Functional Assay
Functional Assay — An experiment that measures the biological activity of a peptide rather than just its binding, such as cell proliferation, signal transduction, or gene expression assays.
What Is a Functional Assay?
A functional assay measures the biological activity (function) of a peptide in a cellular or biochemical system, as opposed to binding assays that only measure physical interaction. Functional assays confirm that peptide binding translates to a biological response and are required for potency determination in QC and clinical development.
Types
- cAMP: GPCR activation readout for Gs/Gi-coupled receptors
- Ca²⁺ flux: Gq-coupled receptor activation measured by fluorescent calcium indicators
- Reporter gene: Luciferase/GFP under signal-responsive promoter
- Proliferation: MTT/MTS/CellTiter-Glo for growth factor peptide activity
Frequently Asked Questions
What is Functional Assay?
An experiment that measures the biological activity of a peptide rather than just its binding, such as cell proliferation, signal transduction, or gene expression assays.
Why is Functional Assay important in peptide research?
Functional Assay is a fundamental concept in analytical 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.
Authority Sources
- Functional Assay on Wikipedia
- Search Functional Assay on PubChem (NIH)
- Research articles on ScienceDirect