Complement System
Complement System — A group of plasma proteins that work together as part of innate immunity, with several components being targets for peptide-based immunomodulation research.
What Is the Complement System?
The complement system is a cascade of >30 plasma proteins that amplifies immune responses through opsonization, inflammation, and cell lysis. Several complement components are processed into bioactive peptides: C3a, C4a, and C5a are anaphylatoxins (pro-inflammatory peptides), and C5a is a potent chemoattractant studied as a drug target in inflammatory diseases.
Peptide Connections
- C5a: 74 residue pro-inflammatory peptide. C5aR1 antagonists (PMX53, avacopan) in clinical development
- Compstatin: Cyclic 13-mer peptide inhibiting C3 activation. Pegcetacoplan (APL-2) FDA-approved for PNH
- AMPs: LL-37 modulates complement activation
Frequently Asked Questions
What is Complement System?
A group of plasma proteins that work together as part of innate immunity, with several components being targets for peptide-based immunomodulation research.
Why is Complement System important in peptide research?
Complement System is a fundamental concept in biology 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
- Complement System on Wikipedia
- Search Complement System on PubChem (NIH)
- Research articles on ScienceDirect