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Found an error? Have a suggestion for the database? Questions about the tools? We'd love to hear from you.

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Errors
Incorrect MW, wrong sequence, outdated info — we want to know.
Suggestions
Suggest a peptide for the database or a topic for a new article.
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Tool issues
Calculator giving unexpected results? Let us know the sequence and expected output.
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Collaboration
Educational partnerships, content contributions, or academic collaboration.
⚠️ We do not provide medical advice. Please do not ask about dosages, treatments, or personal health situations.