A unique peptide is defined as a peptide, irrespective of its length, that exists only in one protein of a proteome of interest, despite the fact that this peptide may appear more than once in the same protein.
中譯：不論其長度如何，unique peptide 僅在我們所感興趣的蛋白質組中的某蛋白質出現，即使這段 peptide（的序列）實際上可能出現在某蛋白質中出現許多次。
