Stable Isotope-Labeled Peptide Standards for Quantitative Proteomics
# Stable Isotope-Labeled Peptide Standards for Quantitative Proteomics ## Introduction to Stable Isotope-Labeled Peptides Stable isotope-labeled peptide standards have become indispensable tools in modern quantitative proteomics. These synthetic peptides, chemically identical to their endogenous counterparts but containing stable isotopes (such as 13C, 15N, or 2H), enable accurate and precise measurement of protein abundance in complex…