PEAKS(software)

PEAKS is a popular tandem mass spectrometry software designed for peptide sequencing and protein identification. Other than being used for search engine protein identification (Protein ID), it is one of the earliest adaptors for de novo sequencing (both automated and manual) and peptide sequence tag  based searching. (SPIDER).In short, de novo sequencing is peptide sequencing performed without prior knowledge of the amino acid sequence.[1]  The PEAKS website describes this as "the ability to provide the sequence of a peptide without the aid of a protein sequence database..." [2].
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