There are two common methods for peptide sequence analysis: database search and de novo sequencing. Database searches identify peptide sequences by comparing them in known databases. However, due to incomplete databases for some species, many new or bioactive peptides cannot be matched. De novo peptide sequencing addresses this issue by using tandem mass spectrometry (MS/MS) to determine the amino acid sequence of a peptide without a sequence database. This method allows for the analysis of new and un......
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