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Peptide Identification Using Tandem Mass Spectrometry

Peptide Identification Using Tandem Mass Spectrometry

Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...

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Fast Enzymatic Processing of Proteins for MS Detection with a Flow-through Microreactor

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Published on: April 6, 2016

Miniaturized Protein Digestion Using Acoustic Levitation with Online High Resolution Mass Spectrometry.

Sebastian van Wasen¹, Yi You², Sebastian Beck¹

¹Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, Berlin 12489, Germany.

Analytical Chemistry

|February 16, 2023

Summary

This study introduces acoustic levitation for real-time protein digestion monitoring, achieving overnight digestion results in just 30 minutes. This green analytical chemistry method reduces solvent and analyte use.

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Analyzing Protein Architectures and Protein-Ligand Complexes by Integrative Structural Mass Spectrometry

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Published on: October 15, 2018

Area of Science:

Analytical Chemistry
Biochemistry
Physical Chemistry

Background:

Traditional enzymatic protein digestion methods are time-consuming and require significant reagent volumes.
Real-time monitoring of biochemical reactions, like protein digestion, is challenging with conventional techniques.
Developing efficient and sustainable analytical methods is crucial for modern chemical research.

Purpose of the Study:

To develop a novel, real-time method for monitoring enzymatic protein digestion.
To investigate the application of acoustic levitation as a microreactor for biochemical reactions.
To assess the efficiency and green chemistry aspects of the proposed methodology.

Main Methods:

Utilizing acoustically levitated droplets as a wall-free microreactor.
Employing mid-infrared laser evaporation and secondary electrospray ionization for analysis.
Performing time-resolved interrogation of droplets during trypsin digestion.

Main Results:

Achieved protein sequence coverages comparable to overnight digestions within 30 minutes.
Demonstrated real-time insights into enzymatic digestion kinetics.
Significantly reduced consumption of solvent, analyte, and trypsin.

Conclusions:

Acoustic levitation provides an effective platform for real-time monitoring of chemical reactions.
The developed method offers a green analytical chemistry alternative to traditional batch reactions.
This approach enables rapid and efficient enzymatic protein digestion with minimal resource usage.