibrium is measured by separating the bound...
01:19Protein Dynamics in Living Cells
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...