MSIPepPeptides identified in MALDI mass spectrometry imaging
A curated, citable collection of peptides reported in MALDI-MSI studies. Each entry has its measured and calculated m/z, the parent protein, the tissue and species, and the source publication.
685observations
544peptides
286proteins
13publications
5species
Annotate a peak list →
Paste m/z values from your imaging data and match them against every peptide, for [M+H]+, [M+Na]+ and [M+K]+, within a ppm tolerance you choose.
Browse and filter →
Filter by species, tissue and publication, sort by mass error, and download any result as TSV, CSV or JSON.
Use the API →
A free REST API with JSON responses for scripts, pipelines and other databases.
Tissues
Breast (217) · Brain (183) · Lung (150) · Pancreas (69) · Tumour (site not stated) (44) · Prostate (22)
Every entry is checked automatically: the theoretical m/z is recalculated from the sequence and modifications, and the measured value is compared against it. Entries still being checked by a curator are marked Needs review.