GL1X · GenesisL1 explorer

Proteomics

Masses, fragments & isotopes

Free peptide mass calculator: monoisotopic and average mass, m/z by charge, b/y, c/z and a fragment ions and exact isotope patterns, with modifications and formulas.

Compute a peptide's masses, fragment ions and isotope pattern, with modifications.

  • Monoisotopic and average masses and the formula
  • m/z at charges 1 to 4
  • b/y, c/z and a fragment ions
  • Exact isotope patterns of peptides, formulas and averagine proteins

Isotope patterns agree with IsoSpecPy 2.5.0 within 10⁻⁹.

Proteomics · free, no account; also through the API and the MCP server.

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