Fragmentation Pattern
Fragmentation Pattern — The characteristic set of product ions generated when a peptide is broken apart in a mass spectrometer, used like a fingerprint for structural identification.
What Is a Fragmentation Pattern?
A fragmentation pattern is the characteristic set of fragment ions produced when a peptide is dissociated in MS/MS. Peptide bond cleavage generates b-ions (N-terminal fragments) and y-ions (C-terminal fragments). The mass differences between consecutive b- or y-ions correspond to individual amino acid residue masses, enabling sequence determination.
Ion Series
- b-ions: Fragments retaining the N-terminus. b1, b2, b3...
- y-ions: Fragments retaining the C-terminus. y1, y2, y3...
- Immonium: Single amino acid internal ions. Diagnostic for specific residues
Frequently Asked Questions
What is Fragmentation Pattern?
The characteristic set of product ions generated when a peptide is broken apart in a mass spectrometer, used like a fingerprint for structural identification.
Why is Fragmentation Pattern important in peptide research?
Fragmentation Pattern is a fundamental concept in analytical as it relates to peptide science. It directly influences experimental design, compound characterization, and the reliability of research outcomes across biochemistry and molecular biology disciplines.
Authority Sources
- Fragmentation Pattern on Wikipedia
- Search Fragmentation Pattern on PubChem (NIH)
- Research articles on ScienceDirect