internal fragment

https://doi.org/10.1351/goldbook.12435
Fragment ion of a peptide ion precursor formed by a double backbone cleavage that contains neither the original \(\ce{C}\)- or \(\ce{N}\)-terminal residues. Typically a combination of b- and y-type cleavages or occasionally an a- and y-type combination.
Source:
PAC, 2013, 85, 1515. (Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)) on page 1550 [Terms] [Paper]
Citation: 'internal fragment' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.12435 RIS BibTex EndNote
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