Enrichment
Enrichment — The process of increasing the concentration of a target molecule relative to other components in a sample, used in phosphopeptide and glycopeptide analysis.
What Is Peptide Enrichment?
Enrichment is the selective concentration of target peptides from a complex mixture, increasing their relative abundance for detection. In proteomics, enrichment strategies are essential for detecting low-abundance peptides (e.g., phosphopeptides, glycopeptides) that would otherwise be masked by abundant species.
Enrichment Methods
- TiO2/IMAC: Selective capture of phosphopeptides via phosphate-metal affinity
- Lectin affinity: Enrichment of glycopeptides using carbohydrate-binding lectins
- Immunoaffinity: Anti-peptide antibodies capture specific targets from plasma
- SISCAPA: Stable Isotope Standards and Capture by Anti-Peptide Antibodies for clinical biomarker quantification
Frequently Asked Questions
What is Enrichment?
The process of increasing the concentration of a target molecule relative to other components in a sample, used in phosphopeptide and glycopeptide analysis.
Why is Enrichment important in peptide research?
Enrichment is a fundamental concept in laboratory as it relates to peptide science. It directly influences experimental design, compound characterization, and the reliability of research outcomes across biochemistry and molecular biology disciplines.