In tandem mass spectrometry,the second mass spectrometer
A) determines the nuclear spin of the atoms.
B) determines the mass of peptide subfragments.
C) uses bioinformatics to compare the masses of the peptides.
D) uses electrospray ionization to select peptide fragments.

Question

Quizplus · Accepted Answer

In tandem mass spectrometry, the second mass spectrometer is used to determine the mass of peptide subfragments by analyzing the fragmentation pattern of the peptides produced in the first mass spectrometer. This allows for the identification of amino acid sequences and helps in the determination of the structure and function of proteins. Options A, C, and D are not accurate descriptions of the role of the second mass spectrometer in tandem mass spectrometry.

In Tandem Mass Spectrometry,the Second Mass Spectrometer