Quetzal: Comprehensive Peptide Fragmentation Annotation and Visualization.

ABSTRACT: Proteomics data-dependent acquisition data sets collected with high-resolution mass-spectrometry (MS) can achieve very high-quality results, but nearly every analysis yields results that are thresholded at some accepted false discovery rate, meaning that a substantial number of results are incorrect. For study conclusions that rely on a small number of peptide-spectrum matches being correct, it is thus important to examine at least some crucial spectra to ensure that they are not one of the incorrect identifications. We present Quetzal, a peptide fragment ion spectrum annotation tool to assist researchers in annotating and examining such spectra to ensure that they correctly support study conclusions. We describe how Quetzal annotates spectra using the new Human Proteome Organization (HUPO

SUBMITTER: Deutsch EW 

PROVIDER: S-EPMC12660040 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature