Protter is an open-source app for visualizing proteoforms and integrating sequence features with experimental proteomic data.

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For proteomics researchers and protein biologists, Protter helps relate protein sequence annotations to experimental evidence in a clear topology diagram. Enter a UniProt accession or protein sequence, or load supported proteomics result files to map identified peptides and post-translational modifications onto proteins. Protter combines these data with curated or predicted features, such as transmembrane regions, and lets you adjust the topology and visual styling interactively. Use it to inspect individual proteins, compare evidence across datasets, or prepare publication-quality diagrams; visualizations can be exported, including for multiple proteins.

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